Zygomaticus major - Origin
(Face and Neck)
|
|
Zygomatic bone |
| |
Zygomaticus major - Insertion
(Face and Neck) |
|
Angle of mouth |
| |
Zygomaticus major - Action
(Face and Neck) |
|
Elevates and abducts upper lip (as in laughing) |
| |
Sternocleidomastoid - Origin
(Face and Neck) |
|
Sternum, clavicle |
| |
Sternocleidomastoid - Insertion
(Face and Neck) |
|
Mastoid process |
| |
Trapezius - Origin
(Posterior Thorax)
|
|
Occipital bone, Vertebrae (spines of C7-T12) |
| |
Trapezius - Insertion
(Posterior Thorax) |
|
Clavicle, Scapula (spine and acromion) |
| |
Trapezius - Action
(Posterior Thorax) |
|
Elevates and depresses scapula; rotates scapula |
| |
Latissimus dorsi - Origin
(Posterior Thorax) |
|
Vertebrae (spines of T7-L5), Ribs 8-12, sacral and iliac crests |
| |
Latissimus dorsi - Insertion
(Posterior Thorax) |
|
Humerus (intertubercular groove) |
| |
Latissimus dorsi - Action
(Posterior Thorax) |
|
Adducts, extends, and rotates arm (medially); Draws arm posteriorly |
| |
Pectoralis major - Origin
(Anterior Thorax)
|
|
Clavicle (medial half), sternum (body), cartilages of ribs 2-6 |
| |
Pectoralis major - Insertion
(Anterior Thorax) |
|
Humerus (greater tubercle) |
| |
Pectoralis major - Action
(Anterior Thorax) |
|
Adducts, flexes, and medially rotates arm |
| |
Deltoid - Origin
(Shoulder) |
|
Clavicle, scapla (spine and acromion) |
| |
Deltoid - Insertion
(Shoulder) |
|
Humerus (deltoid tuberosity) |
| |
Deltoid - Action
(Shoulder) |
|
Abducts, flexes, extends, and medially and laterally rotates arm |
| |
Infraspinatus - Origin
(Shoulder) |
|
Scapula (infraspinous fossa) |
| |
Infraspinatus - Insertion
(Shoulder) |
|
Humerus (greater tuberosity) |
| |
Infraspinatus - Action
(Shoulder) |
|
Lateral rotation of arm; adduction of arm |
| |
Biceps brachii - Origin
(Upper Arm)
|
|
Scapula (supraglenoid tubercle), Scapula (coracoid process) |
| |
Biceps brachii - Insertion
(Upper Arm) |
|
Radius (radial tuberosity) |
| |
Biceps brachii - Action
(Upper Arm) |
|
Flexes forearm; Supinates forearm; Flexes arm |
| |
Triceps brachii - Origin
(Upper Arm) |
|
Scapula (infraglienoid tubercle), humerus (lateral and posterior surface) |
| |
Triceps brachii - Insertion
(Upper Arm) |
|
Ulna (olecranon process) |
| |
Triceps brachii - Action
(Upper Arm) |
|
Extends forearm; extends arm |
| |
Flexor carpi radialis - Origin
(Forearm) |
|
Medial epicondyle of humerus |
| |
Flexor carpi radialis - Insertion
(Forearm) |
|
Metacarpals II and III |
| |
Flexor carpi radialis - Action
(Forearm) |
|
Flexes and abducts hand |
| |
Brachioradialis - Origins
(Forearm) |
|
Lateral epicondyle of humerus |
| |
Brachioradialis - Insertion
(Forearm) |
|
Styloid process of radius |
| |
Brachioradialis - Action
(Forearm) |
|
Flexes forearm; supinates and pronates forearm |
| |
Rectus abdominis - Origin
(Abdominal Wall)
|
|
Pubic crest, pubic symphysis |
| |
Rectus abdominis - Insertion
(Abdominal Wall) |
|
Sternum (xiphoid process) and inferior ribs |
| |
Rectus abdominis - Action
(Abdominal Wall) |
|
Flexes vertebral column; compresses abdomen |
| |
Gluteus maximus - Origin
(Thigh) |
|
Ilium |
| |
Gluteus maximus - Insertion
(Thigh) |
|
Femur |
| |
Gluteus maxius - Action
(Thigh) |
|
Extends thigh and rotates it laterally |
| |
Quadriceps femoris group - Origin
(Thigh) |
|
Rectus femoris - ilium; Others - femur |
| |
Quadriceps femoris group - Insertion
(Thigh) |
|
Tibia (Tibal ruberosity) |
| |
Quadriceps femoris group - Action
(Thigh) |
|
Extends leg; Rectus femoris also flexes thigh |
| |
Sartorius - Origin
(Thigh) |
|
Os coxa (anterior superior iliac spines) |
| |
Sartorius - Insertion
(Thigh) |
|
Tibia (medial side of tibial tuberosity) |
| |
Sartorius - Action
(Thigh) |
|
Flexes thigh and leg; rotates leg medially; rotates thight laterally |
| |
Gastrocnemius - Origin
(Thigh) |
|
Femur (lateral and medial condyles) |
| |
Gastrocnemius - Insertion
(Thigh) |
|
Calcaneus by way of Achilles tendon |
| |
Gastrocnemius - Action
(Calf) |
|
Plantar flexes foot; flexes leg |
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