Sense Organs Anatomy

Rods and cones are examples of:

A) Chemoreceptors

B) Mechanoreceptors

C) Photoreceptors

D) Encapsulated nerve endings

C) Photoreceptors

Which statement is true regarding Meissner's corpuscles?

A) They are free nerve endings.

B) They are encapsulated nerve endings.

C) They are special sense organs.

D) They are located near the junction of tendons and muscles.

B) They are encapsulated nerve endings.

The special sense organs:

A) Are widely distributed throughout the body

B) Enable us to detect pain

C)Are dense in the fingertips

D) Are the tongue, nose, eye, and ear

D) Are the tongue, nose, eye, and ear

Olfactory cells carry impulses associated with:

A) Taste

B) Equilibrium

C) Smell

D) Sight

C) Smell

Both olfactory and gustatory receptors are:

A) Thermoreceptors

B) Chemoreceptors

C) Photoreceptors

D) Mechanoreceptors

B) Chemoreceptors

The organ of Corti and cristae ampullaris are receptors for the:

A) Eye

B) Ear

C) Nose

D) Taste buds

B) Ear

Which of the following is not a structure of the middle ear?

A) Incus

B) Stapes

C) Malleus

D) Vestibule

D) Vestibule

Impulses are transmitted from the inner ear to the brainstem by way of the:

A) Vestibular nerve

B) Cochlear nerve

C) Abducens nerve

D) Oculomotor nerve

B) Cochlear nerve

The organ of Corti is located in the:

A) Vestibule

B) Semicircular canal

C) Scala vestibuli

D) Cochlear duct

D) Cochlear duct

The lens is involved in the process of:

A) Refraction

B) Adduction

C) Rotation

D) Convergence

A) Refraction

The function of the lacrimal gland is to:

A) Secrete aqueous humor

B) Secrete vitreous humor

C) Drain aqueous humor

D) Secrete tears

D) Secrete tears

The lens of the eye is held in place by the:

A) Suspensory ligaments

B) Aqueous humor

C) Vitreous humor

D) Cornea

A) Suspensory ligaments

The "blind spot" may also be referred to as the:

A) Fovea centralis

B) Macula lutea

C) Retinal artery

D) Optic disk

D) Optic disk

The anterior, transparent part of the fibrous tunic is called the:

A) Pupil

B) Sclera

C) Cornea

D) Ciliary body

C) Cornea

Clouding of this structure causes cataracts.

A) Retina

B) Sclera

C) Lens

D) Cornea

C) Lens

What is the inner layer of the eye that contains the rods and cones?

A) Retina

B) Sclera

C) Cornea

D) Choroid

A) Retina

The macula lutea contains:

A) Cones

B) Cataracts

C) Aqueous humor

D) Rods

A) Cones

How many types of cones are present in the retina?

1

2

3

4

3

Olfactory nerve impulses pass through the olfactory tract and into the thalamic and olfactory centers of the brain for ______, ________, and ________ storage

Interpretation, Integration, Memory

What is more active at higher light levels and is considered photopic vision

Cones

The ______ labyrinth is made up of the vestibule, the cochlea, and semicircular canals

Bony

The _____ labyrinth is made up of utricle and saccule inside the vestibule, cochlear duct inside the cochlea, and the membranous semicircular canals inside the bony ones.

Membranous

The abbreviation for the second step in the pathway of sound waves

EAM

The transparent anterior portion of the eye that lies over the iris

Cornea

What contains nerve fibers from only one retina

Optic nerve

The colored portion of the eye is termed

Iris

The photopigment found in the rods

Rhodopsin

What is responsible for low light levels and is known as scotopic vision

Rods

The eye muscles responsible for voluntary movement of the eye

extrensic

The eye muscles responsible for involuntary movements of the eye

Intrinsic

There are 3 _____ canals which sit at right angles to each other within the inner ear

Semicircular

What rests on the basilar membrane, consists of supporting cells and hair cells

Organ of Corti

What is the clear, potassium rich fluid filling the membranous labyrinth

Endolymph

What is similar to cerebrospinal fluid that surrounds the membranous labyrinth

Perilymph

What results from stimulation of the auditory area of the cerebral cortex

hearing

What fluid leaks out of the eye when the eye is injured

Aqueous humor

What fluid helps maintain sufficient intraocular pressure to give the eyeball its shape

Vitreous humor