Exam 4

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cerebrospinal fluid is secreted partly by a mass of blood capillaries called _______ in each ventricle

Choroid plexus

The right and left cerebral hemispheres are connected to each other by a thick C-shaped bundle called the ------

Corpus callosum

As a nurse in a genetic ward, you notice a patient who is unable to close her eyes, even during sleep. She also complains about dry mouth and loss of taste. You immediately suspect damage to cranial nerve.

VII

THe brain has four chambers called the ________ filled with ______fluid

Ventricles, Cerebrospinal

The neuroglia responsible for the blood-brain barrier are the

astrocytes

which of the following senses is/ are initially detected by modified epithial cells rather then neurons

audition, dynamic equilibrium, static equilibrium

A person would look cross-eyed if_________ muscles contracted at once

both medial rectus

Nissl bodies are located in a neuron's ________ and functions in ______

cell body; Protein synthesis

Neural circuits called__________ in the spinal cord produce the rhythmic muscular contractions of walking

central pattern generators

folia are characteristic features of the

cerebellum

the basal nuclei are part of the ______ and have ____ functions

cerebrum; motor

The diestal tapering end of the spinal cord is called the

conus medullaris

the hair root plexus and tactile corpuscles are examples of

cutaneous mechanoreceptors, general senses, simple receptors

The crossing of nerve fiber or tract from the right side of the CNS to the left or vice versa is called?

decussation

Neurons receive incoming signals by way of specialized processes called

dendrites

A lateral extension of the pia mater that helps anchor the spinal cord is the

denticulate ligament

spinal nerves T2 - T12

do not contribute to any plexus

Neurons arise form embryonic

ectoderm

The outermost connective tissue wrapping on a nerve is called the

epineurium

The glial cells that destroy microorganisms in the cns are

microglia

All of the nervous system except the brain and spinal cord is called the

peripheral nervous system

All of the nervous system except the brain and spinal cord is called the________

peripheral nervous system

All of the following are part of the diencephalon except the

pituitary gland

The patient's symptoms (Q.8) could be explained by a stroke in the

pons

The __________ ganglion contains the somas of the neurons that carry sensory signals to the spinal cord

posterior root

the receptor calls for hearing are located in the

spiral organ of corti

The _____ is a tiny bone that vibrates in the oval window and thereby transfers sound vibrations to the inner ear

stapes

Neurotransmitters are found in the

synaptic knob

The apical microvilli of a gustatory cell are called

taste hairs

The cerebrum is separated from the cerebellum by the

tentorium cerebelli

below L2, the vertebral canal is occupied by a bundle of spinal nerve root called______

the cauda equina

The dilated blood vessels seen in bloodshot eyes are vessels of

the conjunctiva

The central sulcus separates the

the parietal lobe from the frontal

the ear is somewhat protected form loud noise by

the stapedius

Neurotransmitters are found in

the synaptic knob

Nerves that directly control the motility of the stomach or rate of the heart beat would belong to

the visceral motor division

nerves that directly control the motility of the stomach or rate of the heartbeat would belong to

the viseral motor divison

The pyramids of the medulla oblongata contain

A descending corticospinal fiber

Name the regional of the spinal cord

Cervical, thoracic, lumbar, sacral

True or False? The somatic nervous system includes motor neurons form the CNS to smooth muscle of the digestive tract?

False

Which of the following is not properly matched?

Perilymph; cochlear duct

Distal to the inter-vertebral foramen, a spinal nerve branches into a posterior and anterior

Rami

In the spinal cord, the somas of the lower motor neurons are found in

The anterior horns

Which of these is caudal to the hypothalamus

The cerebral aqueduct

True or False? On the basis of function, ,neurons are either sensory, motor, or interneurons

True

True or False? The Nervous system is most important in the integration of all body activites

True

True or False? The PNS consists of somatic, autonomic, and enteric divisions

True

True or false? There are 12 pairs of crainial nerves and 31 pairs of spinal nerves

True

The vestibulospinal tract

a descending tract, white matter, entirely within the CNS

Damage to the ______ nerve could result in defects of eye movement

abducens

All of the following except the ________ nerve begin or end in the orbit

accessory

between the dura mater and vertebral bone, one is most likely to find

adipose tissue

Neurons that convey information to the cns are called sensory or ___________ neurons

afferent

neurons that convey information in the CNS are called sensory or _______ neurons

afferent

constriction of the Ciliary body

alters lens thickness

Where can endolymph be located

ampulla, semicircular duct, cochlear duct, saccule

the term "term fiber" usually refers to ______

an axon and its myelin sheath

a spinal motor neuron cell body supplying a skeletal muscle is located in the_______

anterior gray horn

In a sagittal section, the cerebellar white matter exhibits a branching pattern called the _______

arbor vitae

The glial cells that guide migrating neurons in the developing fetal brain are

astrocytes

based on their location, the receptors for sight and sound are classified as

exteroceptors

The most finely detailed vision occurs when an image falls on a pit in the retina called the ______?

fovea centralis

In the peripheral nervous system the somas of the neurons are concentrated in enlarged, knot like structures called_________ connected to the nerves

ganglia

In the peripheral nervous system, the somas of the neurons are concentrated in enlarged knotlike structures called ________ connected to the nerves

ganglia

Fibers of the optic nerve come from the ______ cells of the retina

ganglion

After passing though the vitreous humor, which of the following correctly sequences the path of light through the posterior structures of the eye?

ganglion cells; rods; pigmented epithelium; choroid

outside the CNS, the somas of neurons are clustered in swellings called

gnaglia

the ________ is the region of the CNS that regulates the ANS

hypothalamus

The _____ of the midbrain receive auditory input and trigger the head-turning auditory reflex.

inferior collliculi

The integrative functions of the nervous system are performed mainly by

interneurons

the integrative functions of the nervous system are performed mainly by

interneurons

functionally most neurons are _____ while structurally most neurons are_______

interneurons; multipolar

based on the type of stimulus detected, pacinian corpuscles are classified as

mechanoreceptors

The glial cells that destroy micoroganisms in the CNS are

microglia

Another nae for the axon of a neuron is

nerve fiber

Another name for the axon of neuron is

nerve fiber

Which of the following is not a special sense

nociception

A sensory nerve ending specialized to detect tissue injury and produce a sensation of pain is called a/an

nocieptor

In the central nervous system , cells called _______ perform one of the same functions that schwann cells do in the peripheral nervous system

oligodendrocytes

In the central nervous system, cells called _____ perform one of the same functions that schwann cells do in the peripheral nervous system

oligodendrocytes

Myelin sheaths formed by _______ in the spinal cord are responsible for the characteristic appearance of ________ matter

oligodendrocytes: white

Neuroglia

outnumber neurons and from the bullk of the spinal cord & can multiply and divide

which of the following correctly sequences the path of vibration through the ear?

tympanic membrane, malleus, incus, stapes, oval window

Endolymph is located in all the following except

vestibule

Properly Matched

vitreous humor; posterior cavity ampulla; semicircular duct macula; saccula utricle; vestiblue


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