9 (C) Reflexes Flashcards
Which is faster, polysynaptic or monosynaptic?
Monosynaptic
The myotatic stretch reflex is used in what? (3)
Posture // Antigravity // Movement
What type of fibres are used in the myotatic stretch reflex
1a Afferent fibres
Alpha motor neuron efferent
What response does the myotatic stretch reflex produce?
think patella strike
Flexion inhibition
Extension excitation
Inverse myotatic reflex is otherwise known as what?
Golgi Tendon Reflex
What does the Golgi Tendon Reflex (inverse myotatic reflex) prevent?
Overexcitation of muscles + tendon damage from overloading
What fibres do inverse myotatic reflex use?
1b afferent
in the arm, the inverse myotatic reflex leads to ….. of the arm
Relaxation
in the leg, inverse myotatic reflex leads to …. of the antagonist muscle.
What happens to the agonist muscle?
Contraction of antagonist muscle
relaxation of the agonist muscle
The flexor withdrawal reflex helps us what?
Maintain balance // prevent damage from noxious stimuli
What happens in the flexor withdrawal reflex to the muscles on the ipsilateral side of the noxious pain?
Contraction of the flexors ipsilateral side
Relaxation of the extensors on ipsilateral side
What happens in the flexor withdrawal reflex to the muscles on the contralateral side of the noxious pain?
Relaxation of the flexors on contralateral side
Contraction of the extensors on contralateral side
What type of fibres are present in the withdrawal reflex?
A-delta + C afferents
