Ch. 16 eye & ear

How many auditory ossicles are there in each ear?

3

The conjutiva is

vascular

Each eye has ___ lacrimal puncta

2

which are true of conjunctiva? a. it is vascular b. it does not contain nerve endings c. it does not cover the cornea d. it contains goblet cells

a,c,d

function of auditory ossicles

amplify sound and transmit sound waves to inner ear

what chamber is is between the cornea and iris

anterior chamber

What structure is filled with pigment from melanocytes?

choroid

The iris is continuous with the

ciliary body

snail-shaped structure in the inner ear

cochlea

The junction of the palpebral and ocular conjunctiva is called the

conjunctival fornix

The limbus is the junction between the sclera and _______________

cornea

optic disc is associated with

cranial nerve II

The auricle has ___ cartilage that supports its structure

elastic

Auricle directs sound waves into

external acoustic meatus

True or false: the eye is spherical, measuring about 5cm in diameter, and most of it is receded into the orbit of the skull

false

Where are tears produced?

lacrimal apparatus

Lacrimal fluid prevents bacteria infection because it contains an antibacterial enzyme called

lysozyme

Where are photoreceptors located?

neural layer of the retina

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

petrous

what is the space behind the lens called?

posterior cavity

The lens is __ when we are viewing close-up objects

rounded

What structure is the "white" of the eye

sclera

What structure makes up the posterior 5/6 of the fibrous tunic

sclera

Tarsal glands are

sebaceous glands

The ciliary muscles are made of

smooth

The ___ ligaments connect the ciliary body to lens

suspensory

Which layer of the eye contains the blood and lymph vessels

vascular tunic