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•Innervation: The lateral two lumbricals (of the index and middle fingers) are innervated by the median nerve. The medial two lumbricals (of the little and ring fingers) are innervated by the ulnar nerve.
Diagram 1: bones of the hand. The forearm has a proximal radial ulnar joint at the elbow and a distal radial ulnar joint at the wrist. The forearm has a range of movement of about 180 degrees in pronation-supination.
17 paź 2022 · Three independent nerves supply the cutaneous innervation of the hand (see Image. Hand Cutaneous Innervation). From lateral to medial, these nerves include the superficial branch of the radial, median, and ulnar nerve. These peripheral nerves originate from the C5 to T1 levels of the spinal column.
In the forearm and hand, the ulnar nerve gives off articular, muscular, palmar, dorsal, superficial and deep terminal, and vascular branches. It divides into branches for the areas of skin on the medial side of the back of the hand and fingers (see Plate 4-12).
13 lis 2023 · The hand itself consists of specific bones onto which various muscles are attached, and a collection of neurovascular structures responsible for drainage and innervation. However, the intrinsic muscles of the hand are only partially responsible for all its range of motion.
The tendons connect muscles in the arm or hand to the bone to allow movement. In addition, there are arteries, veins and nerves within the hand that provide blood flow and sensation to the hand and fingers.
16 gru 2015 · An overview of hand anatomy including the bones of the hand, the muscles of the hand, the blood supply of the hand and the innervation of the hand.
