nervous system test

Which one of the following is the correct sequence of events that follows a threshold potential: 1. the membrane becomes depolarized 2. sodium channels open and sodium ions diffuse inward 3. the membrane becomes repolarized 4. potassium channels open and potassium ions diffuse outward while sodium is actively transported out of the cell A) 2, 1, 4, 3 B) 3, 2, 4, 1 C) 2, 1, 3, 4 D) 4, 1, 3, 2 E) 1, 2, 4, 3

2, 1, 4, 3

Taste buds are replaced about every ______. a. 7 to 10 days b. 7 to 10 weeks c. 7 to 10 months d. 7 to 10 years

7 to 10 days

Sally has a brain injury; she knows what she wants to say but canʹt vocalize the words. The part of her brain that deals with the ability to speak is the: A) central sulcus B) Brocaʹs area C) primary motor area D) longitudinal fissure E) gyrus

Brocaʹs area

White matters refers to myelinated fibers in the: A) SNS B) PNS C) ANS D) CNS E) both ANS and SNS

CNS

Which of the following is true of myopia? a. The myopic eye can see far objects clearly. b. The eyeball is too short. c. Light rays focus behind the retina. d. Concave lenses help correct this condition.

Concave lenses help correct this condition.

Otoliths activate which receptors? a. Spiral organs b. Maculae c. Cristae ampullares d. Mitral cells

Cristae ampullares

Vestibular nystagmus occurs when which receptors are stimulated? a. Spiral organs b. Maculae c. Cristae ampullares d. Cones

Cristae ampullares

Which of the following sensory receptors is a touch receptor: A) Golgi tendon organ B) Pacinian corpuscle C) Meissnerʹs corpuscle D) muscle spindles E) naked nerve endings

Meissnerʹs corpuscle

The pharyngotympanic tube connects the throat with which part of the ear? a. External ear b. Middle ear c. Internal ear d. Cochlear duct

Middle ear

Which of these cells are not a type of neuroglia found in the CNS: A) Schwann cells B) oligodendrocytes C) ependymal cells D) astrocytes E) microglia

Schwann cells

Which of the following is not a taste bud classification? a. Sweet b. Sour c. Spicy d. Umami

Spicy

Vibrations of the cochlear duct cause the cilia of the hair cells to bend against which membrane? a. Tympanic b. Vestibular c. Tectorial d. Basilar

Tectorial

Which of the following statements is true of vision? a. The cornea helps converge light rays onto the retina. b. The lens of the eye will become more convex when focusing on far objects. c. The light entering the eye is focused onto the optic disc. d. The iris helps to focus the lens.

The cornea helps converge light rays onto the retina.

Which of the following occurs when looking at near objects? a. The lens flattens b. The pupils constrict c. The eyeballs diverge d. The ciliary muscle relaxes

The pupils constrict

Which one of the following best describes the waxy-appearing material called myelin: A) a mass of white lipid material that surrounds the dendrites of a neuron B) an outer membrane on a neuroglial cell C) a mass of white lipid material that insulates the axon of a neuron D) a lipid-protein (lipoprotein) cell membrane on the outside of axons E) a mass of white lipid material that surrounds the cell body of a neuron

a mass of white lipid material that insulates the axon of a neuron

The substance that is released at axonal endings to propagate a nervous impulse is called: A) an ion B) an action potential C) the sodium-potassium pump D) a neurotransmitter E) nerve glue

a neurotransmitter

The subarachnoid space lies directly between the: A) arachnoid mater and cerebellum B) arachnoid mater and cerebrum C) skull and arachnoid mater D) arachnoid mater and dura mater E) arachnoid mater and pia mater

arachnoid mater and pia mater

A neuron with a cell body located in the CNS whose primary function is connecting other neurons is called a(n): A) efferent neuron B) glial cell C) afferent neuron D) satellite cell E) association neuron

association neuron

The sympathetic and parasympathetic nervous systems are subdivisions of the: A) autonomic nervous system B) voluntary nervous system C) somatic nervous system D) central nervous system E) peripheral nervous system

autonomic nervous system

The Schwann cell forms a myelin sheath around the: A) nucleus B) cell body C) axon D) nodes of Ranvier E) dendrites

axon

The three sets of color receptors within the retina are sensitive to wavelengths of visible light that are: A) blue, green, and red B) green, yellow, and purple C) orange, green, and purple D) red, blue, and yellow E) red, green, and yellow

