B7-003 Sensory Transduction

Question 1

specialized cells for detecting particular changes in environment

Answer 1

sensory receptors

Question 2

occurs at the peripheral terminal of a sensory receptor

Answer 2

transduction

Question 3

number/rate of action potential
function of number of neurons activated

Answer 3

intensity

Question 4

a decrease in neural response to maintained stimulation

Answer 4

adaptation

Question 5

area of skin where stimulation produces activation of a neuron

Answer 5

receptive field

Question 6

smaller receptive fields result in higher

Answer 6

acuity

Question 7

respond to high frequency vibration deep in the skin

Answer 7

pacinian corpuscles

Question 8

respond to low frequency vibration near the skin’s surface

Answer 8

Meissner’s corpuscles

Question 9

fibers that have the largest diameter and are heavily myelinated

Answer 9

A-alpha

Question 10

fastest conducting fibers

Answer 10

A-alpha

Question 11

order of decreasing conduction velocity and size for fiber types

Answer 11

A-alph
A-beta
A-delta
C-fibers

Question 12

small diameter, unmyelinated muscle afferent nerves with slow conduction velocity

Answer 12

group IV

Question 13

unmyelinated, small diameter neurons with no specialized sensory apparatus at their peripheral terminals

Answer 13

C fibers

Question 14

sense pain and temperature

Answer 14

C fibers

Question 15

sense deep pressure

Answer 15

Pacinian corpuscles

Question 16

sense proprioception [2]

Answer 16

muscle spindles
Golgi tendon organelles

Question 17

stimulus intensity is encoded by [2]

Answer 17

number of action potentials
activating nearby receptors with higher thresholds

Question 18

waves of movement associated with vibration of energy waves of audible sound activate what type of receptors?

Answer 18

mechanoreceptors

Question 19

stimulated by chemical stimuli to encode smell, taste, or pain

Answer 19

chemoreceptors

Question 20

sense signals in the skin produced by inflammation

Answer 20

chemoreceptors

Question 21

neurons for selective pain sensation

Answer 21

nociceptors

Question 22

the greatest degree of acuity in sensory systems is encoded by sensors with […] receptive fields with […] convergence in the spinal cord

Answer 22

small
little

Question 23

reduce acuity [3]

Answer 23

large receptive fields
fields that overlap extensively
extensive convergence in the synapses

Question 24

initial cellular potential produced by the integration of excitatory and inhibitory postsynaptic potentials produced by the stimulus

Answer 24

generator potential

Question 25

if the generator potential is adequately large, it initiates

Answer 25

action potential