Chapter 14 Flashcards

1
Q

The general senses

A

have receptors throughout the skin and muscles. You will learn about the importance of pain as a general sense.

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2
Q

The special senses

A

are stimulated by the cranial nerves and include sight, hearing, taste, and smell.

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3
Q

Acute pain fibers

A

Pain fibers that carry nerve impulses quickly, at velocities of up to 30 meters per second, and result in short, sharp pain.

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4
Q

Chronic pain fibers

A

Pain fibers that carry nerve impulses quickly, at velocities of up to 30 meters per second, and result in short, sharp pain.

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5
Q

Retina

A

A neural component of the eye that contains the visual receptors.

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6
Q

Refraction

A

—the bending of light rays.

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7
Q

Rods

A

The receptors in the eye that receive light stimuli.

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8
Q

Cones

A

The receptors in the eye that receive color stimuli.

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9
Q

Sound

A

is created by vibrations of air, water, or solid materials.

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10
Q

Eardrum

A

The membrane in the ear that vibrates in response to sound waves.

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11
Q

The vestibulocochlear nerve

A

transfers the sound vibrations to the brain.

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12
Q

The olfactory neurons

A

have a very low threshold and adapt rapidly.

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13
Q

Filiform papillae.

A

do not have taste buds

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14
Q

Five basic types of taste exist

A

salt, sour, sweet, bitter, and umami.

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15
Q

The fibrous tunic

A

is the outer layer of the eyeball. It consists of the sclera and the cornea.

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16
Q

The vascular tunic

A

is the middle layer of the eyeball.

17
Q

the nervous tunic

A

The retina, contains neurons sensitive to light.

18
Q

Visual Acuity

A

Visual acuity is the eye’s ability to focus an image on the retina so that a clear image is perceived.

19
Q

fovea centralis

A

Most visual images are focused here, , which has a very high concentration of cones.