Proximal Forelimb Muscles

Question 1

Brachialis origin

Answer 1

Lateral side of proximal part of humerus

Question 2

Brachialis insertion

Answer 2

Ulnar and radial tuberosities

Question 3

Brachialis action

Answer 3

Flex elbow joint

Question 4

Biceps brachii origin

Answer 4

Supraglenoid tubercle

Question 5

Biceps brachii insertion

Answer 5

Ulnar and radial tuberosities

Question 6

Biceps brachii action

Answer 6

Flex elbow joint and extend shoulder joint

Question 7

Scapular deltoideus origin

Answer 7

Scapular spine

Question 8

Scapular deltoideus insertion

Answer 8

Deltoid tuberosity

Question 9

Acromial deltoideus origin

Answer 9

Acromion of scapula

Question 10

Acromial deltoideus insertion

Answer 10

Deltoid tuberosity

Question 11

Deltoideus action

Answer 11

Shoulder flexion

Question 12

Infraspinatus origin

Answer 12

Infraspinous fossa

Question 13

Infraspinatus insertion

Answer 13

Greater tubercle of the humerus

Question 14

Infraspinatus action

Answer 14

• Shoulder flexion/extension
• Shoulder stability
• Shoulder abduction
• Lateral rotation of humerus

Question 15

Teres minor origin

Answer 15

Infraglenoid tubercle and caudal border of scapula (distal third)

Question 16

Teres minor insertion

Answer 16

Teres minor tuberosity on humerus

Question 17

Teres minor action

Answer 17

• Shoulder flexion
• Lateral rotation of the shoulder
• Prevent medial rotation

Question 18

Supraspinatus origin

Answer 18

Supraspinous fossa

Question 19

Supraspinatus insertion

Answer 19

Greater tubercle of the humerus

Question 20

Supraspinatus action

Answer 20

Extend and stabilize the shoulder joint

Question 21

Subscapularis origin

Answer 21

Subscapular fossa

Question 22

Subscapularis insertion

Answer 22

Lesser tubercle of the humerus

Question 23

Subscapularis action

Answer 23

• Adduct shoulder
• Extend shoulder
• Medially rotate shoulder
• Prevent lateral rotation

Question 24

Teres major origin

Answer 24

Caudal angle and caudal border of scapula

Question 25

Teres major insertion

Answer 25

Teres major tuberosity of humerus

Question 26

Teres major action

Answer 26

- Shoulder joint flexion - Medial rotation of shoulder joint - Prevent lateral rotation

Question 27

Coracobrachialis origin

Answer 27

Coracoid process of scapula

Question 28

Coracobrachialis insertion

Answer 28

Lesser tubercle of humerus

Question 29

Coracobrachialis action

Answer 29

Adduct, extend, stabilize shoulder joint

Question 30

Tensor fasciae antebrachii origin

Answer 30

Fascia covering lateral side of latissimus dorsi

Question 31

Tensor fasciae antebrachii insertion

Answer 31

Olecranon

Question 32

Tensor fasciae antebrachii action

Answer 32

Extend elbow joint

Question 33

Long head of triceps brachii origin

Answer 33

Caudal border of scapula

Question 34

Long head of triceps brachii insertion

Answer 34

Olecranon tuber

Question 35

Long head of triceps brachii action

Answer 35

Extend elbow joint, flex shoulder joint

Question 36

Lateral head of triceps brachii origin

Answer 36

Tricipital line of humerus

Question 37

Lateral head of triceps brachii insertion

Answer 37

Olecranon tuber

Question 38

Lateral head of triceps brachii action

Answer 38

Extend elbow joint and flex shoulder joint

Question 39

Accessory head of triceps brachii origin

Answer 39

Neck of humerus

Question 40

Accessory head of triceps brachii insertion

Answer 40

Olecranon tuber

Question 41

Accessory head of triceps brachii action

Answer 41

Extend elbow joint

Question 42

Medial head of triceps brachii origin

Answer 42

Lesser tubercle of humerus

Question 43

Medial head of triceps brachii insertion

Answer 43

Olecranon

Question 44

Medial head of triceps brachii action

Answer 44

Extend elbow joint

Question 45

Anconeus origin

Answer 45

Lateral and medial epicondyles of humerus

Question 46

Anconeus insertion

Answer 46

Olecranon

Question 47

Anconeus action

Answer 47

Extend the elbow joint