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Palmaris brevis muscle is located on the ulnar side of the hand. [1] [2] It arises from the tendinous fasciculi from the transverse carpal ligament and palmar aponeurosis.The muscle fibres are inserted into the skin on the ulnar border of the palm of the hand, [1] and occasionally on the pisiform bone.
The muscles of the hand are the skeletal muscles responsible for the movement of the hand and fingers. The muscles of the hand can be subdivided into two groups: the extrinsic and intrinsic muscle groups. The extrinsic muscle groups are the long flexors and extensors. They are called extrinsic because the muscle belly is located on the forearm.
Structure. The abductor pollicis brevis is a flat, thin muscle located just under the skin. It is a thenar muscle, and therefore contributes to the bulk of the palm's thenar eminence. It originates from the flexor retinaculum of the hand, the tubercle of the scaphoid bone, and additionally sometimes from the tubercle of the trapezium.
Flexor pollicis brevis muscle. Superficial muscles of the left hand, palmar view. The flexor pollicis brevis is a muscle in the hand that flexes the thumb. It is one of three thenar muscles. [1][2] It has both a superficial part and a deep part.
Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. The superficial branch of the ulnar nerve is a terminal branch of the ulnar nerve. [1] It supplies the palmaris brevis and the skin on the ulnar side of the hand. [2][3] It also divides into a common palmar digital nerve and a proper palmar digital nerve. [2]
Hypothenar eminence. The mucous sheaths of the tendons on the front of the wrist and digits. (Hypothenar eminence labeled at center right.) Transverse section across the wrist and digits. (Muscles of little finger labeled at upper right.) The hypothenar muscles are a group of three muscles of the palm that control the motion of the little finger.
Anatomical terms of muscle. [edit on Wikidata] In human anatomy, the adductor pollicis muscle is a muscle in the hand that functions to adduct the thumb. It has two heads: transverse and oblique. It is a fleshy, flat, triangular, and fan-shaped muscle deep in the thenar compartment beneath the long flexor tendons and the lumbrical muscles at ...
Deep palmar nerves. In the palm of the hand the median nerve is covered by the skin and the palmar aponeurosis, and rests on the tendons of the flexor muscles. Immediately after emerging from under the transverse carpal ligament the median nerve becomes enlarged and flattened and splits into a smaller, lateral, and a larger, medial portion. The ...