blue, green, and red

Which of the nerve plexuses serves the shoulder and arm: A) sacral B) cervical C) phrenic D) lumbar E) brachial

brachial

The term central nervous system refers to the: A) spinal cord and spinal nerves B) autonomic and peripheral nervous systems C) brain, spinal cord, and cranial nerves D) brain and cranial nerves E) brain and spinal cord

brain and spinal cord

The midbrain, pons, and medulla oblongata are housed in the: A) diencephalon B) brain stem C) pineal gland D) hypothalamus E) cerebellum

brain stem

Loss of muscle coordination results from damage to the: A) hypothalamus B) cerebrum C) midbrain D) cerebellum E) thalamus

cerebellum

Which of the following is a traumatic brain injury: A) aphasia B) cerebral edema C) cerebrovascular accident (CVA) D) Parkinsonʹs disease E) Alzheimerʹs disease

cerebral edema

Which one of the following is the correct sequence of nerves that exit the spinal cord, going from superior to inferior: A) cervical spinal nerves, lumbar spinal nerves, thoracic spinal nerves, sacral spinal nerves B) cervical spinal nerves, thoracic spinal nerves, sacral spinal nerves, lumbar spinal nerves C) thoracic spinal nerves, cervical spinal nerves, sacral spinal nerves, lumbar spinal nerves D) thoracic spinal nerves, cervical spinal nerves, lumbar spinal nerves, sacral spinal nerves E) cervical spinal nerves, thoracic spinal nerves, lumbar spinal nerves, sacral spinal nerves

cervical spinal nerves, thoracic spinal nerves, lumbar spinal nerves, sacral spinal nerves

The receptors for taste and smell are classified as ________. a. mechanoreceptors b. chemoceptors c. nociceptors d. proprioceptors

chemoceptors

The middle coat of the eyeball that contains pigment which prevents light from scattering in the eyeball is the: A) sclera B) pupil C) retina D) choroid E) cornea

choroid

Blood vessels of the eye are found in the ________. a. cornea b. choroid coat c. retina d. lens

choroid coat

All are extrinsic muscles of the eye except: a. lateral rectus. b. medial rectus. c. superior oblique. d. ciliary muscle.

ciliary muscle

The spiral organs of Corti are found in the _______. a. vestibule b. semicircular canals c. utricle d. cochlea

cochlea

The sciatic nerve is the largest nerve in the body resulting from a combination of which two nerves: A) pudendal and femoral nerves B) pudendal and common peroneal nerves C) pudendal and tibial nerves D) common fibular and tibial nerves E) femoral and tibial nerves

common fibular and tibial nerves

The highly contagious bacterial infection known as ʺpinkeyeʺ is caused by bacterial or viral irritation of the: A) cornea B) conjunctiva C) retina D) choroid E) sclera

conjunctiva

The maculae of the ear ________. a. respond to dynamic equilibrium b. contain hair cells c. are located in the semicircular canals d. are encased in a gelatinous mass called a cupula

contain hair cells

The fibrous layer of the eye contains the _______. a. cornea b. choroid coat c. retina d. lens

cornea

The transparent central anterior portion of the sclera through which light enters the eye is called the: A) cornea B) choroid C) pupil D) iris E) retina

cornea

Which one of the following correctly lists the order of the parts through which light passes as it enters the eye: A) vitreous humor, lens, aqueous humor, cornea B) lens, aqueous humor, cornea, vitreous humor C) cornea, aqueous humor, lens, vitreous humor D) cornea, lens, aqueous humor, vitreous humor E) aqueous humor, cornea, lens, vitreous humor

cornea, aqueous humor, lens, vitreous humor

Cerebrospinal fluid circulates through all of the following except: A) corpus callosum B) lateral ventricles C) fourth ventricle D) cerebral aqueduct E) subarachnoid space

corpus callosum

Which cranial nerve is responsible for moving the eye laterally: A) cranial nerve VIII (vestibulocochlear) B) cranial nerve III (oculomotor) C) cranial nerve II (optic) D) cranial nerve IV (trochlear) E) cranial nerve VI (abducens)

cranial nerve IV (trochlear)

The nerve that contains sensory fibers that are involved in hearing is: A) cranial nerve VIII B) cranial nerve II C) cranial nerve IX D) cranial nerve III E) cranial nerve V

cranial nerve VIII

Sensorineural deafness results from all of the following except: a. loss of hair cells. b. damage to the cochlear nerve. c. damage to the ossicles. d. damage to the auditory cortex.

damage to the ossicles.

