Muscle Origins + Insertions (Unit Test)

Question 1

Gastrocnemius

Answer 1

Origin: Lateral + Medial Condyles Of Femur

Insertion: Calcenous

Action: Planter-Flexion

Question 2

Pectoralis Minor

Answer 2

Origin: Ribs 3-5

Insertion: Coracoid Process Of Scapula

Action: Elevates Ribs 3-5

Question 3

Lastissimus Dorsi

Answer 3

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

Insertion: Intertubercular Groove Of Humerus

Action: Inferiorly Pulls Shoulder

Question 4

Trapezius

Answer 4

Origin: Occipital, C7-T12

Insertion: Clavicle, Acrominon + Spine Of Scapula

Action: Extension Of The Head

Question 5

Semitendinosus (also semimembranosus)

Answer 5

Origin: Ischial Tuberosity

Insertion: Medial Tibia

Action: Thigh Extension

Question 6

Adductor Brevis (also longus + mangus)

Answer 6

Origin: Pubis

Insertion: Linea Aspira Of Femur

Action: Adduction Of Thigh

Question 7

Tibialis Anterior

Answer 7

Origin: Lateral Tibia

Insertion: First Metatarsal + Medial Cuneiform

Action: Dorsi-Flexion

Question 8

Rectus Femoris

Answer 8

Origin: Anterior Inferior iliac Spine

Insertion: Tibial Tuberosity

Action: Leg Extension

Question 9

Triceps Brachii

Answer 9

Origin: Infraglenoid Tubercle + Humerus

Insertion: Ulna + Olecranon Process

Action: Arm Extension

Question 10

Brachialis

Answer 10

Origin: Anterior + Distal Humerus

Insertion: Coronoid Process Of Ulna

Action: Forearm Flexion

Question 11

Gluteus Maximus

Answer 11

Origin: Sacrum, ilium, Coccyx

Insertion: Gluteal Tuberosity Of Femur + Lateral Condyle Of Tibia

Action: Thigh Abduction

Question 12

Infraspinatus

Answer 12

Origin: Infraspinous Fossa

Insertion: Humerus

Action: Circumduction

Question 13

Teres Major

Answer 13

Origin: Scapula

Insertion: Humerus

Action Circumduction