Class 4: Sense Organs Flashcards Preview

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Flashcards in Class 4: Sense Organs Deck (97)
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1

4 Types of Information Receptors Transmit

1. Modality
2. Location
3. Intensity
4. Duration

2

Tonic Receptors Adapt...

slowly

3

proprioceptors detect...

body position and movement

4

free nerve endings detect

-pain and temperature
-skin and mucous membrane

5

Tactile Discs are associated with...

Merkel Cells (acupuncture)

6

nociceptors detect

pain

7

two types of nociceptors

-fast (myelinated) sharp, stabbing
-slow (unmyelinated) diffuse, dull

8

somatic pain

skin, muscles, joints

9

visceral pain

organs

10

bradykinins are

potent chemicals that stimulate pain fibers

11

CNS modulates pain by releasing...

endorphins

12

Spinal Gating function

-stops pain signals at the posterior horn of the spinal cord.
-blocks signals from traveling up the cord to the brain

13

spinal gating

-stimulation distracts the transmission of the signal

14

in order to have taste molecules must

dissolve in saliva and flood the taste pore

15

five primary sensations

salty, sweet, sour, bitter, umami

16

Salty Taste produced by

metal ions

17

Sweet Taste associated with

carbohydrates and other foods of high caloric value

18

Sour Tastes are

acids, such as citrus fruits

19

Bitter Taste is Associated with

spoiled foods
alkaloids: nicotine, caffeine, quinine, morphine

20

Umami Taste associated with

"Meaty" taste of amino acids in chicken or beef

21

taste is influenced by

food texture, aroma, temperature, and appearance

22

Mouthfeel is detected by

branches of the lingual nerve in papillae

23

Facial Nerve function, covers

involved with taste, anterior 2/3 of tongue

24

Glossopharyngeal nerve location

posterior 1/3 of tongue

25

Vagus Nerve covers

taste buds, pharynx, and epiglottis

26

Olfaction is the sense of

smell

27

Olfactory mucosa contains

10-20 million olfactory cells, which are neurons

28

Olfactory cells are shaped like

bowling pins-cilia extensions

29

olfactory cells are neurons, t/f

T

30

fascicles of olfactory cells are collectively regarded as cranial nerve

I