Lecture 2

Question 1

What nerves innervabl to body?

Answer 1

Spinal

Question 2

What nerves innovate the face and thought

Answer 2

Cranial

Question 3

What is a demotore

Answer 3

Area of skin innovated by Nev ones eating at the some and of the spinal chord

Question 4

What is the relative diameter and conduction velocity of A beta A delta and c serve fibers?

Answer 4

AB is fastest and widest
Adelta is second wideestand fastest
C are smallest and slowest

Question 5

Which sensory nerve fibers are myelinated ?

Answer 5

A beta and A delta

Question 6

What is the relative threshold of action pother Hals for the A beta A delta and C fibres.

Answer 6

A beta is low )a delta and C are both high

Question 7

What sensation does A beta fibres transport

Answer 7

Touch

Question 8

What sensation do A delta fibres transmit ?

Answer 8

Pain and temperature

Question 9

What sensation do C fibres transmit?

Answer 9

Pain temperature and itch

Question 10

What are the superficial skin receptors?

Answer 10

Merklesdisk, free nerve ending ) messiness corpuscle

Question 11

What one the deep skin receptors

Answer 11

Hair follicle recptor pacinion corpuscle and ruffians ending

Question 12

What skin sense raptors are enervated by A beta fibers?

Answer 12

Merkels disk
Messiness corpuscle
Pacinian corpuscle
Ruffians ending

Question 13

What skin receptors are innovated by a delta/C fibers

Answer 13

Free nerve ending and hair folic al receptor

Question 14

What receptor responds to sideways shear force ?

Answer 14

Messiers corpuste

Question 15

What ceptors are stimulated by skin deformation(light)

Answer 15

Merkel

Question 16

What replorsare sense to deep dermal pressure?

Answer 16

Pa cinian corpuste

Question 17

What raptor is stimulate by skin stretching via tension in collagen

Answer 17

Ruffini

Question 18

What size is the receptive field for MeiSS her and merkile receptors?

Answer 18

Small both small

Question 19

What is the size of the receptive field for the Pacin ion and Ruffini receptors?

Answer 19

Large for both

Question 20

What does the frequency of firing related to in slow adapting mechanoceptors?

Answer 20

The frequency of ap firing ng is related to the depth of the touch

Question 21

What does the frequency of firing related to in fast adapting mechanoceptors?

Answer 21

The frequency of firing is related to the speed of the touch.

Question 22

How long do ap keep firing after the indentation in fast adapting mechanocpters?

Answer 22

Fast adapting nedhanocopters only fire ap at the start of on indentation

Question 23

How long do ap s fire for show adapting fibres after indentation?

Answer 23

For the whole time the stimulus is present

Question 24

What transducer molecule are used in the messier and Merkel receptors? What rough sensation do they both transducer?

Answer 24

Both use piezo 2 and respond to light touch

Question 25

What's the machismo of action for opening piezo 2

Answer 25

The triskelion structure is in the membrane plane, when the membrane deforms then the cap regain deforms and the poor opens

Question 26

Give an example one of each experimental method,ex vivo culture and benaviral experiments that conform peizo 2 me ho a p fur is a

Answer 26

In diseased nerve only 50% of AB fibres t of peico two responded light touch, behavoral asslyony 20% of peízo 2 h0 with G draw paw when touched

Question 27

What chemosensor is on adeltand C fibres

Answer 27

Trp channels