L21 - anatomy of nervous system Flashcards
1
Q
CNS
A
brain and spinal cord
2
Q
peripheral nervous system
A
all the other nerves in rest of body
3
Q
afferent neurones
A
- nerve cells receive sensory information from periphery
- provide input to the CNS
- e.g sensory neurones
(periphery to CNS)
4
Q
efferent neurones
A
- output coming from CNS to periphery
- somatic (motor) and autonomic output
5
Q
what is somatic (motor) output?
A
movement of skeletal muscles
6
Q
autonomic (visceral) output?
A
- how brain controls internal organs
- subconscious control
-e.g HR, BR, respiration
7
Q
spinal nerves
A
gaps in vertebrae where nerves go through
8
Q
touch and visceral input
A
- mechanoceptors (in skin for touch)
- prorioceptors (skeletal muscle)
- nociceptors (pain)
- thermoreceptors (temp)
- chemoceptors (chemicals)
9
Q
types of afferent input
A
- touch
- sight
- sound
- smell
- taste
10
Q
dorsal
A
back part of spinal cord
11
Q
ventral
A
front
12
Q
where does information go to the in spinal cord?
A
dorsal part
- firstly passes through dorsal root ganglion (specialised axons)
13
Q
spinal efferents
A
- e.g. monosynaptic reflex
14
Q
muscle stretch (monosynaptic spinal reflex)
A
- no conscious thought
- provides output back out to periphery
- example of proprioceptors
15
Q
what is white matter?
A
where axons go through
