Brachialis & triceps Muscles and musculocutaneous nerve

This presentation specifically formed to describe Brachialis , triceps Muscles & musculocutaneous nerve of the upper limb

Transcript

1. Brachialis Muscle
2. Long head of biceps Short head of biceps Lower 1/3 of biceps Musculo-cutaneous n. Brachialis m. Coraco-brachialis m. Radial nerve
3. Origin of brachialis m. Insertion of brachialis m.: Ulnar tuberosity Intermuscular septa
4. Insertion of deltoid Brachialis m. Insertion of brachialis into ulnar tuberosity
5. Relations of Brachialis Muscle
6. Dr. Sherif Fahmy Brachial artery Median nerve Brachialis m. Biceps brachii m. Musculo-cutaneous n. Superficial Relations
7. Action of brachialis muscle: - Main flexor of elbow. Nerve supply: - Musculo-cutaneous nerve. - Radial nerve to its lateral part.
8. Triceps Brachii Muscle
9. Tendon of Triceps m. Lateral head Long head
10. Long head Lateral head Medial head Tendon of insertion of triceps m. Radial nerve and profunda brachii artery
11. Dr. Sherif Fahmy Long head of triceps Medial head of triceps Anterior view of triceps muscle
12. Attachments of Triceps Muscle
13. Origin of long head of triceps Origin of lateral head of triceps Origin of medial head of triceps Insertion of triceps Spiral groove Origin of articularis cubitii muscle
14. Long head of triceps Lateral head of triceps (cut) Radial n.
15. Articularis Cubiti Muscle Dr. Sherif Fahmy
16. Nerve Supply Radial nerve through the following branches: -To long and medial heads from branches of radial nerve before spiral groove (In axilla). -To lateral and medial heads from branches of radial nerve in the spiral groove. N.B.: Articularis cubiti is supplied by a branch from nerve to medial head of triceps.
17. Action of Triceps -Triceps is the main extensor of elbow. -Long head stabilizes shoulder joint from below during abduction. -Articularis cubiti pulls the capsule of elbow upwards to avoid being insinuated during elbow extension.
18. Musculo-cutaneous Nerve (C5,6,7)
19. Description of A Nerve ➢Definition. ➢Root value. ➢Course (It begins, passes & ends). ➢Branches. ➢Injury.
20. Course
21. Lateral cord of brachial plexus Musculo-cutaneous nerve (C5,6,7) Biceps brachii m.
22. Coracobrachialis m Biceps brachii (cut) Brachialis m. Musculo-cutaneous n. Lateral cutaneous n. of forearm Lateral cord of brachial plexus Tendon of biceps 3rd part of Axillary artery Brachial artery Anterior & posterior divisions It emerges lateral to tendon of biceps, then pierces the deep fascia one inch above elbow
23. Branches Muscular (in the arm): 1- Coracobrachialis m. 2- Biceps brachii m 3- Medial part of brachialis m. Cutaneous (in the forearm): - Skin of lateral surface of forearm till the proximal part of thenar eminence (ball of thumb). Articular: To elbow joint.