Chapter 13b - reflexes Flashcards
1
Q
what is a stretch reflex?
A
cause muscle contraction in response to muscle length
ensures muscle length stays constant
- maintain posture, balance, and movement
2
Q
types of spinal reflexes
A
stretch reflex, withdrawal reflex, flexor reflex
3
Q
stretch reflex receptor
A
muscle spindles
4
Q
is the stretch reflex monosynaptic or polysynaptic? ipsilateral or contralateral?
A
mono
contralateral
5
Q
what is an example of a stretch reflex?
A
knee-jerk reflex
6
Q
what is reciprocal innervation?
A
process where contraction of one muscle group automatically leads to the relaxation of its antagonist muscle which allows for smooth coordinated movement at a joint
7
Q
flexor reflex
A
- aka withdrawal reflex
- biceps will be contracted and triceps inhibited if we do reciprocal innervation
8
Q
cross extensor reflex
A
