Test 4 - CH. 16 SB Review

Receptors of the human body convert stimulus energy into ______.

an electrical signal

Which cavity of the eyeball is divided into an anterior and posterior chamber?

anterior cavity

Gustatory cells are ______.

chemoreceptors

Which structure of the eye absorbs light to prevent it from scattering within the eye?

choroid

The iris is continuous with the ______

ciliary body

As we adjust to low light, our ______ becomes nonfunctional and it may take ______ for rhodopsin to become regenerated sufficiently so that you can see well in low-light conditions.

cones;20-30 minutes

The limbus is the junction between the sclera and the ______.

cornea

The optic disc is associated with ______.

cranial nerve II

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

densities

The auricle has ________ cartilage that supports its structure.

elastic

Which is an accessory structure of the eye?

eyebrow

When the photoreceptors stop ________ the bipolar cells, the bipolar cells can then release their neurotransmitter that binds to receptors on the ganglion cells

inhibiting

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

iris

Tactile receptors are a type of ______.

mechanoreceptors

We use the sense of __________________ to sample our environment for information about the food we will eat, the presence of other individuals in the room, or potential danger.

olfaction/smell

Olfactory receptors ______.

perceive odors

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

petrous

If stimulated over a period of time, ________ receptors lose sensitivity over time.

phasic

What type of receptor can undergo adaptation?

phasic

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

receptive field

Some individuals experience pain in their left shoulder during a heart attack. This is an example of ______.

referred pain

______ occurs when impulses from an organ are perceived as originating from the skin.

referred pain

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

Receptors for general senses are usually ______.

simple in structure

Receptors for general senses are distributed throughout the ______ and viscera.

skin

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

small

Taste buds are found on the tongue and ______.

soft palate

Mechanoreceptors located in the skin and mucous membranes are called ______ receptors.

tactile

A feature common to all receptors is ______.

the ability to respond to a stimulus

The vascular tunic of the eye is also called the ______.

uvea

The posterior cavity contains the ______ humor.

vitreous