7. Motor systems 1: reflexes, 'Sensorimotor Integration'

Question 1

Describe monosynaptic reflex and how it is used

Answer 1

its only has one synapse that causes the reflex.
-you can do this by the knee jerk method

Question 2

Describe the flexion withdrawal reflex and how it is used

Answer 2

its a noxious stimulus detected by nociceptor
-used when you touch something hot and your hand reflexes away.

Question 3

Describe the crossed extension reflex and how it is used

Answer 3

Activated simultaneously when a flexion reflex is initiated in a leg.
- used when you step on something sharp and after the flexion reflex Is initiated, the cross extensor reflex is activated on the other leg to support the body.

Question 4

describe how gain of reflex can be used

Answer 4

to protect your body from the harm

Question 5

Describe the influence of descending systems on spinal reflexes

Answer 5

it can change the pattern of your spinal reflex

Question 6

Describe how the loss of descending input can alter spinal reflexes

Answer 6

it can cause increased reflexes aka hypperreflexia

Question 7

Explain how someone with spinal cord injury, or cerebral stroke can have paralysis, and yet also have too much muscle contraction

Answer 7

this is because there is damage of motor system above the level of the reflex arc

Question 8

Define Spasticity

Answer 8

increased muscle tone due to hyperreflexia

Question 9

Define Hyperreflexia

Answer 9

this is when there is a increased reflexes