Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

3 Anatomy > Anatomy of the PNS > Flashcards

Anatomy of the PNS Flashcards

1
Q

name the 2 types of neuron

A

multipolar

unipolar

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

main function of a dendrite

A

increase surface area of the nervous system

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

what do schwann cells do?

A

produce myelin in the PNS not the CNS

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

what is the main difference between multipolar and unipolar neurons?

A

multipolar have 2 or more dendrites

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

where would you find multipolar neruons?

A

skeletal muscle

ANS

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

in a multipolar neuron, the cell body will be located in the __ and the axon will be located in the ___

A

CNS

PNS

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

where is the cell body of a postsynaptic neuron located?

A

in a ganglion, not the CNS!

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

in a unipolar neuron the cell body is located….

A

the dorsal root ganglion in the PNS not the CNS

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

what makes up a nerve

A

groups of axons

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

how is a mixed modality nerve different from a single modality nerve?

A

mixed contains different types of nerve in 1 eg somatic motor and sympathetic (think trigeminal)

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

name the cranial nerves that come off the midbrain

A

CN III

CN IV

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

name the cranial nerves that come off the pons

A

CN V only

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

name the cranial nerves that come off the medulla

A

CN IX
CN X
CN XII

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

spinal nerves are found…

A

in the intervertebral foraminae ONLY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

are the anterior or posterior rami of the spinal nerves larger

A

anterior are larger

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

from the horn to the body wall name the different stages of a motor spinal nerve

A 
horn
rootlet
root
spinal nerve
ramus
(sensory would be this backwards)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

there are _ cervical nerves

A

8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

all sensory axons pass from the spinal nerve to the ___ root and eventually into the __ horn of the spinal cord

A

posterior

posterior

19
Q

all motor axons follow the ___ route to the body wall

A

anterior (eg from anterior horn to anterior root etc)

20
Q

define dermatome

A

area of skin supplied with sensory innervation from a single spinal nerve

21
Q

define myotome

A

the skeletal muscles supplied with motor innervation from a single spinal nerve

22
Q

the male nipple is at the level of __ dermatome

A

T4

23
Q

the umbilicus is at the level of _ dermatome

A

T10

24
Q

C2-C4 dermatomes cover what areas?

A

posterior scalp, neck and shoulder

25
Q

C5-T1 dermatomes cover what area(s)?

A

upper limb

26
Q

what nerves make up the cervical plexus?

A

C1-C4

27
Q

___ rami from adjacent spinal nerves make up nerve plexuses?

A

anterior

28
Q

spinal nerves do not contain parasympathetic fibres T or F

A

T

29
Q

lumbar plexus is made up of what nerves

A

L1-4

30
Q

what sympathetic nerve levels have lateral horns?

A

T1-L2 aka only the thoracolumbar section

31
Q

presynaptic sympathetic axons will pass through the ___ root of spinal nerves

why is this?

A

anterior

they’re motor as they’re going down to the ganglion

32
Q

where do presynaptic symp axons to the heart synapse?

A

T1 (the cervical parasympathetic ganglia)

33
Q

where do the postsynaptic axons to the heart go?

A

cardiopulmonary splanchnic nerves

34
Q

why do you feel pain in your shoulder with diaphragmatic pain?

A

myotome for C3,4,5 is in diaphragm but dermatome is in shoulder

35
Q

synapse location of lung presynaptic axons

A

upper thoracic PARAvertebral ganglia

36
Q

general synaptic location of abdominopelvic organs

A

PREvertebral ganglia

37
Q

where do the axons of the adrenal medulla synapse?

A

on the adrenal medulla

38
Q

define plexus

A

intertwining of the ANTERIOR rami of spinal nerves

39
Q

which nerve transmits the parasympathetic axons of the neck chest and abdo (up to midgut)?

A

vagus

40
Q

what nerves carry the parasympathetic axons below the midgut?

A

sacral spinal nerves

41
Q

anterior part of spinal cord = motor T or F

A

T, think “AM”

42
Q

what does the rami communicans do?

A

connects the ANTerior rami of a spinal nerve to the sympathetic chain

43
Q

name the 2 different types of rami communicans and what they do

A

white RC: carries the pre-synaptic fibres of the anterior rami to a ganglion to synapse

grey RC: brings the now post-synaptic fibre back to the spinal cord to fulfil its function

44
Q

where do the ganglia of the abdominopelvic organs branch off?

A

at the level their respective arteries leave the abdo aorta

3 Anatomy (20 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions