Lecture 6: Reflexes

Question 1

what is a reflex?

Answer 1

simplest form of motor activity

Question 2

which neurones are involved in a reflex action every time?

Answer 2

sensory and motor

Question 3

where do afferent neurones carry information

Answer 3

to the CNA

Question 4

what does an efferent neurone do?

Answer 4

transmits impulses to the effector (muscles)

Question 5

what does the spinal cord receive sensory input from?

Answer 5

proprioceptors

Question 6

what does a proprioceptor do?

Answer 6

provides information on the position of the body

Question 7

what are the 3 types of proprioceptors?

Answer 7

muscle spindles, Golgi tendon organs and he pacinian corpuscle

Question 8

Are motor neurones excitatory or inhibitory?

Answer 8

excitatory

Question 9

COME BACK

Answer 9

TO IT

Question 10

Whats a monosynaptic reflex consist of ?

Answer 10

Consists of only one synapse

Question 11

Why have a muscle stretch reflex ?

Answer 11

Help maintain posture

Question 12

What’s a monosynaptic reflex ?

Answer 12

Muscle stretch reflex

Question 13

Is the monosynaptic stretch reflex useful clinically if so why?

Answer 13

Yes, this is because

Question 14

What do muscle spindles do ?

Answer 14

they send sensory info on muscle stretch to CNS, providing brain with information for regulating muscles involved in movement