Which of the following effects is characteristic of the parasympathetic nervous system: A) increases metabolic rate B) stimulates sweat glands to produce perspiration C) decreases heart rate D) decreases urine output E) decreases activity of the digestive system

decreases heart rate

Inflammation of the conjunctiva involves which of the following: A) portion of the eye that contains the optic nerve B) extrinsic eye muscles C) circular band surrounding the pupil D) delicate membrane lining the eyelids and covering the front of the eyeball E) glands that produce tears

delicate membrane lining the eyelids and covering the front of the eyeball

The neuron processes that normally receive incoming stimuli are called: A) Schwann cells B) dendrites C) neurolemmas D) satellite cells E) axons

dendrites

Which one of the following statements about aging is most accurate: A) the brain reaches its maximum weight around the seventh decade of life B) synaptic connections are too fixed to permit a great deal of learning after the age of 35 C) despite some neuronal loss, an unlimited number of neural pathways are available and ready to be developed; therefore, additional learning can occur throughout life D) increased efficiency of the sympathetic nervous system enhances the ability to learn E) learning throughout the adult and aging years is supported primarily by glial proliferation

despite some neuronal loss, an unlimited number of neural pathways are available and ready to be developed; therefore, additional learning can occur throughout life

The sense of smell can ____________. a. elicit an emotional response b. exhibit adaptation c. trigger a fight-or-flight response d. do all of the above

do all of the above

Which one of the following represents the correct sequence from outermost to innermost layers of the meninges: A) dura mater, arachnoid mater, pia mater B) pia mater, dura mater, arachnoid mater C) arachnoid mater, dura mater, pia mater D) dura mater, pia mater, arachnoid mater E) pia mater, arachnoid mater, dura mater

dura mater, arachnoid mater, pia mater

Muscles and glands are: A) effectors B) part of the central nervous system C) part of the peripheral nervous system D) receptors E) myelinated

effectors

Which one of the following is the correct sequence in connective tissue sheaths, going from outermost to innermost layer: A) perineurium, endoneurium, epineurium B) epineurium, perineurium, endoneurium C) perineurium, epineurium, endoneurium D) epineurium, endoneurium, perineurium E) endoneurium, epineurium, perineurium

epineurium, perineurium, endoneurium

Which one of the following nerves serves the anterior tongue: A) cochlear B) vestibular C) vagus D) facial E) glossopharyngeal

facial

Bipolar neurons are commonly: A) motor neurons B) found in the eye and nose C) more abundant in adults than in children D) called neuroglia E) found in ganglia

found in the eye and nose

The greatest visual acuity is found at the: A) lens B) fovea centralis C) ciliary body D) optic disc E) iris

fovea centralis

Lobe that contains the primary motor area that enables voluntary control of skeletal muscle movements: A) frontal lobe B) occipital lobe C) parietal lobe D) diencephalon E) temporal lobe

frontal lobe

Collections of nerve cell bodies inside the CNS are called: A) nuclei B) ganglia C) nerves D) tracts E) tracts or ganglia

ganglia

The elevated ridges of tissue on the surface of the cerebral hemispheres are known as __________ while the shallow grooves are termed __________. A) sulci; gyri B) tracts; ganglia C) ganglia; gyri D) gyri; sulci E) receptors; effectors

gyri; sulci

Hearing receptors within the spiral organ of Corti are called: A) cone cells B) Corti cells C) hair cells D) rod cells E) ceruminous cells

hair cells

In contrast to the somatic nervous system, the autonomic nervous system: A) stimulates its effector cells B) has centers in the brain and spinal cord C) has both afferent and efferent fibers D) has two motor neurons E) has two afferent neurons

has two motor neurons

Control of temperature, endocrine activity, metabolism, and thirst are functions associated with the: A) thalamus B) cerebellum C) hypothalamus D) medulla oblongata E) cerebrum

hypothalamus

The pituitary gland is most closely associated with the: A) hypothalamus B) medulla oblongata C) pineal gland D) midbrain E) thalamus

hypothalamus

Sympathetic nervous system stimulation causes: A) increased blood glucose, decreased GI peristalsis, and increased heart rate and blood pressure B) decreased blood glucose, increased GI peristalsis, and decreased heart rate and blood pressure C) increased blood glucose, increased GI peristalsis, and decreased heart rate and blood pressure D) decreased blood glucose, decreased GI peristalsis, and decreased heart rate and blood pressure E) decreased blood glucose, increased GI peristalsis, and increased heart rate and blood pressure

increased blood glucose, decreased GI peristalsis, and increased heart rate and blood pressure

