Chapter 16 smartbook

The external layer of the eyeball is the ______ tunic.

fibrous

True or false: The eye is spherical, measuring about 2.5 centimeters in diameter, and most of it is receded into the orbit of the skull.

True

Hearing and equilibrium are transmitted along which cranial nerve? a. VII b. IX c. VIII d. X e. VI

VIII

Sensory receptors in which structures help monitor and adjust our equilibrium? Multiple select question. a. saccule b. semicircular ducts c. utricle d. cochlea e. auditory tube

a, b, c

Receptors of the human body convert stimulus energy into ______. a. chemicals b. an electrical signal c. mechanical energy

an electrical signal

Which cavity of the eyeball is divided into an anterior and posterior chamber?

anterior cavity

What chamber is between the iris and cornea? a. posterior chamber b. anterior chamber

anterior chamber

Optic tracts extend to which structures after they leave the optic chiasm? a. inferior colliculi b. the lateral geniculate nucleus of the thalamus c. superior colliculi d. the medial geniculate nucleus of the hypothalamus

b, c

Which are the characteristics of the cornea? Multiple select question. a. vascular b. avascular c. transparent d. opaque

b, c

The sclera _______. (2 answers) a. is made of loose connective tissue b. is made of dense connective tissue c. allows light to enter the eye d. provides for eye shape

b, d

When the ___ membrane moves, the ___ on the spiral organ hair cells distort because they are anchored by the tectorial membrane.

basilar, stereocilia

Gustatory cells are found in taste ______.

buds or receptors

Gustatory cells are ______. a. chemoreceptors b. photoreceptors c. mechanoreceptors

chemoreceptors

Which are part of the vascular tunic? a. sclera, cornea b. choroid, ciliary body, iris c. pigmented layer, neural layer

choroid, ciliary body, iris

The auditory sensory axons of the _____ branch of cranial nerve number _____ terminate in the cochlear nucleus within the brainstem.

cochlear; VIII

The limbus is the junction between the sclera and the ______. a. cornea b. choroid c. retina d. iris

cornea

Light rays are refracted or bent when they pass through two media of different ______. a. densities b. molarities c. colors d. solubilities

densitites

Which is an accessory structure of the eye? Multiple choice question. a. pupil b. lens c. iris d. eyebrow

eyebrow

The external layer of the eyeball is the ______ tunic. a. nervous b. vascular c. fibrous

fibrous

The term equilibrium refers to our awareness and monitoring of our _____ position.

head

What structure is the dividing line between the anterior and posterior chambers? a. iris b. cornea c. retina

iris

Tactile receptors are a type of ______. a. mechanoreceptor b. nociceptor c. thermoreceptor d. chemoreceptor

mechanoreceptor

tongue and soft palate house ____ and _____ to provide us with information about the texture and temperature of our food, respectively.

mechanoreceptors; thermoreceptors

Optic tracts ultimately are directed to the primary visual cortex in the ______ lobe. a. frontal b. temporal c. occipital d. parietal

occipital

Optic tracts ultimately are directed to the primary visual cortex in the ______ lobe. a. parietal b. temporal c. frontal d. occipital

occipital

The sense of smell is called ______. a. olfaction b. nociception c. proprioception d. gustation

olfaction

The sense of smell is called ______. a. proprioception b. gustation c. nociception d. olfaction

olfaction

The fat surrounding the eye is called ______ fat.

orbital; periorbital

Which are part of the retina? a. sclera, cornea b. choroid, ciliary body, iris c. pigmented layer, neural layer

pigmented layer, neural layer

Most of the eye is ______ the orbit of the skull. a. exterior to b. receded into

receded into

The area that a receptor cell gathers information from is called the ______. a. phasic receptor b. tonic receptor c. receptive field d. stimulus

receptive field

______ occurs when impulses from an organ are perceived as originating from the skin.

referred pain

______ occurs when impulses from an organ are perceived as originating from the skin. a. Phantom pain b. Referred pain

referred pain

The apparent distortion of the spoon in the water glass is due to the phenomenon called _____.

refraction

What structure makes up the posterior 5/6 of the fibrous tunic? a. cornea b. sclera c. iris

sclera

Which part of the eye is an attachment site for extrinsic eye muscles? a. cornea b. sclera c. lens

sclera

Which are part of the fibrous tunic? a. sclera, cornea b. choroid, ciliary body, iris c. pigmented layer, neural layer

sclera, cornea

Receptors for general senses are usually ______. a. simple in structure b. found in specialized sensory organs c. complex in structure

simple in structure

Receptors for general senses are distributed throughout the ______ and viscera. a. skin b. eyes c. ears d. bones

skin

Localization and sensitivity are easily determined in a ______ receptive field.

small

Mechanoreceptors located in the skin and mucous membranes are called ______ receptors. a. chemical b. tactile c. visceral

tactile

What is the most numerous type of receptor? a. visual receptors b. chemoreceptors c. proprioceptors d. tactile receptors

tactile receptors

gustation is the sense of ______.

taste

The middle and inner ear are in which bone? a. temporal bone b. occipital bone c. sphenoid bone d. ethmoid bone

temporal bone

A feature common to all receptors is ______. a. they are found in specialized sense organs b. the ability to respond to a stimulus c. they are always unicellular d. they are found on tips of axons

the ability to respond to a stimulus

The vascular tunic of the eye is also called the ______. Multiple choice question. a. iris b. uvea c. retina d. cornea

uvea

The vascular tunic of the eye is also called the ______. a. uvea b. cornea c. retina d. iris

uvea

The vascular tunic of the eye is also called the ______. a. uvea b. iris c. cornea d. retina

uvea

Which layer of the eye contains the blood and lymph vessels? a. vascular tunic b. retina c. fibrous tunic

vascular tunic

Receptors initiate sensory input to the ______. a. central nervous system b. peripheral nervous system c. skin d. muscles e. organs

CNS

Some individuals experience pain in their left shoulder during a heart attack. This is an example of _____ . a. referred pain b. phantom pain

referred pain

The cornea is _____. a. transparent b. opaque

transparent

Pain is an example of a _____ sense.

general

We use the sense of _____ to sample our environment for information about the food we will eat, the presence of other individuals in the room, or potential danger.

olfaction or smell

Olfactory receptors ______. a. perceive tastes b. perceive sounds c. maintain coordination and balance d. perceive odors

perceive odors

The external ear is located mostly on the outside of the body, while the middle and inner ear areas are housed within the ________ part of the temporal bone.

petrous

What type of receptor can undergo adaptation?

phasic

If stimulated over a period of time, _____ receptors lose eventually sensitivity.

phasic (adapting)