1 Flashcards
1
Q
What are the 2 parts of the nervous system, what do they consist of?
A
1) central nervous system (CNS)
Brain, spinal cord
2) peripheral nervous system (PNS)
•Cranial nerves from the brain
•Spinal nerves from the spinal cord
2
Q
What does CNS do?
A
Controls all body activities
3
Q
What the meninges?
A
The 3 layers that cover the brain and spinal cord
4
Q
What are the 3 layers of meanings?
A
- Outer layer > Dura mater
- Middle layer > Arachnoid
- Inner layer > Pis mater
5
Q
What is the function of the meninges?
A
- protection to the brain and spinal cord
- acts as a barrier against bacteria and microorganisms
6
Q
What’s the function of PNS?
A
Carry massages to and from the CNS
7
Q
PNS has 2 types of nervous which are?
A
- sensory nerves (in)
- motor nerves (out)
8
Q
What does PNS consist of?
A
- 12 pairs of cranial nerves
- 32 pairs of spinal nerves
- 8 pairs of cervical
- 12 pairs of thoracic
- 5 pairs of lumbar
- 5 pairs of sacral
- 1 pair of coccygeal
9
Q
PNS is subdivided into what?
A
- Somatic nervous system (voluntary)
* Autonomic nervous system (involuntarily)
10
Q
What is the single longest nerve in the body?
A
Sciatic nerve
