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Origin, Insertion, and Function of Selected Muscles

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Terms in this set (31)

  • Masseter origin

    Originates from the zygomatic bone.

  • Masseter insertion

    Inserts on the mandible.

  • Masseter function
    Elevates the mandible to close the jaw.
  • Sternohyoid origin

    Originates from the manubrium.

  • Sternohyoid insertion
    Inserts on the hyoid bone.
  • Sternocleidomastoid origin

    Originates from the manubrium.

  • Sternocleidomastoid insertion
    Inserts on the mastoid process of the temporal bone.
  • Sternocleidomastoid function

    Rotates and flexes the head.

  • Biceps brachii origin

    Originates from the scapula: the coracoid process (short head) and Glenoid cavity (long head).

  • Biceps brachii insertion

    Inserts on the radial tuberosity.

  • Biceps brachii function

    Flexion and supination.

  • Pronator teres origin

    Originates from the medial epicondyle of the humerus.

  • Pronator teres insertion

    Inserts on the lateral radius.

  • Flexor carpi radialis origin
    Originates from the medial epicondyle of the humerus.
  • Flexor carpi radialis insertion
    Inserts on the base of the second and third metacarpals.
  • Flexor carpi ulnaris origin

    Originates from the medial epicondyle of the humerus.

  • Flexor carpi ulnaris insertion

    Inserts on the base of the fifth metacarpal.

  • Extensor carpi ulnaris origin

    Originates from the lateral epicondyle of the humerus.

  • Extensor carpi ulnaris insertion
    Inserts on the base of the fifth metacarpal.
  • Triceps brachii origin

    Originates from the tubercle of scapula (long head) and posterior shaft of humerus (medial and lateral head).

  • Triceps brachii insertion

    Inserts on the olecranon of ulna.

  • Triceps brachii function

    Extension of forearm.

  • Rectus abdominis origin
    Originates from the pubic crest and pubic symphysis.
  • Rectus abdominis insertion

    Inserts on the xiphoid process and costal cartilage.

  • Rectus abdominis function

    Flexion and rotation of vertabral column.

  • Rectus femoris origin

    Originates from the anterior inferior iliac spine and acetabulum.

  • Rectus femoris insertion

    Inserts on the lateral radius.

  • Rectus femoris function

    Flexes thigh at hip.

  • Biceps femoris origin

    Originates from the ischial tuberosity.

  • Biceps femoris insertion
    Inserts on the head of the fibula and lateral condyle of the tibia.
  • Biceps femoris function

    Flexion of lower leg and extension of thigh.