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Neurology Year 3 > Anatomy > Flashcards

Flashcards in Anatomy Deck (111)
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1

What is a collection of nerve cell bodies in the CNS called?

Nucleus

2

What is a collection of nerve cell bodies in the PNS called?

Ganglion

3

What do dendrites do?

Transport signal towards cell body

4

What do axons do?

Transport signals away from the cell body

5

What cells produce the myelin sheath in the PNS?

Schwaan cells

6

What cells produce the myelin sheath in the CNS?

Oligodendrocytes

7

What neuronss are usually motor polar?

Motor efferent
Skeletal muscles

8

What neurons are usually unipolar?

Sensory afferent

9

Where is the cell body located in unipolar neurons?

PNS

10

Where is the cell body located in multipolar neurons?

CNS

11

What are nerves?

Bundles of neurons surrounded by connective tissue and blood vessels.

12

What are the two types of nerves?

Single or mixed modality

13

What does it mean to be a mixed modality nerve?

Mixture of somatic motor somatic sensory and sympathetic grouped together.

14

Sympathetic outflow is...

Thoracolumbar T1 to L2

15

Where are sympathetic cell bodies located ?

Lateral Horn

16

Upon leaving the spinal column where do the sympathetic neurons pass?

Anterior Rami
Spinal Nerve
White Rami
Sympathetic Trunk

17

What are the four routes presynaptic axons take in the sympathetic trunk?

1. Ascend then synapse
2. Synapse at level of entry
3. Descend and then synapse
4. Pass through sympathetic trunk to synapse at prevertebral ganglia.

18

If a sympathetic nerve synapses within the sympathetic trunk it...

Synapses at paravertebral ganglia

19

If a sympathetic nerve synapses outside of the sympathetic trunk it....

Synapses at prevertebral ganglia

20

What make up spinal nerves?

Somatic motor sensory and sympathetic neurones

21

In order to supply abdominopelvic organs where do sympathetic neurones synapse?

Prevertebral ganglia

22

List the 4 Prevertebral ganglia associated with the abdominopelvic organs?

Celiac Ganglion
Aorticorenal ganglion
Superior Mesenteric Ganglion
Inferior Mesenteric Ganglion

23

Roughly where does the celiac ganglion innovate?

Foregut

24

Roughly where does the aorticorenal ganglion innovate?

Kidneys

25

Roughly where does the SMG innovate?

Midgut

26

Roughly where does the IMG innovate?

Hindgut
Pelvic and Perineal plexus

27

Where do sympathetic neurones directly synapse onto the target organ?

Adrenal Medulla on the kidney

28

Parasympathetic output is....

Craniosacral

29

What cranial nerves are parasympathetic?

CN III Oculomotor
CN VII Facial
CN IX Glossopharyngeal
CN X Vagus

30

At 4 weeks what are the three layers that make up the neuro system?

Prosencephalon
Mesencephalon
Rhombencephalon