Pacinian Corpuscle

Question 1

What is a stimulus?

Answer 1

A detectable change in the environment
Changes can be detected by cells (receptors)

Stimulus -> receptor -> coordinator -> effect -> response

Question 2

What does organisms responding to stimuli increase their chance of?

Answer 2

Survival

Question 3

What does the PNS consist of?

Answer 3

Receptors, sensory and motor neurones

Question 4

What does the CNS consist of?

Answer 4

The brain and spinal cord

Question 5

What does each receptor responding only to specific stimuli do?

Answer 5

The stimulation of this receptor leads to a generator potential being established- causing a response

Question 6

What type of receptor are the PC?

Answer 6

Mechanoreceptors- they detect mechanical stimuli e.g. pressure and vibrations
Found in the skin

Question 7

What is the PC structure?

Answer 7

single sensory neurone wrapped in layers of connective tissue (lamellae) separated by gel

Question 8

What does the PC have in its plasma memr