The auditory ossicle called the ʺanvilʺ is also called the: A) incus B) stapes C) malleus D) bony labyrinth E) cochlea

incus

Equilibrium receptors are located in the: A) tympanic membrane B) inner ear C) external ear D) middle ear E) ossicles

inner ear

The pigmented portion of the eye that has a rounded opening through which light passes is the: A) cornea B) sclera C) iris D) lens E) retina

iris

The ability to respond to a stimulus is termed: A) polarized B) depolarized C) irritability D) all-or-none response E) conductivity

irritability

The cerebrospinal fluid: A) enters the four ventricles after filling and circulating through the subarachnoid space B) is secreted by the arachnoid villi C) is identical in composition to whole blood D) is secreted mostly by the ependymal cells lining the brain ventricles E) is continually formed mostly by the choroid plexuses

is continually formed mostly by the choroid plexuses

An action potential: A) involves the outflux of negative ions to depolarize the membrane B) involves the influx of negative ions to depolarize the membrane C) is initiated by potassium ion movements D) involves the outflux of positive ions to depolarize the membrane E) is essential for nerve impulse propagation

is essential for nerve impulse propagation

Which one of the following describes saltatory conduction: A) is faster than conduction on an unmyelinated fiber B) occurs only if nodes of Ranvier are lacking C) occurs only if the myelin sheath is continuous D) is slower than conduction on an unmyelinated fiber E) occurs only in the absence of axon hillocks

is faster than conduction on an unmyelinated fiber

Which one of the following is NOT true of color blindness: A) lack of red or green receptors is the most common type B) it is sex-linked, inherited homeostatic imbalance C) it is caused by a defect in genes on the X (female) sex chromosome D) it occurs most often in women E) it results from lack of cones

it occurs most often in women

The gland that produces tears in the eye is called the: A) ceruminous gland B) ciliary gland C) tarsal gland D) lacrimal gland E) sebaceous gland

lacrimal gland

Tears drain directly from the _______ into the nasolacrimal duct. a. lacrimal gland b. lacrimal punta c. lacrimal sac d. lacrimal canaliculi

lacrimal sac

Stimulation of sour receptors occurs in response to: A) sugar B) salt C) beef steak D) saccharine E) lemons

lemons

What structure of the eye focuses light on the retina: A) optic chiasma B) lens C) choroid D) sclera E) iris

lens

Presbyopia is the inability of the ________. a. lens to accommodate b. pupils to constrict c. cornea to refract light d. cones to depolarize

lens to accommodate

Which of the nerves plexuses originates from ventral rami - : A) brachial B) lumbar C) sacral D) spinal E) cervical

lumbar

The pathway of vibrations through the ossicles from the tympanic membrane, or eardrum, to the oval window is: A) incus, malleus, stapes B) stapes, incus, malleus C) malleus, stapes, incus D) malleus, incus, stapes E) stapes, malleus, incus

malleus, incus, stapes

Receptors stimulated by the physical forces that cause movement of fluid or vibration within the body are: A) proprioceptors B) thermoreceptors C) chemoreceptors D) gustatory receptors E) mechanoreceptors

mechanoreceptors

1) The vital centers for the control of visceral activities such as heart rate, breathing, blood pressure, swallowing, and vomiting are located in the: A) hypothalamus B) pons C) cerebrum D) midbrain E) medulla oblongata

medulla oblongata

The blood-brain barrier is effective against the passage of: A) nutrients such as glucose B) metabolic waste such as urea C) water D) anesthetics E) alcohol

metabolic waste such as urea

The three major parts of the brain stem are the: A) basal nuclei, pineal body, and choroid plexus B) dura mater, arachnoid mater, and pia mater C) midbrain, pons, and medulla oblongata D) thalamus, epithalamus, and hypothalamus E) cerebrum, cerebellum, and diencephalon

midbrain, pons, and medulla oblongata

An ear infection following an illness such as a cold has passed from the throat through the auditory tube to the: A) middle ear B) semicircular canals C) inner ear D) eardrum E) outer ear

