Lecture 7 Flashcards

1
Q

What are the 5 receptors in the skin (the somatosensory system)?

A

Collectively called cutaneous receptors (Hair follicle, free nerve endings, Meissner’s corpuscles, Ruffini’s corpuscles and Pacinian corpuscles)

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2
Q

What are the somatosensory pathways to the brain?

A

Spinothalamic tract, and Dorsal Column (medial lemniscus)

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3
Q

What are the photoreceptors of the eye, and what environmental stimuli do they detect?

A

Rod cells and cone cells; light

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4
Q

What are the receptors in the skin collectively referred to?

A

cutaneous receptors

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5
Q

What environmental stimuli do hair follicles detect?

A

fine touch and vibration

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6
Q

What environmental stimuli do free nerve endings detect?

A

pain and temperature (hot and cold)

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7
Q

What environmental stimuli do Meissner’s corpuscles detect?

A

low-frequency vibrations and touch

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8
Q

What environmental stimuli do Ruffini’s corpuscles detect?

A

touch

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9
Q

What environmental stimuli do Pacinian corpuscles detect?

A

high-frequency vibrations and touch

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10
Q

The spinothalamic tract transmits information dealing with what?

A

basic sensations of pain, temperature, and crude touch

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11
Q

The dorsal column transmits information dealing with what?

A

advanced sensations of fine detailed touch, proprioception, and vibration

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12
Q

Where is the somatosensory cortex located?

A

in the parietal lobe on the POSTCENTRAL gyrus behind the central sulcus.

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13
Q

What types of cells does the retina contain (aside from rod and cone cells)?

A

bipolar cells, ganglion cells, horizontal cells, and amacrine cells

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14
Q

What are the four types of eye movements?

A

Saccades, Smooth Pursuit, Vestibular Ocular Reflex (VOR), and Vergences

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15
Q

Which receptors detect touch?

A

Ruffini corpuscles, Merkel’s disks, Meissner’s corpuscles, and Pacinian corpuscles

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