The profundus tendons pierces the superficialis tendon. Lumbrical muscles originate from the profundus tendon and insert into the extensor expansion.

Middle layer of muscles on the posterior forearm.

Superficial muscles of the posterior forearm.

Deep muscles on the posterior forearm.

Extensor muscles of the forearm on transverse section.

Lateral aspect of leg and foot. B. Muscles, anterolateral view.

Ulnar and median nerve branches in palm of hand. Note that all seven interossei muscles are supplied by the ulnar nerve.

Posterior view of the thigh showing the semimembranosus muscle, semitentinosus muscle and their skeletal attachments.

Superficial dissection of the palm.

Scheme of motor innervation of anterior forearm muscles.

Lateral view of extensor expansion of the 3rd digit.

Leg, anterolateral view.

Extensor muscles of fingers