T2L3 Physiology Of Spinal Cord Flashcards
1
Q
What is a motor unit
A
Single alpha motor neruron and the muscle fibre it innervates
2
Q
What are the 2 proprioceptive sensory organs?
A
Muscle spindles
Golgi tendon reflexes
3
Q
Describe the monosynaptic reflex pathway
A
One synapse involved between sensory and motor neuron
Passive stretch detected - negative feedback loop to regulate muscle length
4
Q
Give and describe an example of a polysynaptic pathway
A
Flexion reflex
Activation of the spinal cord local circuit
Causing flexion
But also compensatory to extend leg
5
Q
Anterior cord syndrome
A
Lesion to spinal cord
Damage to dorsal white columns
