A&P II Chapter 8 questions

What does membranous labyrinth contain?

Endolymph

What are the three areas of the ear?

External ear, middle ear, and inner ear

What are the two housing senses of the ear?

Hearing, equilibrium

How is aqueous humor reabsorbed?

Into venous blood through the scleral venous sinus, or canal of schlemm

What does the pharyngotympanic tube connect?

It connects the middle ear with the threat

The small, peglike projections of the tounge's surface are called?

Papillae

What is membranous labyrinth suspended in?

Perilymph

What is light bent or refracted by?

The cornea, aqueous humor, lens, and vitreous humor

Where must light be focused for optimal vision?

To a point on the retina

When do cataracts result?

When the lense becomes hard and opaque with age

The transparent portion of the fibrous layer of the eye is the?

cornea

What structures refract light before it hits the retina?

cornea, humors, and lens

What is located in the superior-lateral region of the orbit?

lacrimal gland

What structure is part of the system that produces and drains tears?

lacrimal gland

The biconvex structure that focuses light on the retina is the?

lens

What flexible, crystal-like structure of the eye focuses light on the retina?

lens

Identify the pathway of vibrations as they travel from the tympanic membrane to the ossicles _____________

malleus, incus, stapes

Our sense of static equilibrium is created by the?

movement of otoliths along hair cells

At what point do some axons leave the optic nerve and cross to the opposite side of the brain?

optic chiasma

Fibers from the medial side of each eye cross over to the opposite side of the brain at the?

optic chiasma

What region of the retina lacks photoreceptor cells?

optic disc (blind spot)

Tiny stones made of calcium salts that roll in response to changes in gravitational pull are called?

otoliths

What part of the retina absorbs light and prevents it from scattering inside the eye?

pigmented layer

The function of the choroid layer of the eye is to?

prevent light from scattering inside the eye

What is a part of the sensory layer of the eye?

retina

Which layer of the eye contains photoreceptors known as rods and cones?

retina

Which layer of the eye contains rods and cones?

retina

Dynamic equilibrium receptors that detect information about angular or rotational movements of the head are housed in the?

semicircular canals

Hair cells that function as hearing receptors are located within the?

spiral organ of Corti

What sensation is related to sitting motionless at a desk studying your anatomy and physiology material?

static equilibrium

The five taste sensations are ___________________

sweet, sour, bitter, salty, umami

The five taste sensations are...

sweet, sour, bitter, salty, umami

What senses use chemoreceptors?

taste and smell

What part of the eye is affected by cataracts?

the lens

Where are taste buds found?

the sides of papillae

Where are olfactory receptors located?

the superior region of the nasal cavity

The "hairs" of the hair cells within the organ of Corti are embedded in what?

the tectorial membrane

Sound waves entering the external acoustic meatus (auditory canal) hit the eardrum , also known as the?

tympanic membrane

What membrane divides the outer ear from the middle ear?

tympanic membrane (ear drum)

What sensation allows someone to enjoy the "beef taste" of a steak?

umami

What is the orientation of images formed on the retina?

upside down and reversed left to right

What are equilibrium receptors of the inner ear called?

vestibular apparatus

Static equilibrium receptors are located in the?

vestibule

What is associated with rods?

vision in dim light

The gel-like substance housed in the posterior segment of the eye is the?

vitreous humor (body)

What structure is lined with ceruminous glands?

external acoustic meatus (auditory canal)

Which area of the retina has the highest concentration of cones?

fovea centralis

Hearing receptors within the spiral organ of the Corti are called __________________

hair cells

What must be stimulated in order for the sense of hearing to be transmitted to the cochlear nerve?

hair cells

Where are there no photoreceptor cells?

At the optic disc or the blind spot

What are taste buds frequently replaced by?

Basal cells

A person with total color blindness may lack?

cones

The membrane that covers the outer surface of the eye and lines the eyelids is the?

conjunctiva

The auditory ossicle called the "anvil" is also known as the?

incus

The pupil is an opening within the?

iris

What gland releases tears onto the anterior surface of the eyeball?

lacrimal

Which gland is located above the lateral end of each eye and releases tears?

lacrimal