Sensory Receptors

Question 1

Cutaneous receptors

Answer 1

Nerve endings protected by a capsule

Question 2

Sensory transduction in the skin

Answer 2

Transduction process in all sensory endings involves opening or closing of ion channels

Question 3

Frequency coding

Answer 3

The bigger the stimulus, the greater the receptor potential, and therefore the higher the frquency of action potentials
High frequency equals high stimulus intensity

Question 4

Efferent control of spindle function

Answer 4

When an agonist muscle contracts, the spindle also contracts and so output is decreased
Causes antagonistic muscle to lengthen and those muscle spindles increase their outflow of action potentials

Question 5

Golgi tendon organs

Answer 5

Monitor muscle tension
Nerve muscles intermingled with the tendons at the ends of muscles
Act as stretch receptors and monitor the stretch in a tendon
Since tendons are inelastic, the muscles must develop tension to stretch them, and so they measure muscle tension

Question 6

Function of muscle spindle

Answer 6

Monitors muscle length and rate at which it changes