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Brachial Plexus > Anatomy > Flashcards

Anatomy Flashcards

1
Q

What spinal nerves contribute to the brachial plexus?

A

C5, C6, C7, C8, T1

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2
Q

What are the sections of the brachial plexus?

A

Roots, Trunks, Divisions, Cords, Branches

Read the damn cadaver book

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3
Q

How many trunks are there / names?

A

3

Superior, middle, inferior

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4
Q

What are the divisions?

A

anterior and posterior

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5
Q

How are cords named?

A

named by position relative to the axillary artery

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6
Q

How many cords are there / names?

A

3

lateral, posterior and medial

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7
Q

Which part of spinal nerves contribute to the plexus?

A

anterior rami

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8
Q

Main branches of plexus?

A

5

Axillary, radial, musculocutaneous, median and ulnar

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9
Q

Long thoracic nerve from what nerve roots?

A

C5, C6 and C7

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10
Q

What does the long thoracic nerve supply?

A

Serratus anterior

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11
Q

Which trunk gives off the suprascapular nerve?

A

Superior trunk

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12
Q

What does the suprascapular nerve supply?

A

supraspinatus and infraspinatus

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13
Q

Nerve supply to subscapularis

A

Upper and lower subscapular nerves

from posterior cord

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14
Q

What branches does the posterior cord give?

A

Radial, axillary

Upper and lower subscapular nerves, thoracodorsal nerve

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15
Q

Nerve supply to latissimus dorsi

A 
Thoracodorsal nerve 
(from posterior cord)
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16
Q

What branches do the lateral and medial cords give?

A

musculocutaneous, median and ulnar

M shape

17
Q

What is the brachial plexus?

A

a network of nerve fibres supplying the upper limb

18
Q

Where is the brachial plexus found?

A

Begins at the root of the neck, passes through the axilla and into the upper limb

19
Q

Axillary nerve - sensory supply to…

A

Badge patch area

20
Q

Axillary nerve - motor supply to…

A

Deltoid and teres minor

21
Q

Radial nerve - sensory supply to…

A

Posterior forearm, lateral dorsal surface of hand and lateral 3 +1/2 digits up to PIP joints

22
Q

Radial nerve - motor supply to…

A 
Posterior arm - triceps
Posterior forearm (and lateral compartment)
23
Q

Musculocutaneous nerve - sensory supply to…

A

Lateral surface of the forearm

24
Q

Musculocutaneous nerve - motor supply to…

A

Anterior arm

coracobrachialis, biceps, brachialis

25
Q

Musculocutaneous nerve - movements

A

Flexion at shoulder and elbow

supination of forearm (biceps)

26
Q

Median nerve - sensory supply to…

A

palm of hand to half of 4th digit

dorsal surface - skin over the lateral 3 + 1/2 digits from PIP joints to tip of fingers

27
Q

Median nerve - motor supply to…

A

most muscles in forearm (except FCU and 1/2 of FDP)

LOAF muscles in hand

28
Q

Ulnar nerve - sensory supply to…

A

medial fingers (1+1/2) and associated palmar/dorsal area of hand

29
Q

Ulnar nerve - motor supply to…

A

All muscles in hand (except LOAF)

FCU and 1/2FDP (to 4th and 5th digit) in forearm

30
Q

Where are the roots found?

A

In the neck

31
Q

Where are the trunks?

A

Supraclavicular

32
Q

Where are the branches?

A

Behind the clavicle

Brachial Plexus (2 decks)

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