Types of Reflexes Flashcards
Stretch or myotatic reflex is a ____, ____ reflex
-simple reflex; segmental
In the stretch or myotatic reflex, a muscle stretch activates the _______, and
monosynaptically excites the _____ innervating this muscle
Muscle spindle organ
motor neuron
The stretch or myotatic reflex uses the ____sensory neuron to innervate the spindle
Ia afferent
a stretched muscle will reflexively _____
contract
the \_\_\_\_\_ (patellar reflex) is stretch reflex of quadriceps
knee jerk
In the stretch reflex, spindle activity signals what two things?
muscle length and rate of stretch
In the stretch reflex, what kind of inhibition of antagonist muscles through inhibitory interneurons prevents opposition to stretch?
reciprocal, disynaptic inhibition
In the stretch reflex, excitation is to the same muscle
and its __
synergists
Muscle spindle organs lie in
____ with striated muscle
fibers
parallel
Flexion, or withdrawal reflex is a _____response to?
-defensive,
stimulus pain or strong stimulation
The flexion, or withdrawal reflex features ________
excitation of ____and inhibition of ______on ipsilateral side; opposite effect on
contralateral side
polysynaptic
flexors
extensors
The flexion, or withdrawal reflex, features polysynaptic excitation of flexors, and inhibition of extensors on ______ side
Ipsilateral
The flexion, or withdrawal reflex, features polysynaptic inhibition of flexors, and excitation of extensors on ______ side
Contralateral
True or false, the flexion reflex produces movement if it’s strong enough
True
Scratch reflex is _____ and _____
suprasegemental and polysynaptic