middle ear

Impulse conduction is fastest in neurons that are: A) sensory B) unmyelinated C) cerebral D) motor E) myelinated

myelinated

The inability to see distant objects is termed ʺnearsightedʺ or: A) emmetropia B) presbyopia C) myopia D) hyperopia E) astigmatism

myopia

The area where the optic nerve leaves the eye is called the ________. a. fovea centralis b. macula lutea c. optic disc d. fundus

optic disc

Sound is transmitted from the tympanic membrane to the internal ear by the __________. a. cochlea b. ossicles c. vestibular membrane d. round window

ossicle

Which one of the following is NOT part of the inner ear? A) semicircular canals B) ossicles C) vestibule D) cochlea E) membranous labyrinth

ossicles

The stapes connects with the internal ear via the ___________. a. basilar membrane b. tympanic membrane c. oval window d. round window

oval window

The effects of the sympathetic nervous system are essentially opposite of the: A) motor division B) parasympathetic nervous system C) sensory division D) central nervous system E) autonomic nervous system

parasympathetic nervous system

The bony labyrinth contains: a. the spiral organs of Corti. b. endolymph. c. perilymph. d. both a and b.

perilymph.

Eyes suddenly exposed to bright light experience: A) photopupillary reflex B) convergence C) accommodation pupillary reflex D) hemianopia E) eyestrain

photopupillary reflex

Immediately after an action potential is propagated, which one of the following ions rapidly diffuses out of the cell into the tissue fluid: A) potassium B) calcium C) sodium D) chloride E) magnesium

potassium

The decreased lens elasticity associated with aging that makes it difficult to focus on near objects is known as: A) myopia B) presbyopia C) strabismus D) hyperopia E) hemianopia

presbyopia

Which one of the following is NOT a primary taste sensation: A) salty B) sweet C) pungent D) sour E) bitter

pungent

Damage to this nerve results in ʺwristdrop,ʺ the inability to extend the hand at the wrist: A) obturator B) radial C) axillary D) phrenic E) femoral

radial

Which of the following is the correct sequence in a typical reflex arc: A) receptor, afferent neuron, efferent neuron, integration center, effector B) effector, efferent neuron, integration center, afferent neuron, receptor C) receptor, afferent neuron, integration center, efferent neuron, effector D) effector, afferent neuron, integration center, efferent neuron, receptor E) receptor, efferent neuron, integration center, afferent neuron, effector

receptor, afferent neuron, integration center, efferent neuron, effector

The diffusion of potassium ions out of a neuron causes it to experience: A) repolarization B) an action potential C) a nerve impulse D) a graded potential E) depolarization

repolarization

The area of the brain stem that plays a role in consciousness and the awake/sleep cycles is the: A) cerebellum B) thalamus C) reticular activating system (RAS) D) pineal gland E) limbic system

reticular activating system (RAS)

Which layer of the eye contains rods and cones: A) iris B) retina C) sclera D) choroid E) optic nerve

retina

The scala tympani extends from the apex of the cochlea to the _________. a. scala media b. scala vestibuli c. basilar membrane d. round window

round window

Spinal nerves exiting the cord from the level of L4 to S4 form the: A) lumbar plexus B) sacral plexus C) femoral plexus D) obturator plexus E) thoracic plexus

sacral plexus

The fibrous outermost tunic seen anteriorily as the ʺwhite of the eyeʺ is the: A) retina B) sclera C) choroid D) cornea E) fovea centralis

sclera

The aqueous humor of the eye is reabsorbed into venous blood through the: A) inferior larimal canal B) pupil C) nasolacrimal duct D) scleral venous sinus (canal of Schlemm) E) ciliary body

scleral venous sinus (canal of Schlemm)

