Other Special Senses

Question 1

Pressure/Touch receptors

Answer 1

meissners corpuscles, pancinian corpuscles, hair root plexus, ruffini end organs, generator potentials

Question 2

meissners corpuscles

Answer 2

type of nerve ending responsible for sensitivity to pressure

Question 3

pancinian corpuscles

Answer 3

type of nerve ending responsible to sensitivity to vibrations

Question 4

hair root plexus

Answer 4

sends nerve impulses to the brain when hair moves

very sensitive

Question 5

ruffini end organs

Answer 5

nerve ending responsible for pressure, does not adapt to pressure,

sustained pressure

located in deep layers of tissue

Question 6

generator potentials

Answer 6

sensory for pressue, does adapt to pressure

after sustained pressure it will no longer be felt until released

Question 7

temperature sensation

Answer 7

naked nerve endings sense temperature

Question 8

pain sensation

Answer 8

nerve endings

understand dermatomes and referred pain

Question 9

proprioreception

Answer 9

musclespindles, golgi tendon organs, position of muscles/joints, prevents over-stretch

also in the utricle

Question 10

Nerves affecting taste

Answer 10

Facial 7, Glossopharyngeal 9, Vagus 10

Question 11

Nerves affecting motor (tongue)

Answer 11

Hypoglossal 12

Question 12

Nerves affecting general sensation (tongue)

Answer 12

Trigeminal 5

Question 13

Bitter (rear) and sweet (tip) reception

Answer 13

1. triggers receptor ligand binding
2. followed by cellular changes in IP3 (bitter) or cAMP (sweet)

Question 14

Sour reception

Answer 14

1. closes K+ channel
2. action potential triggered

Question 15

Salt reception

Answer 15

1. Na+ accumulates
2. action potential triggered

Question 16

All taste receptors

Answer 16

trigger Ca++ entry and neurotransmitter release

smell helps

Question 17

Olfaction chemoreceptors

Answer 17

bipolar cells with cilia in mucous layer