FREE AND STUDY GAMES ABOUT ANATOMY CH. 16 EXAM

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FREE AND STUDY GAMES ABOUT ANATOMY CH. 16 EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -71 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: The primary function of the __ is to prevent large objects from contacting the eye.

Answer:

eyelashes

Question 2: The semicircular canals are continuous with the __.

Answer:

utricle

Question 3: What structure makes up the posterior 5/6 of the fibrous tunic?

Answer:

sclera Question 4: The iris is continuous with the:

Answer:

ciliary body

Question 5: There are over __ rod cells per eye.

Answer:

100 million Question 6: Place the auditory ossicles in the order that they occur from lateral to medial:

Answer:

malleus, incus, stapes Question 7: Most of fibrous tunic (posterior 5/6) is the tough __, a part of the outer layer that is called the "white" of the eye. Composed of dense irregular c.t. that includes both collagen and elastic fibers.

Answer:

sclera

Question 8: What events occur during light adaptation?

Answer:

rods become inactive, cones gradually adjust, and pupils constrict

Question 9: What is the space behind the lens called?

Answer:

posterior cavity Question 10: Which of the following are true of the cornea: transparent, concave, avascular.

Answer:

transparent, avascular Question 11: The __ provides for eye shape, proteccts the eye's delicate internal components, and serves as attachment site for extrinsic eye muscles. Becomes continuous w/dura mater that surrounds the optic nerve.

Answer:

sclera Question 12: The __ is a strong yet deformable, transparent structure bounded by a dense, fibrous, elastic capsule. Composed of precisely arranged layers of cells that have lost their organelles and are filled completely by a protein called __.

Answer:

lens, crystallin

Question 13: The __ __ vibrates when sound waves hit it. Its vibrations provide the means for transmission of sound wave energy into the middle and inner ear.

Answer:

tympanic membrane

Question 14: What structure focuses incoming light onto the retina?

Answer:

lens Question 15: The __ is the most extensive and posterior region of the vascular tunic. It houses a vast network of capillaries that supply the retina, the inner layer of the eye wall, w/oxygen and nutrients.

Answer:

choroid Question 16: In the center of the iris is a black opening called the __. The iris controls __ size or diameter-and thus the amount of light entering the eye-using its two smooth muscle layers.

Answer:

pupil Question 17: A population of __ __ (stem cells) constantly replaces the gustatory cells that have a 7-10 day life span.

Answer:

basal cells Question 18: Light rays are refracted or bent when they pass through two media:

Answer:

of different densities Question 19: Place the structures of CN II in order from anterior to posterior: optic tract, optic nerve, optic chiasm.

Answer:

optic nerve, optic chiasm, optic tract

Question 20: A taste bud has the appearance of an __.

Answer:

onion Question 21: The __ is a snail-shaped spiral chamber w/in the bone of the inner ear. It has a spongy bone axis, called the modiolus. Protected w/in the core of the __, the membranous labyrinth houses the spiral organ which is responsible for hearing.

Answer:

cochlea Question 22: The tympanic cavity is filled with:

Answer:

air Question 23: The __ is attached to the medial surface of the tympanic membrane and suspended by ligaments bound to the inner wall of the tympanic cavity. It resembles a large hammer in shape.

Answer:

malleus Question 24: Cells of the __ are filled with pigment from the numerous melanocytes in this region. The melanin pigment is needed to absorb extraneous light that enters the eye, allowing the retina to absorb the remaining light rays and form a visual image.

Answer:

choroid Question 25: Order these structures from superficial to deep: choroid, sclera, pigmented layer of retina, neural layer of retina.

Answer:

sclera, choroid, pigmented layer of retina, neural layer of retina

Question 26: The __ resembles an anvil and is the middle auditory ossicle.

Answer:

incus