Tarsal glands associated with the edges of the eyelids are considered modified: A) sweat glands B) sebaceous glands C) ceruminous glands D) apocrine glands E) lacrimal glands

sebaceous glands

Dynamic equilibrium receptors are found in the: A) oval window B) cochlea C) semicircular canals D) malleus E) vestibule

semicircular canals

Afferent nerves are called __________, and motor nerves are called __________. A) peripheral nerves; cranial nerves B) sensory nerves; efferent nerves C) cranial nerves; peripheral nerves D) motor nerves; sensory nerves E) mixed nerves; motor nerves

sensory nerves; efferent nerves

Which one of these effectors is NOT directly controlled by the autonomic nervous system: A) smooth muscle B) cardiac muscle C) most glands D) skeletal muscle E) abdominal organs

skeletal muscle

Gustatory hairs are to taste as olfactory hairs are to: A) both hearing and dynamic equilibrium B) dynamic equilibrium C) sight D) hearing E) smell

smell

The function of the olfactory nerve concerns: A) smell B) chewing C) vision D) eye movement E) hearing

smell

An action potential is caused by an influx of these ions into the cell: A) both potassium and sodium B) potassium C) sodium D) magnesium E) calcium

sodium

Hair cells that function as hearing receptors are located within the: A) auditory tube B) oval window C) auricle D) spiral organ of Corti E) ossicles

spiral organ of Corti

Sensorineural deafness occurs when there is damage or degeneration of receptor cells of the: A) spiral organ of Corti or cochlear nerve B) semicircular canals C) spiral organ of Corti D) round window E) ossicles

spiral organ of Corti or cochlear nerve

The congenital condition of ʺcrossed eyesʺ is also known as: A) hemianopia B) hyperopia C) presbyopia D) strabismus E) myopia

strabismus

The gray matter of the spinal cord: A) surrounds the white matter of the spinal cord B) surrounds the central canal C) contains myelinated fiber tracts D) always carries sensory information to the brain E) is made up of the dorsal, lateral, and ventral columns

surrounds the central canal

Preparing the body for the ʺfight-or-flightʺ response during threatening situations is the role of the: A) sympathetic nervous system B) somatic nervous system C) cerebrum D) afferent nervous system E) parasympathetic nervous system

sympathetic nervous system

The gap between two communicating neurons is termed: A) node of Ranvier B) synaptic cleft C) effector D) cell body E) Schwann cell

synaptic cleft

The oily secretions that lubricate the eye are produced by the: A) ceruminous glands B) apocrine glands C) ciliary glands D) lacrimal glands E) tarsal glands

tarsal glands

The olfactory area is found within the: A) occipital lobe B) parietal lobe C) frontal lobe D) temporal lobe E) pyramidal tract

temporal lobe

Cell bodies of the sensory neurons of the spinal nerves are located in: A) the dorsal root ganglia of the spinal cord B) the thalamus C) the hypothalamus D) the ventral root ganglia of the spinal cord E) sympathetic ganglia

the dorsal root ganglia of the spinal cord

The peripheral nervous system consists of: A) the spinal and cranial nerves B) the brain and spinal cord C) spinal nerves only D) cranial nerves only E) the brain only

the spinal and cranial nerves

All of the following statements are true of rods except: a. they are used in dim light. b. they contain a pigment called rhodopsin. c. they are not found in the fovea centralis. d. they are 100 times less sensitive than cones.

they are 100 times less sensitive than cones.

Sympathetic division fibers leave the spinal cord in the: A) thoracolumbar region, and the postganglionic fibers secrete acetylcholine B) craniosacral regions, and the postganglionic fibers secrete norepinephrine C) craniosacral region, and the preganglionic fibers secrete norepinephrine D) craniosacral region, and the postganglionic fibers secrete acetylcholine E) thoracolumbar region, and the postganglionic fibers secrete norepinephrine

thoracolumbar region, and the postganglionic fibers secrete norepinephrine

Sound waves entering the external auditory canal hit the eardrum, also known as the: A) oval window B) ossicles C) tympanic membrane D) pinna E) auricle

tympanic membrane

Which one of the following cranial nerves is NOT involved in either taste or smell: A) vestibular (VIII) B) glossopharyngeal (IX) C) olfactory nerve (I) D) facial nerve (VII) E) vagus (X)

vestibular (VIII)

The portion of the bony labyrinth responsible for static equilibrium is the: A) oval window B) ossicles C) semicircular canals D) vestibule E) cochlea

vestibule

The only special sense that is NOT fully functional at birth is: A) taste B) vision C) hearing D) smell E) touch

vision

The gel-like substance that reinforces the eyeball and prevents it from collapsing inward is the: A) choroid coat B) canal of Schlemm C) aqueous humor D) vitreous humor E) ciliary body

vitreous humor

The sense of taste is carried back to the brain by all of the following cranial nerves except: a. V. b. VII. c. IX. d. X.

x