Chapter 16 Hw

What are the functions of the auditory ossicles?

- transmit sounds waves to inner ear - amplify sound

tactile disc

-Expanded nerve terminal that synapses with Merkel cell -Sensitive to fine touch

Equilibrium

A state of balance

Which are a part of the fibrous tunic?

Cornea, sclera

What is the name of the elevated region of the ampulla of the semicircular canal?

Crista ampullaris

Which is an accessory structure of the eye?

Eyebrow

What disease causes fluid build up in the eye, dislocating the lens?

Glaucoma

What type of receptor can undergo adaptation?

Phasic

What structure is the "white" of the eye?

Sclera

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

Sclera

Which part of the eye is an attachment site for extrinsic eye muscles?

Sclera

cribriform plate

The horizontal plate of the ethmoid bone separating the cranial cavity from the nasal cavity.

Which are true of rods?

There are more than 100 million rod cells per eye, They function well in dim light.

Which are true of the olfactory hairs?

They are unmyelinated, They are immobile.

Hearing and equilibrium are transmitted along which cranial nerve?

VIII

Hearing and our sense of balance comes from the stimulation of which cranial nerve?

Vestibulocochlear

basal cell

a type of cell in the innermost layer of the epidermis or other epithelial tissue.

What chamber is between the iris and cornea?

anterior chamber

Aqueous humor is secreted into the posterior chamber before traveling to the

anterior chamber of the eye.

What type of fluid is found in the anterior cavity of the eyeball?

aqueous humor

Which are the correct names for the tube that connects the middle ear to the nasopharynx?

auditory tube, pharyngotympanic tube, eustachian tube

Sound waves are funneled into the ear by the

auricle

proprioception

changes in body position

Gustatory cells are

chemoreceptors

The iris is continuous with the

ciliary body

The auditory tube is normally

closed

What type of photoreceptors detects color?

cones

The receptors for the special senses are found within the...

cranium.

What is the name of the gelatinous dome with embedded stereocilia of the semicircular canal?

cupula

The sclera is made of --------------, providing for eye shape.

dense connective tissue

Light rays are refracted or bent when they pass through two media of different

densities

root hair plexus

detect hair movement

We use the sense of olfaction to sample our

environment for information about the food we will eat, the presence of other individuals in the room, or potential danger.

The external layer of the eyeball is the _____ tunic.

fibrous

The outmost layer of the eye is called the ______ tunic.

fibrous

In the eye, the Vitreous humor is

gelatinous

Which may result in symptoms such as reduced field of vision, dim vision, and/or halos around lights?

glaucoma

The vestibulocochlear nerve transmits ______ information.

hearing and equilibrium

Thermoreceptors location

hypothalamus and skin

Where are photoreceptors located?

in the neural layer of the retina

What structure is the dividing line between the anterior and posterior chambers?

iris

As tears drain through the ------, they enter small holes called the-----

lacrimal caruncle; lacrimal puncta.

Pacinian corpuscles are also called

lamellated corpuscles

What type of receptors detects deep pressure and vibration?

lamellated corpuscles

The nasolacrimal duct is found on the ___lateral___ side of the nose.

lateral.

The utricle and saccule are involved in functions involving the position of the head?

linear acceleration, static equilibrium

olfactory receptor cell location

nasal cavity

A lack of photoreceptors in this structure creates the "blind spot"

optic disc

The vibration of the tympanic membrane causes movement of the

ossicles

free nerve ending

pain and temperature

nociceptors

pain receptors

Accommodation is controlled by the ______ division of the nervous system.

parasympathetic

The types of the receptor that include only the somatic sensory receptors within joints, muscles, and tendons are called

proprioceptors.

The area that a receptor cell gathers information from is called the

receptive field

The apparent distortion of the spoon in the water glass is due to the phenomenon called

refraction

chemoreceptors

respond to chemicals, detects molecules dissolved in fluid, that monitor the concentration of carbon dioxide in our blood

photoreceptors

respond to light

The semicircular ducts are involved in detecting

rotational acceleration.

Audition

sense of hearing

Olfaction

sense of smell

Gustation

sense of taste

Accommodation is the process of making the lens more

spherical

Tactile cells associated with tactile discs are located in the

stratum basale

Gustatory cells are found in

taste buds

Vision

the ability to see

The vestibule contains two structures

the utricle, and saccule

Taste buds are found on the

tongue and soft palate

It is the utricle and saccule that inform your brain that your head is

upright

The vascular tunic of the eye is also called the

uvea

Stretch receptors in the stomach would be classified as what type?

visceral sensory

The posterior cavity contains the ______ humor.

vitreous

The lens is ____ when we are viewing faraway objects

_flattened_

Olfactory receptor cells are ______ neurons.

bipolar

Somatic receptors are found within the

body wall

The auditory sensory axons of the cochlear branch of cranial nerve number 8 terminate in the cochlear nucleus within the

brainstem

The sphincter pupillae ______ the pupil

constricts

The optic disc contains ______ photoreceptors.

no

Which structures are part of the vestibular complex?

saccule, semicircular ducts, utricle

The cochlea has three fluid-filled ducts. Which are the names of these ducts?

scala vestibuli, scala tympani, cochlear duct

If stimulated over a period of time, adapting receptors lose eventually

sensitivity

baroceptors

sensory input from blood vessels -informs brain on changes to pressure in vessels

Localization and sensitivity are easily determined in a ______ receptive field.

small

A flattened dendritic disc is a type of unencapsulated receptor called a

tactile disc

When the basilar membrane moves, the stereocilia on the spiral organ hair cells distort because they are anchored by the

tectorial membrane