Muscle Origins + Insertions - Exam

Question 1

Deltoid

Answer 1

Origin: Clavicle, Acrominon, Spine Of Scapula

Insertion: Humerus, Deltoid Tuberosity

Action: Abducts Arm

Question 2

Gluteus Maximus

Answer 2

Origin: ilium, Sacrum, Coccyx

Insertion: Gluteal Tuberosity of Femur
Lateral Condyle of Tibia

Action: Laterally Rotates Thigh

Question 3

Biceps Brachii

Answer 3

Origin: Supraglenoid Tubercle, Corocoid Process

Insertion: Radial Tuberosity

Action: Arm Flexion

Question 4

Triceps Brachii

Answer 4

Origin: Infraglenoid Tubercle, Humerus

Insertion: Olecranon Process, Ulna

Action: Extension of Arm

Question 5

Sternocleidomastoid

Answer 5

Origin: Manbrium, Sternal Head of Clavicle

Insertion: Mastoid Process

Action: Flexion of Neck

Question 6

Rectus Femoris

Answer 6

Origin: Anterior Inferior iliac Spine

Insertion: Tibial Tuberosity

Action: Leg Extension

Question 7

Vastus Intermedius

Answer 7

Origin: Greater Trochanter

Insertion: Tibial Tuberosity

Action: Leg Extension

Question 8

Gastrocnemius

Answer 8

Origin: Medial & Lateral Condyles of Femur

Insertion: Calcenous

Action: Planter-Flexion

Question 9

Biceps Femoris

Answer 9

Origin: Ischial Tuberosity (Long), Linea Aspira Of Femur (Short)

Insertion: Head of Fibula, Lateral Tibia

Action: Extension of Thigh

Question 10

Trapezius

Answer 10

Origin: Occipital, C7-T12

Insertion: Clavicle, Acrominon, Spine of Scapula

Action: Extension of Head

Question 11

Latissimus Dorsi

Answer 11

Origin: Ribs 10-12, Sacrum, ilium, T7-T12, L1-L5

Insertion: Intertubercular Groove of Humerus

Action: Inferiorly Pulls Shoulder

Question 12

Pectoralis Major

Answer 12

Origin: Clavicle, Sternum, Ribs 1-7

Insertion: Greater Tubercle of Humerus

Action: Medial Rotation of Arm