Brachial Plexus Flashcards Preview

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Flashcards in Brachial Plexus Deck (27):
1

Nerve plexus innervates body wall and limbs with:

Motor supply
Somatosensory (somatic) (proprioception) pain, temp, touch
Autonomic - sympathetic only; energy consuming. sweat/sebaceous oil glands, smooth muscle, etc.

2

Nerve plexuses are formed by?

Ventral rami of spinal nerves

3

What do nerve plexuses do?

Network with each other

4

Cervical plexus innervates what region?

Neck

5

Brachial plexus innervates what region?

Upper limb

6

Lumbar plexus innervates what region?

Abdominal

7

Sacral plexus innervates what region?

Lower limb

8

What is the function of the brachial plexus?

Motor/sensory/autonomic supply to upper limb (sympathetic only)

9

Brachial plexus is formed by?

Ventral rami of C5-C8, T1 (causes cervical enlargement in cord)

10

Where do the motor cell bodies of the brachial plexus lie?

In ventral grey, ventral horn of cord

11

Where do the sensory cell bodies of the brachial plexus lie?

In the dorsal root ganglia outside of the CNS

12

What ventral rami does the Dorsal Scapuli Nerve come off of?

C5 (Rhomboids)

13

What ventral rami form the Long Thoracic Nerve?

C5, C6, C7

14

What ventral rami come together to form the Upper (Superior) Trunk?

C5 and C6

15

What trunk gives rise to the Suprascapular Nerve?

Upper (superior) trunk

16

What ventral rami forms the Middle Trunk?

C7

17

What ventral rami form the Lower (Inferior) Trunk?

C8 and T1

18

What trunks turns into the anterior division of the brachial plexus?

Upper trunk (C5, C6) and middle trunk (C7)

19

What trunks turn into the posterior division of the brachial plexus?

Upper trunk (C5, C6), middle trunk (C7) and lower trunk (C8, T1)

20

What trunks turn into the medial cord?

Lower trunk (C8, T1)

21

*III.

*III.

22

Segmental innervation of the Musculocutaneous Nerve?

C5, C6, C7 (segmental nerve supply for peripheral nerves)

23

Segmental innervation of the Ulnar Nerve?

C8, T1

24

Segmental innervation of the Median Nerve?

C6, C6, C8, T1

25

Segmental innervation of the Radial Nerve?

C5, C6, C7, C8

26

What defines peripheral sensory nerve supply?

Dermatones
Sensory distribution

27

Paresis is...

Weakening...