How Nerves Work 1 Flashcards
1
Q
What structures are part of the nervous system?
A
- The brain
- The spinal cord
- The peripheral nerves
2
Q
What are the subdivisions of the nervous system?
A
- Somatic nervous system
- Autonomic nervous system
- Enteric nervous system
3
Q
What are the parts of the brain?
A
- Meninges
- Gyrus and sulcus
- Cerebellum
- Cerebrum
- Diencephalon
- Brainstem
4
Q
What is the cerebrum made up of?
A
- Frontal lobe
- Temporal lobe
- Parietal lobe
- Occipital lobe
5
Q
What is the diencephalon made up of?
A
- Thalamus
- Hypothalamus
6
Q
What is the brainstem mad up of?
A
- Midbrain
- Pons
- Medulla oblongata
7
Q
How many spinal nerves are there at each level?
A
- 8 cervical
- 12 thoracic
- 5 lumbar
- 5 sacral
- 1 coccygeal
- 31 in total plus 12 pairs of cranial nerves
8
Q
What is a ganglion?
A
A set of cell bodies
9
Q
Where are the cell bodies of sensory fibres?
A
Ganglion
10
Q
Where are the cell bodies of motor fibres?
A
Ventral horn
11
Q
What is inside the white matter?
A
Axons
12
Q
What is inside the grey matter?
A
Cell bodies
13
Q
What happens at the dorsal horn?
A
Afferent sensory fibres come in
14
Q
What happens at the ventral horn?
A
Efferent motor fibres go out
15
Q
What components make up a neuron?
A
- Cell body (soma)
- Dendrites
- Initial segment (axon hillock)
- Axon
- Axon (presynaptic terminals)
