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Flashcards in PNS Deck (33)
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1
Q

What are the 2 types of neuron?

A

multipolar and unipolar

2
Q

What type of neuron is found in the PNS?

A

unipolar

3
Q

What are multipolar neurons involved in?

A

skeletal muscle and ANS

4
Q

What are unipolar neurons invovled in?

A

sensory information

5
Q

Where are spinal nerves found?

A

intervertebral foramina

6
Q

What does the posterior rami supply?

A

posterior body wall

7
Q

What doe sthe anterior rami supply?

A

anterolateral body wall

8
Q

Where do sensory axons travel from the spinal nerve?

A

posterior roots–posterior rootlets–posterior horn

9
Q

What is found within the dorsal root ganglion?

A

cell bodies of primary afferent neurones

10
Q

How do the motor axons pass into the spinal nerves?

A

anterior horn–anterior rootlets–anterior root

11
Q

What is found within each spinal nerve?

A

general sensory; somatic motor; sympathetics

12
Q

What is a dermatome?

A

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

13
Q

What is a myotome?

A

skeletal muscles supplied from a single spinal nerve

14
Q

What dermatomes make up the upper limb?

A

C5-T1

15
Q

What dermatomes make up the lower limb, gluteal region and perineum?

A

L2-Co1

16
Q

What are nerve plexuses made up of?

A

mixed anterior rami from spinal nerves

17
Q

What makes up the cervical plexus?

A

C1-C4

18
Q

What makes up the brachial plexus?

A

C5-T1

19
Q

What makes up the lumbar plexus?

A

L1-L4

20
Q

What makes up the sacral plexus?

A

L5-S4

21
Q

How do sympathetics reach the spinal nerves?

A

anterior roots and rootlets

22
Q

How do sympathetics reach the head and neck?

A

hitch a rid on the ICA and ECA

23
Q

How do parasympathetics reach the paravertebral ganglia?

A

via rami communicans

24
Q

What is the difference between white and grey rami communicans?

A

white- to go to ganglia, grey- from ganglia back to rami

25
Q

Where do sympathetics to the heart synapse?

A

T1/cervical paravertebral ganglia

26
Q

After synapsing at the cervical/T1 ganglia, how do sympathetics get to the heart and lungs?

A

in cardiopulmonary splanchnic nerves

27
Q

Where do sympathetics to the lungs first synapse?

A

upper thoracic paravertebral ganglia

28
Q

Where do sympathetics to the abdominopelvic organs synapse?

A

prevertebral ganglia

29
Q

Where do sympathetics to the foregut synapse?

A

celiac ganglion of the celiac plexus

30
Q

Where do sympathetics to the kidney synapse?

A

aorticorenal ganglion

31
Q

Where do sympathetics to the midgut synapse?

A

superior mesenteric ganglion of SM plexus

32
Q

Where do sympathetics to the hindgut and pelvic/perineum synapse?

A

inferior mesenteric ganglion of IF plexus

33
Q

What cranial nerves do parasympathetics travel via?

A

III; VII; IX and X