Introductuon to Anatomy of Muscles and Nerves Flashcards
1
Q
What is the nervous system split up into?
A
Structural division
- CNS (Brain and spinal cord)
- PNS (12 cranial and 31 spinal nerves
Functional division
- somatic (voluntary)
- autonomic (involuntary)
~ sympathetic
~ parasympathetic
2
Q
Where do nerves supplying upper and lower limbs originate from?
A
Plexuses
3
Q
Fibre distribution in spinal nerves
A
Sensory/afferent
Motor/efferent
4
Q
Are roots sensory or motor
A
EITHER
5
Q
Are spinal nerves sensory or motor
A
BOTH
6
Q
Is rami sensory or motor?
A
BOTH
7
Q
What is a motor unit?
A
One motor neuron supplying more than one muscle fibre
8
Q
What pathway do motor fibres synapse?
A
AUTONOMIC
9
Q
Define myotomes
A
A group of muscles innervated by single spinal nerve root
