Week 2 Receptors, Fiber Types

Question 1

Tonic receptors (traits)

Answer 1

slow adapting
transmit impulses as long as stimulus is present
detects continuous stimulus strength

Question 2

Tonic receptors (kinds)

Answer 2

Muscle spindles
Golgi tendon organs 
Macula and vestibular receptors 
Baroreceptors 
Chemoreceptors

Question 3

Phasic receptors

Answer 3

rapidly adapting
does not transmit a continual signal
stimulated only when stimulus strength changes
transmits information about rate of change

Question 4

Type A fibers

Answer 4

subdivided into alpha, beta, gamma, delta

large and medium sized myelinated fibers of spinal types

Question 5

Type C fibers

Answer 5

small, unmyelinated fibers
conducts signals at low velocity
makes up more than half of all sensory fibers in most peripheral nerves and all postganglionic autonomic fibers

Question 6

Group 1a

Answer 6

Type Aalpha

fibers from annulospiral endings of muscle spindles

Question 7

Group Ib

Answer 7

Type Aalpha fibers

fibers from golgi tendon organs

Question 8

Group II

Answer 8

Type Abeta, gamma fibers

from cutaneous tactile receptors and flower spray

Question 9

Group III

Answer 9

Type A-delta fibers

carry temperature, crude touch, and pricking pain

Question 10

Group IV

Answer 10

Type C fibers

carry pain, itch, temperature, and crud touch