A&P Exam Chapter's 15, 17, & 18

Why does a person's nose run when they cry?

Tears drain into the nasal cavity via the nasolacrimal duct

What type of genetic disorder is red-green color blind?

X-linked

The ciliary body consists of

a ciliary ring and ciliary processes

Inflammation of one of the ciliary glands of the eyelashes is called

a sty

Which cranial nerves innervates an eye muscle?

abducens LR6SO4 all others CNIII

Pinkeye is

an acute inflammation of the conjunctiva

he auditory tube equalizes air pressure

between the middle ear and outside air

The transparent anterior portion of the sclera is the

cornea

Depth perception is the ability to

distinguish between near and far objects and judge their distance.

The malleus, incus, and stapes transmit vibrations

from the eardrum to the oval window

Which portion of the ear contains the sense organs for hearing and balance?

inner ear

The contractile structure that surrounds the pupil is the

iris

Which structure is part of the vascular tunic?

iris

Night blindness could be caused by a

lack of rhodopsin

The photoreceptor cells are located in the

photoreceptive layer of the retina

To which colors are the three different kinds of cones sensitive?

red, blue, and green

The lens focuses light on the

retina

What is associated with the retina?

rods and cones

Increased fluid accumulation in the cornea would result in

scattering of light rays

The outermost tunic of the eyeball is the

sclera

In bright sunlight, the pupil of your eye constricts and contracts the

sphincter pupillae

The sensation of hearing occurs when sensory impulses from the ears are transmitted to the auditory cortex in the __________lobe from the _________nerve

temporal; vestibulocochlear

To focus on objects closer than 20 feet

the ciliary muscles must contract

The main factor affecting depth of focus is

the size of the pupil

Some thyroid disorders are characterized by an increase in

the width of the palpebral fissure. This would be an increase in the distance between the eyelids

The external ear terminates at the

tympanic membrane

Lable the diagram

Olfactory bulb (B)

Arrange the following structures in the order in which they vibrate when a sound wave enters the ear.

Eardrum Ossicles Oval Window Peri Endo

Damage to the vestibulocochlear nerve would result in

loss of hearing and balance

Which auditory ossicle is attached to the tympanic membrane?

malleus

Blood vessels enter the eye and nerve processes exit the eye at the

optic disc