Structure of a spinal nerve Flashcards
1
Q
What is the anterior root?
A
- Consists of motor neurons.
- Cell body of these are in the front.
2
Q
How else is the anterior root known as?
A
The ventral root.
3
Q
What is the posterior root?
A
- Consists of sensory neurons.
- Cell bodies are in the dorsal root ganglion.
4
Q
What are the two main branches?
A
- Dorsal primary rami.
- Ventral primary rami.
5
Q
What does the dorsal primary rami supply?
A
- muscle.
- skin.
- bones.
6
Q
What does the ventral primary rami supply?
A
- everything else.
- side + front of the body.
7
Q
What is white matter?
A
Tracts of myelinated neurons.
8
Q
What is grey matter?
A
Tracts of unmyelinated neurons.
9
Q
Where does the lumbosacral plexus begin?
A
At the ventral ramus.
