Question 1

These receptors are stimulated by changes in pressure or movement of body fluids.&#10;A) photoreceptors&#10;B) chemoreceptors&#10;C) nociceptors&#10;D) mechanoreceptors

Accepted Answer

Receptors are mechanoreceptors that respond to forces that press, move, or deform tissue.

Question 2

These receptors are stimulated by tissue damage (also called pain receptors).&#10;A) thermoreceptors&#10;B) photoreceptors&#10;C) nociceptors&#10;D) mechanoreceptors

Accepted Answer

Pain receptors, or nociceptors (noh-see-SEP-tors): Receptors stimulated by tissue damage or distention.

Question 3

The receptors for this sense are free nerve endings that are stimulated by tissue damage.&#10;A) pain&#10;B) taste&#10;C) touch&#10;D) pressure

Accepted Answer

The receptors for pain, called nociceptors, consist of free nerve endings that are stimulated by tissue damage.

Question 4

When pain feels as if it is coming from an area other than the site where it originates, it is called:&#10;A) proprioception.&#10;B) deferred pain.&#10;C) referred pain.&#10;D) disassociated pain.

Accepted Answer

When pain feels as if it is coming from an area other than the site where it originates, it is called referred pain

Question 5

Which of the following is not sensed by the tongue's taste receptors?&#10;A) bitter&#10;B) odor&#10;C) sweet&#10;D) salty

Accepted Answer

The four basic taste sensations are salty, sweet, sour, and bitter.

Question 6

The outermost layer of the eye (tough, fibrous connective tissue) is called the:&#10;A) choroid.&#10;B) canal of Schlemm.&#10;C) aqueous humor.&#10;D) sclera.

Accepted Answer

The outermost layer is called the sclera (SKLEH-rah). The sclera is a tough fibrous connective tissue that covers most of the eyeball.

Question 7

Which of the following is the name of the colored portion of the eye?&#10;A) pupil&#10;B) iris&#10;C) cornea&#10;D) lens

Accepted Answer

The cornea covers the area over the iris (the colored portion of the eye).

Question 8

Which layer of the eye contains the rods and cones?&#10;A) retina&#10;B) optic disc&#10;C) cornea&#10;D) suspensory ligaments

Accepted Answer

The retina is the nervous layer containing the visual receptors, which are sensitive to light and are therefore called photoreceptors. The two types of photoreceptors are rods and cones.

Question 9

Nearsightedness is an error of refraction where the lightwaves are:&#10;A) blocked due to scarring.&#10;B) blocked due to cararacts.&#10;C) focused behind the retina.&#10;D) focused in front of the retina.

Accepted Answer

Errors of refraction such as nearsightedness and farsightedness can adversely affect the focusing of light on the retina. Light waves are focused either in front of the retina (nearsightedness) or beyond the retina (farsightedness).

Question 10

The semicircular canals, cochlea, and vestibule are located in which area of the ear?&#10;A) middle ear&#10;B) inner ear&#10;C) external ear&#10;D) eustachian tube

Accepted Answer

The inner ear has three parts: the vestibule, the semicircular canals, and the cochlea.

Deck 13: Sensory System