nervous system Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

peripheral nervous system (ganglia)

A

groups of nerve cell bodies outside brain and spinal cord

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

peripheral nervous system

A

nerve fibres carry information to and from CNS
12 pairs of cranial nerves
mixed nerves: carrying info into and out of brain
31 pairs of spinal nerves connected to spinal cord by 2 roots

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

ventral root

A

axons of motor neurons that have cell bodies in grey matter of spinal cord

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

dorsal root

A

axons of sensory neurons with cell bodies in dorsal root ganglion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

divisions of PNS (sensory/motor)

A

Afferent (sensory) :carries impulses into CNS from sensory nerve receptors
Efferent (motor): carries impulses AWAY from CNS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

efferent somatic and autonomic respnsbility

A

somatic: cns to skeletal muscle
autonomic: CNS to heart, involuntary glands and muscle (parasympathetic and sympathetic)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Autonomic Nervous System

A

Controls internal environment and involved mechanisms of it

- Pathway involves 2 neurons, sympathetic and parasympathetic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

ANS neutrotransmitter

A

acetylcholine or noradrenaline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

parasympathetic

A

Maintains body in quiet conditions
- Acetylcholine
‘rest or digest’

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

sympathetic

A

Strenuous Activity
- Noradrenaline
‘fight or flight’

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

somatic

A

One motor neuron from CNS; no synapses or ganglion

Responds to external environment; voluntary and involuntary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Functional Areas

A

Sensory; interpret impulses from receptors
Motor; controls muscular movements
Association; intellectual and emotional processes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Protection of the CNS

A

bone, meninges, cerebrospinal fluid

their functions are - shock absorption, transport, support

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

meninges

A
  • outer: dura -> tough fibers attached to bone
  • middle: arachnoid -> loose mesh of fiber
  • inner: pia ->blood vessels and connects to surface of CNS
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Cerebrospinal fluid

A
  • contains cells, proteins, urea, and salts
  • formed from blood
  • carries nutrients towards and waste away
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

afferent somatic and visceral

A
  • Somatic: nerve cells from body

- Visceral: impulses from internal organs