Main Muscle Origin and Insertions

Question 1

Temporalis

Answer 1

Origin - temporal fossa and temporal fascia
Insertion - coronoid process and ramus of mandible

Question 2

Masseter

Answer 2

Origin - zygomatic arch
Insertion - angle of ramus of mandible

Question 3

Sternocleidomastoid

Answer 3

Origin - manubrium of sternum and clavicle
Insertion – mastoid process

Question 4

Deltoid

Answer 4

Origin - scapular spine, acromion and lateral clavicle
Insertion – deltoid tuberosity of humerus

Question 5

Pectoralis major

Answer 5

Origin - medial clavicle, sternum and costal cartilages 1 to 7
Insertion – intertubercular sulcus of humerus

Question 6

Coracobrachialis

Answer 6

Origin - coracoid process
Insertion – midshaft of humerus on medial side

Question 7

Teres major

Answer 7

Origin - inferior angle of scapula
Insertion – intertubercular sulcus of humerus

Question 8

Supraspinatus

Answer 8

Origin - supraspinous fossa of posterior scapula
Insertion – greater tubercle of humerus

Question 9

Infraspinatus

Answer 9

Origin - infraspinous fossa of posterior scapula
Insertion – greater tubercle of humerus

Question 10

Biceps brachii

Answer 10

Origin - long head: supraglenoid tubercle of scapula, short head: coracoid process
Insertion – biceps tendon: radial tuberosity, bicipital aponeurosis: blends with deep fascia of medial side of anterior compartment of forearm

Question 11

Teres minor

Answer 11

Origin - lateral border of posterior scapula
Insertion – greater tubercle of humerus

Question 12

Subscapularis

Answer 12

Origin - subscapular fossa of anterior scapula
Insertion – lesser tubercle of humerus

Question 13

Brachialis

Answer 13

Origin - anterior aspect of humerus
Insertion – ulnar tuberosity

Question 14

Brachioradialis

Answer 14

Origin - lateral supracondylar ridge of humerus
Insertion – lateral aspect of distal radius

Question 15

Triceps brachii

Answer 15

Origin – infraglenoid tubercle of scapula
Insertion – common tendon of olecranon process of ulna

Question 16

Anterior forearm muscles

Answer 16

Origin - medial epicondyle of humerus

Question 17

Posterior forearm muscles

Answer 17

Origin - lateral epicondyle of humerus