ORIGINS/INSERTIONS

Question 1

Sternocleidomastoid

Answer 1

O: Sternum, Clavicle
I: Mastoid Process
A: Flexion & opposite rotation of cervical spine

Question 2

Rectus abdominis

Answer 2

O:Pubic crest, pubic symphysis
I: Xiphoid process, costal cartilage 5-7
A: flexion of vertebral column, rotation of trunk

Question 3

Iliopsoas

Answer 3

O: Iliacus: iliac fossa & crest, sacrum; Psoas major: T12-L5
I: Lesser trochanter of the femur
A: flexion of the trunk and hip flexion

Question 4

Pectoralis minor

Answer 4

O: ribs 3-5
I: Coracoid process
A: Depression of the scapula

Question 5

Serratus anterior

Answer 5

O: ribs 1-8
I: Vertebral border of scapula
A: abduction & lateral rotation of the scapula

Question 6

Deltoid

Answer 6

O: Anterior fibers: clavicle
Middle fibers: acromion of scapula
Posterior fibers: spine of scapula
I: Deltoid tuberosity
A: Anterior: flexion and medial rotation at shoulder
Middle: abduction
Posterior: extension & lateral rotation

Question 7

Pectoralis major

Answer 7

O: Clavicle, Sternum, ribs 1-7, ext. Oblique apopneurosis
I: Intertubercular groove (sulcus)
A: flexion, medial rotation, and adduction at the shoulder

Question 8

Biceps brachii

Answer 8

O: Long head: glenoid fossa-superior lip
Short head: Coracoid process, scapula
I: Radial tuberosity
A: Weak shoulder flexion, flexion at elbow and supination of the forearm

Question 9

Triceps brachii

Answer 9

O: Long head: glenoid fossa-inferior  lip
   Lateral head: posterior humerus
 Medial head: posterior & medial humerus
I: Olecranon
A: extension at elbow

Question 10

Sartorius

Answer 10

O: Anterior superior iliac spine
I: proximal medial tibia
A: flexion and lateral rotation at the hip, weak knee flexion

Question 11

Rectus femoris

Answer 11

O: anterior inferior iliac spine
I: patella, tibial tuberosity
A: flexion at the hip, extension at the knee

Question 12

Biceps femoris

Answer 12

O: Long head: Ischial tuberosity
Short head: Linea aspera
I: Lateral tibial condyle, Head of fibula
A: flexion at the knee, extension at the hip (long head only)

Question 13

Semitendinosus

Answer 13

O: ischial tuberosity
I: Medial surface of proximal tibia
A: extension at the hip, flexion at the knee

Question 14

Semimembranosus

Answer 14

O: ischial tuberosity
I: medial tibial condyle
A: extension at the hip, flexion at the knee

Question 15

Gluteus maximus

Answer 15

O: posterior ilium, sacrum, coccyx
I: gluteal tuberosity of femur, iliotibial tract
A: extension and lateral rotation at the hip

Question 16

Vastus lateralis

Answer 16

O: greater trochanter, intertrochanteric line
I: patella, tibial tuberosity
A: extension of the knee

Question 17

Vastus medialis

Answer 17

O: intertrochanteric line and linea aspera
I: patella, tibial tuberosity
A: extension of the knee

Question 18

Vastus intermedius

Answer 18

O: anterior and lateral diaphysis of femur
I: patella, tibial tuberosity
A: extension of the knee

Question 19

Gastrocnemius

Answer 19

O: Medial & lateral femoral condyles
I: Calcaneus
A: Plantarflexion at the ankle (weak knee flexion)