Muscle Movements

Question 1

Pec major

Answer 1

Adducts and medially rotates humerus, draws scapula anteriorly and inferiorly,

Question 2

Pec minor

Answer 2

Stabilizes scapula and draws it anteriorly and inferiorly towards thoracic wall.

Question 3

Deltoid

Answer 3

Flexes and medially and laterally rotates arm, abducts and extends arm.

Question 4

Rotator cuff muscles

Answer 4

Supraspinatus - assists deltoid in anduction of arm
Infraspinatus - lateral rotation of arm
Subscapularis - medially rotates arm - 50% of movement
Teres minor - lateral rotation of the am

Question 5

Biceps

Answer 5

Flexion of elbow and fexion and abduction of shoulder, supination of radio ulnar joint..

Question 6

Brachialis muscle

Answer 6

Flexes forearm

Question 7

Coracobrachialis

Answer 7

Adducts arm, flexes arm, resists dislocation of shoulder.

Question 8

Triceps brachii

Answer 8

Extends the forearm, adducts and extends the humerus

Question 9

Brachioradialis

Answer 9

Flexion

Question 10

Flexor capri radialis

Answer 10

Flexion and abduction at wrist

Question 10

Flexor capri radialis

Answer 10

Flexion and abduction at wrist

Question 11

Pronator teres/ Pronator quadratus

Answer 11

Pronator teres - pronates the elbow and flexes the elbow

Pronator quadratus - pronation of the forearm

Question 12

Hamstrings

Answer 12

Extend the hip and flex the knee, innervated by sciatic nerve L4-S3

Question 13

Quadriceps

Answer 13

Knee extension, rectus femoris is also involved in hip flexion

Question 14

Gluteus maximus, medius, minimus;

Answer 14

Gluteus maximus: extension, antigravity muscle when getting up from seated position, external rotation
Gluteus medius: lateral rotation, abduction
Gluteus minimus: lateral rotation, abduction

Question 15

Gastrocnemius and soleus

Answer 15

Gastrocnemius - plantarflexes the foot and flexes the knee

Soleus - plantarflexes the foot