1 — Biceps brachii; 2 — Medial intermuscular septum of arm; 3 — Triceps brachii; 4 — Humerus; 5 — Lateral intermuscular septum of arm; 6 — Brachialis; 7 — Fascia of individual muscle; Muscle sheath; 8 — Brachial fascia; 9 — Skin
1 — Biceps brachii; 2 — Medial intermuscular septum of arm; 3 — Triceps brachii; 4 — Humerus; 5 — Lateral intermuscular septum of arm; 6 — Brachialis; 7 — Fascia of individual muscle; Muscle sheath; 8 — Brachial fascia; 9 — Skin