brachial plexus Flashcards
1
Q
Spinal roots of the brachial plexus
A
C5, 6, 7, 8, T1
2
Q
5 parts of the brachial plexus
A
Roots, Trunks, Divisions, Cords, Branches
(Rowdy truckers drink cold beers)
3
Q
Trunks of the brachial plexus
A
Superior, Middle, Inferior
4
Q
Cords of the brachial plexus
A
Lateral, Posterior, Medial
5
Q
Branches of the brachial plexus (top to bottom)
A
Musculocutaneous, Axillary, Median, Radial, Ulnar
6
Q
Roots of the musculocutaneous nerve
A
C5, 6, 7
7
Q
Motor functions of the musculocutaneous nerve
A
- Brachialis
- Biceps brachii
- Coracobrachialis
8
Q
Roots of the axillary nerve
A
C5, C6
9
Q
Motor function of the axillary nerve
A
- Teres minor
- Deltoid
10
Q
Sensory function of axillary nerve
A
- Gives off lateral cutaneous nerve - innervates inferior region of deltoid (regimental badge area)
11
Q
Roots of median nerve
A
C6, C7, C8, T1
12
Q
Motor function of median nerve
A
- Most flexor muscles in forearm
- Thenar muscles
- Lateral lumbricals (associated with index + middle fingers)
13
Q
Sensory functions of the median nerve
A
- Gives off palmar cutaneous branch - innervates lateral part of the palm
- Digital cutaneous branch - innervates lateral 3 1/2 fingers on the anterior surface of the hand
14
Q
Roots of the radial nerve
A
C5, C6, C7, C8, T1
15
Q
Motor function of the radial nerve
A
- Triceps brachii
- Posterior forearm muscles
