Muscles Flashcards
What does the Orbicularis Oculi do?
Compresses eyes
What does the Masseter so?
Elevates mandible/ closes jaw.
What does the Sternocleidomastoid do?
Neck flexion, head rotation.
What does the Rectus abdominis do?
Flexes vertebral column, compresses abdomen, depresses ribs.
What does the external oblique do?
Compresses abdomen, depresses ribs, lateral flexion and rotation of vertebral column.
What does the rhomboid major do?
Adducts and rotates scapula.
What does the Trapezius do?
Extend neck; elevate, depress or rotate scapula.
What does the deltoid do?
Abducts and rotates arm; arm flexion and extension.
What does the Latissimus Dorsi do?
Extends, adducts, and medially rotates arm.
What does the Pectoralis Major do?
Flexes, adducts, and medially rotates arm.
What does the Teres Major do?
Extends and medially rotates arm.
What does the Supraspinatus do?
Abducts arm.
What does the Infraspinatus do?
Laterally rotates arm.
What does the Biceps Brachii do?
Supinates forearm; flexes elbow and shoulder.
What does the Brachialis do?
Flexes elbow.
What does the Triceps Brachii do?
Extends elbow; extends and adducts arm.
What does the Flexor Carpi Radialis do?
Flexes and abducts wrist.
What does the Flexor Carpi Ulnaris do?
Flexes and adducts wrist.
What does the Extensor Digitorum do?
Extends fingers and wrists.
What does the Extensor Carpi Ulnaris do?
Extends and adducts wrist.
What does the Adductor Longus do?
Adducts, flexes and medially rotates thigh.
What does the Psoas Major do?
Flexes thigh; flexes vertebral column.
What does the Gracilis do?
Adducts and medially rotates thigh; flexes knee.
What does the Orbicularis Oris do?
Compresses lips
What does the Sartorius do?
Flexes, abducts and laterally rotates thigh; flexes knee.
What does the Rectus Femoris do?
Flexes thigh; extends knee.
What does the Vastus Lateralis do?
Extends knee.
What does the Vastus Medialis do?
Extends knee.
What does the Gluteus Maximus do?
Extends, abducts and laterally rotates thigh.
What does the Gluteus Medius do?
Abducts and medially rotates thigh.
What does the Biceps Femoris do?
Extends and laterally rotates thigh; flexes knee.
What does the Semimembranosous do?
Extends and medially rotates thigh; flexes knee.
What does the Semitendinosus do?
Extends and medially rotates thigh; flexes knee.
What does the Gastrocnemius do?
Plantarflexion; flexes knee.
What does the Tibialis Anterior do?
Dorsiflexion.
What is the origin of the Masseter?
Zygomatic arch
What is the insertion of the Masseter?
Lateral surface and angle of mandibular ramus.
What is the origin of the Sternocleidomastoid?
Sternal end of clavicle and manubrium.
What is the insertion of the Sternocleidomastoid?
The mastoid.
What is the origin of the Deltoid?
Acromium and spine of clavicle and scapula.
What is the insertion of the Deltoid?
Deltoid tuberosity
What is the origin of the Pectoralis Major?
Cartilages of ribs 2-6, body of sternum, medial portion of clavicle.
What is the insertion of the Pectoralis Major?
Greater tubercle and lateral intertubecular sulcus.
What is the origin of the Biceps Brachii?
Coracoid process and supraglenoid tubercle.
What is the insertion of the Biceps Brachii?
Radial tuberosity.
What is the origin of the Triceps Brachii?
Superior, lateral margin of humerus, posterior surface of humerus.
What is the insertion of the Triceps Brachii?
Olecranon of ulna.
What is the origin of the Flexor Carpi Radialis?
Medial epicondyle of humerus.
What is the insertion of the Flexor Carpi Radialis?
Bases of 2nd and 3rd metacarpal bones.
What is the origin of the Extensor Digitorum?
Lateral epicondyle of humerus.
What is the insertion of the Extensor Digitorum?
Posterior surfaces of the phalanges, digits 2-5.
What is the origin of the Gluteus Medius?
Anterior iliac crest, lateral surface of ilium.
What is the insertion of the Gluteus Medius?
Greater trochanter of femur.
What is the origin of the Psoas Major?
Lumbar vertebrae.
What is the insertion of the Psoas Major?
Lesser trochanter in company with iliacus.
What is the origin of the Sartorius?
Anterior superior iliac spine.
What is the insertion of the Sartorius?
Medial proximal of tibia near tibial tuberosity.
What is the origin of the Semimembranosus?
Ischial tuberosity.
What is the insertion of the Semimembranosus?
Posterior surface of medial condyle of tibia.
What is the origin of the Vastus Lateralis?
Anterior and inferior to greater trochanter of femur and along linea aspera.
What is the insertion of the Vastus Lateralis?
Tibial Tuberosity
What is the origin of the Gastrocnemius?
Femoral condyles.
What is the insertion of the Gastrocnemius?
Calcaneus
What is the origin of the Tibialis Anterior?
Lateral condyle and proximal shaft of tibia.
What is the insertion of the Tibialis Anterior?
Base of first metatarsal bone and medial cuneiform.
