Chapter 8

Question 0

Specific nerve energies

Answer 0

Receptors and neural channels for different senses are independent

-each sense uses different nerve energy

Question 1

The concept of ‘labeled lines’

Answer 1

The brain recognizes distinct senses due to action potentials traveling along separate nerve ducts

Question 2

Sensory transduction

Answer 2

Conversion of energy from stimulus into a change in membrane potential in a receptor cell

Question 3

Generator potential

Answer 3

Local changes in membrane potential

Question 4

Adaptation

Answer 4

Progressive loss of response to a maintained stimulus

Question 5

Phase receptors

Answer 5

Display adaptation/ decrease frequency of action potentials

Question 6

Tonic receptors

Answer 6

Show slow or no decline in action potential frequency

Question 7

Epidermis

Answer 7

Outermost thinnest layer

Question 8

Dermis

Answer 8

Middle layer has nerve fibers

Question 9

Hydrodermis

Answer 9

Anchors muscles

Shapes body

Question 10

Pacinian corpuscles

Answer 10

Vibrate

Fast adapting

Question 11

Meissners corpuscles

Answer 11

Touch, fast adapting

Question 12

Merkel’s disk

Answer 12

Touch

Slow adapting

Question 13

Ruffinni’s

Answer 13

Stretch

Fast adapting

Question 14

Pain

Answer 14

unpleasant experience

Tissue damage nociceptors

Question 15

Nociceptors

Answer 15

Peripheral receptors respond to painful stimuli

Question 16

Free nerve endings

Answer 16

Location (dermis)

Specialized receptor protein

Responds to temperature changes, chemicals, and pain

Question 17

TRPV1 receptors. (Nociceptor)

Answer 17

Receptor that binds to capsaicin (hot peppers)

Detects painful heat

On c fibers (thin unmyelinated fibers)

Question 18

TRP2 receptor

(Nociceptor)

Answer 18

Detects higher temperatures

Doesn’t respond to capsaicin

On A fibers

Question 19

(Nociceptor) Cool menthol receptor 1(cmr1)

Answer 19

Responds to menthol and to cool temperatures