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  2. File:Human arm bones diagram.svg - Wikipedia

    en.wikipedia.org/wiki/File:Human_arm_bones...

    It joins with the scapula above at the shoulder joint (or glenohumeral joint) and with the ulna and radius below at the elbow joint. Notice: When the arm is spun so that the thumb point to the outside of the body, meaning the palm of the hand looks forward then it is said the hand is supinated. But when the thumb remains in the inside and the ...

  3. Ulna - Wikipedia

    en.wikipedia.org/wiki/Ulna

    The ulna or ulnar bone (pl.: ulnae or ulnas) [3] is a long bone in the forearm stretching from the elbow to the wrist. It is on the same side of the forearm as the little finger, running parallel to the radius, the forearm's other long bone. Longer and thinner than the radius, the ulna is considered to be the smaller long bone of the lower arm.

  4. Humeroulnar joint - Wikipedia

    en.wikipedia.org/wiki/Humeroulnar_joint

    The accurate adaptation of the trochlea of the humerus, with its prominences and depressions, to the trochlear notch of the ulna, prevents any lateral movement. Flexion in the humeroulnar joint is produced by the action of the biceps brachii and brachialis , [ 3 ] assisted by the brachioradialis , with a tiny contribution from the muscles ...

  5. List of bones of the human skeleton - Wikipedia

    en.wikipedia.org/wiki/List_of_bones_of_the_human...

    Ulna (2) (Lined up with pinky) Radius (2) (Lined up with thumb) Hand (54 bones in total; 27 in each hand) Carpals. Scaphoid bone (2) Lunate bone (2) Triquetral bone (2) Pisiform bone (2) Trapezium (2) Trapezoid bone (2) Capitate bone (2) Hamate bone (2) Metacarpals (10 bones in total; 5 on each side) Phalanges of the hand (28 bones in total, 14 ...

  6. List of movements of the human body - Wikipedia

    en.wikipedia.org/wiki/List_of_movements_of_the...

    trochlear notch of the ulna: trochlea of humerus: Is a simple hinge-joint, and allows of movements of flexion and extension only. Humeroradial joint: head of the radius: capitulum of the humerus: Is a ball-and-socket joint. Superior radioulnar joint: head of the radius: radial notch of the ulna

  7. Distal radioulnar articulation - Wikipedia

    en.wikipedia.org/wiki/Distal_radioulnar_articulation

    The distal radioulnar articulation [1] (also known as the distal radioulnar joint, [2] or inferior radioulnar joint [1] [3]) is a synovial pivot joint between the two bones in the forearm; the radius and ulna. It is one of two joints between the radius and ulna, the other being the proximal radioulnar articulation.

  8. Upper limb - Wikipedia

    en.wikipedia.org/wiki/Upper_limb

    The median nerve innervates all the muscles of the anterior compartment of the forearm except flexor carpi ulnaris and the ulnar part of the flexor digitorum profundus. It also innervates the three thenar muscles and the first and second lumbricals. The ulnar nerve innervates the muscles of the forearm and hand not innervated by the median nerve.

  9. Ulnar styloid process - Wikipedia

    en.wikipedia.org/wiki/Ulnar_styloid_process

    The styloid process of the ulna projects from the medial and back part of the ulna. It descends a little lower than the head. The head is separated from the styloid process by a depression for the attachment of the apex of the triangular articular disk, and behind, by a shallow groove for the tendon of the extensor carpi ulnaris muscle.