Arm
Relation of left radial nerve to triceps muscle, posterior view
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Image #96-5
Arm
Relation of left radial nerve to triceps muscle, posterior view
The long and lateral heads of the triceps muscle have been transected (19) and reflected laterally.
- Teres minor muscle
- Circumflex scapular artery
- Teres major muscle
- Muscular branches of radial nerve
- Triceps brachii muscle (long head, reflected laterally)
- Muscular branches brachial artery
- Triceps brachii muscle (lateral head, reflected laterally; pointer on intramuscular aponeurosis which unites long and lateral heads of muscle)
- Teres major muscle (area of origin)
- Radial nerve (retracted medially)
- Coracobrachialis muscle (in background)
- Brachial artery
- Muscular branch of radial nerve (to lateral head of triceps)
- Upper pointer: Deep brachial artery (continues distally as radial collateral artery) Lower pointer: Body of humerus (covered by periosteum pointer on sulcus of radial nerve)
- Dorsal antebrachial cutaneous nerve
- Triceps brachii muscle (medial head)
- Superior ulnar collateral artery
- Muscular branch of radial nerve (to lower part of medial head of triceps and to anconeus muscle)
- Muscular branch of radial nerve (to medial head of triceps)
- Triceps brachii muscle (transected; upper pointer, lateral head; lower pointer, long head)