Chapter 7: Skeletal Muscles

Question 1

Sternocleidomastoid

Answer 1

Rotares and laterally flexes the neck

Anterior

Question 2

Trapezius

Answer 2

Draws head back and to the side; rotates scapula

Anterior/Posterior

Question 3

Deltoid

Answer 3

Raises and rotates arm

Anterior/Posterior

Question 4

Rectus femoris

Answer 4

Extends leg and assists in flexion of thigh

Anterior

Question 5

Sartorius

Answer 5

Flexes and rotates the thigh and leg

Anterior

Question 6

Tibialis anterior

Answer 6

Dorsiflexes foot and increases the arch in the beginning process of walking

Anterior

Question 7

Pectoralis major

Answer 7

Flexes, adducts, and rotates arm

Anterior

Question 8

Biceps brachii

Answer 8

Flexes arm and forearm and supinates forearm

Anterior

Question 9

External oblique

Answer 9

Co tracts abdomen and viscera (Internal organs)

Anterior

Question 10

Rectus abdominis

Answer 10

Compressed and flattens abdomen

Anterior

Question 11

Gastrocnemius

Answer 11

Plantar flexes foot and flexes knee

Anterior/Posterior

Question 12

Soleus

Answer 12

Plantar flexes foot

Anterior

Question 13

Triceps

Answer 13

Extends forearm

Posterior

Question 14

Latissimus dorsi

Answer 14

Adducts, extends, and rotates arm; used during swimming

Posterior

Question 15

Gluteus medius

Answer 15

Abducts and rotates thigh

Posterior

Question 16

Gluteus Maximus

Answer 16

Extends and rotates thigh

Posterior

Question 17

Biceps femoris

Answer 17

Flexes knee and rotates it outwards

Posterior

Question 18

Semitendinosus

Answer 18

Flexes and rotates let; extends thigh

Posterior

Question 19

Semimembranosus

Answer 19

Flexes and rotates leg; extends thigh

Posterior

Question 20

Achilles tendon (NOT A MUSCLE)

Answer 20

Plantar (sole of the foot) flexion and extension of ankle

Posterior