sensory receptors 1

Question 1

what do meissner’s corpuscles detect?

Answer 1

touch(dynamic deformation)
detect slipping objects
also detect low frequency vibration

Question 2

what type of skin are meissners corpuscles found on?

Answer 2

glabourous skin types (e.g. fingers, lips)

Question 3

what type of fibre are meissners corpuscles composed of?

Answer 3

Aβ

Question 4

what do Merkel’s discs detect?

Answer 4

static touch and pressure

Question 5

what other type of sensation do merkels discs and meissners corpuscles detect when working together?

Answer 5

texture

Question 6

what type of cell are merkels discs?

Answer 6

specialised epithelial cells

Question 7

are merkels discs fast adapting or slow adapting?

Answer 7

slow adapting

Question 8

what type of sensation does pacinuian corpuscles detect?

Answer 8

high frequency vibration

Question 9

where are pacinian corpuscles found?

Answer 9

deep in the dermis

Question 10

what do Ruffini corpuscles detect?

Answer 10

stretch

Question 11

are ruffians corpuscles slowly adapting or fast adapting?

Answer 11

slow adapting

Question 12

what type of pain do C fibre nociceptors detect?

Answer 12

hot/cold burning ache

Question 13

what type of pain do Aδ nociceptor fibres detect?

Answer 13

sharp pricking pain

Question 14

what type of fibres are attached to glabourous type hair follicles?

Answer 14

Aβ

Question 15

what type of fibres are attached to ‘down’ type hair follicles?

Answer 15

Aδ

Question 16

what feature of generator potentials determine the strength of the signal they convey?

Answer 16

frequency

Question 17

what is the difference between generator potentials and postsynaptic potential?

Answer 17

generator potentials last as long as the receptor is stimulated and the amplitude is determined directly by the intensity of the sensory stimulus (not NT conc)