OIA

Question 1

Trapezius

Answer 1

O: occipital bone, C7-T4 vert

I: clavicle, scapula

A: extends neck
Elevates, retracts, rotates and depresses scapula

Question 2

Zygomaticus Major

Answer 2

O: zygomatic bone

I: angle of the mouth

A: retracts, elevates upper lip (smile)

Question 3

Buccinator

Answer 3

O: mandible, maxilla

I: orbicularis oris angle of mouth

A: compresses cheek (fish face)

Question 4

Masseter

Answer 4

O: zygomatic arch

I: mandible

A: elevate, protract mandible

Question 5

Sternocleidomastoid

Answer 5

O: Sternum, clavicle

I: Mastoid process of temporal bone

A: flex neck

• individually: laterally flexes head
• rotates head & neck

Question 6

Rhomboideus Major

Answer 6

O: T1-T4 vert

I: Medial scapula

A: retracts, rotates scapula

Question 7

Deltoid

Answer 7

O: clavicle, scapula

I: humerus

A: abducts, medially & laterally rotates arm
-flexes, extends shouders

Question 8

Levator Scapulae

Answer 8

O: C1-C4 vert

I: superior scapula

A: elevates, retracts, adducts & rotates scapula

Question 9

Supraspinatus

Answer 9

O: supraspinous foss

I: humerus

A: abducts arm

Question 10

Infraspinatus

Answer 10

O: infraspinous fossa

I: humerus

A: laterally rotates arm

Question 11

Teres Major

Answer 11

O: Lateral scapula

I: humerus

A: extends shoulder
-adducts, medially rotates arm

Question 12

External Intercostals

Answer 12

O: Inferior margin (border) of rib

I: Superior margin (border) of rib below

A: Elevates ribs

Question 13

Internal Intercoastals

Answer 13

O: Superior margin (border) of rib

I: Inferior margin (border) of rib above

A: depresses ribs

Question 14

Pectoralis Major

Answer 14

O: Clavicle, sternum, costal cartilages

I: Humerus

A: flexes shouler
-Adducts, medially rotates arm

Question 15

Latissimus Dorsi

Answer 15

O: T7-L5 vert, sacrum, 10-12 ribs

I: Humerus

A: extends shoulders
-Adducts, medially rotates arm

Question 16

Biceps Brachii

Answer 16

O: Scapula

I: Radius

A: flexes arm
-Flexes, supinates forearm

Question 17

Brachialis

Answer 17

O: Anterior Humerus

I: Ulna

A: Flexes forearm @ eblow

Question 18

Triceps Brachii

Answer 18

O: Scapula, humerus

I: Olecranon process of ulna

A: Extends, adducts arm
-Extends forearm

Question 19

Supinator

Answer 19

O: Lateral side of Humerus & Ulna

I: Radius

A: Supinates forearm

Question 20

Pronator

Answer 20

O: Anterior side of the Ulna

I: Radus

A: Pronates forearm

Question 21

Flexor Carpi Radialis

Answer 21

O: Humerus

I: Metacarpal II & III

A: Flexes, abducts wrist

Question 22

Extensor Carpi Ulnaris

Answer 22

O: Humerus

I: Metacarpal V

A: Extends, adducts wrist

Question 23

Sartorius

Answer 23

O: Anterior Superior Iliac Spine

I: Tibia

A: Flexes hip & knee

• Rotates laterally thigh
• Rotates medially leg

Question 24

Gracilis

Answer 24

O: Pubis

I: Tibia

A: Adducts thigh
-Flexes knee

Question 25

Gluteus Maximus

Answer 25

O: Ilium, sacrum, coccyx

I: Femur

A: Extends hip
-Abducts, laterally rotates thigh

Question 26

Biceps Femoris

Answer 26

O: Ischium, femur

I: Fibula

A: Flexes knee, extends hip
-laterally rotates leg

Question 27

Semimembranosus

Answer 27

O: Ischium

I: tibia

A: Flexes knee
-Medially rotates leg

Question 28

Semitendinosus

Answer 28

O: ischium

I: tibia

A: extends hip

• flexes knee
• medially rotates leg

Question 29

Soleus

Answer 29

O: fibula, tibia

I: calcaneous

A: plantar flexion

Question 30

Tibialis anterior

Answer 30

O: tibia

I: medial cuneiform, metatarsal I

A: dorsiflexion
-inversion of foot

Question 31

Rectus Femoris

Answer 31

O: Anterior Inferior Iliac Spine

I: tibia, patella

A: extends knee
-Flexes hip