Brachial Plexus Flashcards Preview

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Flashcards in Brachial Plexus Deck (27)
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1
Q

Nerve plexus innervates body wall and limbs with:

A

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

2
Q

Nerve plexuses are formed by?

A

Ventral rami of spinal nerves

3
Q

What do nerve plexuses do?

A

Network with each other

4
Q

Cervical plexus innervates what region?

A

Neck

5
Q

Brachial plexus innervates what region?

A

Upper limb

6
Q

Lumbar plexus innervates what region?

A

Abdominal

7
Q

Sacral plexus innervates what region?

A

Lower limb

8
Q

What is the function of the brachial plexus?

A

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

9
Q

Brachial plexus is formed by?

A

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

10
Q

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

A

In ventral grey, ventral horn of cord

11
Q

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

A

In the dorsal root ganglia outside of the CNS

12
Q

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

A

C5 (Rhomboids)

13
Q

What ventral rami form the Long Thoracic Nerve?

A

C5, C6, C7

14
Q

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

A

C5 and C6

15
Q

What trunk gives rise to the Suprascapular Nerve?

A

Upper (superior) trunk

16
Q

What ventral rami forms the Middle Trunk?

A

C7

17
Q

What ventral rami form the Lower (Inferior) Trunk?

A

C8 and T1

18
Q

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

A

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

19
Q

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

A

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

20
Q

What trunks turn into the medial cord?

A

Lower trunk (C8, T1)

21
Q

*III.

A

*III.

22
Q

Segmental innervation of the Musculocutaneous Nerve?

A

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

23
Q

Segmental innervation of the Ulnar Nerve?

A

C8, T1

24
Q

Segmental innervation of the Median Nerve?

A

C6, C6, C8, T1

25
Q

Segmental innervation of the Radial Nerve?

A

C5, C6, C7, C8

26
Q

What defines peripheral sensory nerve supply?

A

Dermatones

Sensory distribution

27
Q

Paresis is…

A

Weakening…