10.24 Sensory Receptors

Question 1

Golgi tendon organs are at the interface between ________ and ______, they wrap around the _________.

Answer 1

muscle
tendon
collagen

Question 2

what do golgi tendon organs tell you?

Answer 2

force of muscle contraction

Question 3

are golgi tendon organs active in passive movement?

Answer 3

no, no force

Question 4

dynamic stretch of muscle is detected by _________ _________

Answer 4

nuclear bags

Question 5

static stretch of muscle is detected by _________ _________

Answer 5

nuclear chains

Question 6

what type of fiber is the afferent in nuclear chain muscle spindles?

Answer 6

type 2

Question 7

what type of fiber is the afferent in the nuclear bad muscle spindles

Answer 7

Type 1a, 1b

Question 8

when do joint afferents fire?

Answer 8

at extreme ranges of motion of joints

Question 9

what are the (7) skin receptors?

Answer 9

spiral endings around hair follicles
free nerve endings
Merkel receptor
Meissner corpuscle
Pacinian corpuscle
Ruffini endings

Question 10

Merkel receptors detect _________ and are close to the ______ of the skin. They are _________ adapting.

Answer 10

touch
margin
slowly

Question 11

Meissner corpuscles detect __________ and are close to the ________ of the skin. They are _________ adapting

Answer 11

texture
margin
rapidly adapting

Question 12

Ruffini endings detect _________ and are _________ adapting

Answer 12

stretch

slowly adapting

Question 13

Pacinian corpuscles detect _____________ and are ___________ adapting

Answer 13

vibration

rapidly

Question 14

what sensory fiber type supplies all the touch, vibration, texture, etc. receptors?

Answer 14

A-beta

Question 15

what type of sensory receptor detects touch?

Answer 15

merkel

Question 16

what type of sensory receptor detects texture?

Answer 16

messier corpuscle

Question 17

what type of sensory receptor detects stretch?

Answer 17

Ruffini ending

Question 18

what type of sensory receptor detects vibration?

Answer 18

Pacinian corpuscle

Question 19

the larger the diameter, the _______ the conduction

Answer 19

faster

Question 20

list the muscular sensory (proprioception) fiber types (based on size)

Answer 20

1a, 1b
2
3
4

Question 21

list the skin sensory fiber types (based on size/myelination)

Answer 21

A-beta
A-delta
C

Question 22

1a and 1b receptors carry information from what two things

Answer 22

nuclear bags of muscle spindle

golgi tendon organ

Question 23

type 2 receptors carry information from what thing

Answer 23

nuclear chains of muscle spindle

Question 24

what do type 3 receptors carry information from?

Answer 24

chemical/mechanical information from blood vessels in the muscle

Question 25

what do type 4 receptors (sensory) detect?

Answer 25

pain in the muscle

Question 26

what do A-delta fibers detect?

Answer 26

sharp pain

temperature

Question 27

what do C fibers detect?

Answer 27

dull pain

temperature

Question 28

the two-point discrimination test examines size of the _________ __________

Answer 28

receptive field

Question 29

the area in the body a certain sensory cell is responsible for.

Answer 29

receptive field

Question 30

the ________ ________ theory explains how receptors detect the nature of a stimulus. what does it say?

Answer 30

labeled line

different types of sensory receptors respond selectively to different types of stimuli, they travel on different axons

Question 31

what are the two ways sensory receptors can encode for intensity of a stimulus?

Answer 31

1. frequency coding

2. population coding (recruitment)