Week 9: peripheral nerve supply Flashcards
1
Q
Nervous system functions
A
- Control centre and communication network
- Senses, interprets and responds to changes
2
Q
Sensory neurons
A
transmit information about conditions in and out of the body
3
Q
Motor neurons
A
transmit information that controls the activity of muscle and glands
4
Q
Glial/support cells
A
provide protection and nutrition
5
Q
Central nervous system (CNS)
A
- Brain and co-located structures
- Spinal cord
- All protected by bones of the axial skeletons
6
Q
Where do cranial nerves emergy
A
brain
brainstem
7
Q
Cranial nerves supply
A
- Supply the musculoskeletal structures of the head and neck
- Supply the viscera of the thorax and abdomen
8
Q
Spinal nerves emergy from
A
spinal cord
9
Q
Spinal nerves supply what
A
Supply the structures of the trunk wall and the limbs
10
Q
How many pairs of cranial and spinal nerves
A
12 cranial 31 spinal
11
Q
Dorsal ramus
A
distributed to the back muscles and skin
12
Q
Ventral ramus
A
distributed to anterior, lateral trunk muscles & skin
13
Q
Ventral rami
A
distributed into the limbs to supply the muscles and skin
14
Q
Sensory distribution
A
- To skin: sensation
(e.g. hot, cold, pain, touch, pressure) - To joints: sensation of joint position (proprioception)
15
Q
Motor distribution
A
- To muscles: turns the muscle on & makes it contract (concentric, isometric or eccentric)
- To glands: increases secretion from gland (usually): supply to sweat glands produces
