A diagram showing the muscular cycle form by the biceps or flexor muscle, and the triceps or extensor muscle of the human arm.

Muscular Cycle of the Biceps

A diagram showing the muscular cycle form by the biceps or flexor muscle, and the triceps or extensor…

Outer layer of muscles on the front of the forearm. Labels: 1, biceps flexor cubiti; 2, brachialis internus; 3, triceps; 4, pronator radii teres; 5, flexor carpi radialis; 6, palmaris longus; 7, flexor sublimus digitorum; 8, flexor carpi ulnaris; 9, palmar fascia; 0, palmaris brevis muscle; 11, abductor pollicis manur; 12, flexor brevis pollicis manus; 13, supinator longus; 14, extensor ossis metacarpi pollicis.

Muscles of the Forearm

Outer layer of muscles on the front of the forearm. Labels: 1, biceps flexor cubiti; 2, brachialis internus;…

Muscles of the front of the leg. Labels: 1, tendon of quadriceps; 2, spine of tibia; 3, tibialis anticus; 4, extensor communis digitorum; 5, extensor proprius pollicis; 6, peroneus tertius; 7, peroneus longus; 8, peroneus brevis; 9, soleus; 10, gastrocnemius; 11, extensor brevis digitorum.

Muscles of the Front of the Leg

Muscles of the front of the leg. Labels: 1, tendon of quadriceps; 2, spine of tibia; 3, tibialis anticus;…

"The extensor muscles on the back of the forearm. Note the tendons at the wrist." —Davison, 1910

Muscles of the forearm

"The extensor muscles on the back of the forearm. Note the tendons at the wrist." —Davison, 1910