SHOULDER + UPPER ARM MYOLOGY

Question 1

What muscles are part of the shoulder region?

Answer 1

Deltoid, Supraspinatus, Infraspinatus, Teres Minor, Subscapularis, Teres Major

Question 2

What is the origin of the Deltoid muscle?

Answer 2

Lateral third of clavicle, acromion, spine of scapula

Question 3

What is the insertion of the Deltoid muscle?

Answer 3

Deltoid tuberosity of humerus

Question 4

What is the function of the Deltoid muscle?

Answer 4

Middle fibers: Abduction; Anterior fibers: Flexion/medial rotation; Posterior fibers: Extension/lateral rotation

Question 5

What is the position of the Deltoid muscle?

Answer 5

Lateral

Question 6

What is the layer of the Deltoid muscle?

Answer 6

Superficial

Question 7

What is the origin of the Supraspinatus muscle?

Answer 7

Supraspinous fossa of scapula

Question 8

What is the insertion of the Supraspinatus muscle?

Answer 8

Greater tubercle of humerus

Question 9

What is the function of the Supraspinatus muscle?

Answer 9

Initiates abduction of arm (first 15°)

Question 10

What is the position of the Supraspinatus muscle?

Answer 10

Posterior (superior to scapula)

Question 11

What is the layer of the Supraspinatus muscle?

Answer 11

Deep (beneath trapezius)

Question 12

What is the origin of the Infraspinatus muscle?

Answer 12

Infraspinous fossa of scapula

Question 13

What is the insertion of the Infraspinatus muscle?

Answer 13

Greater tubercle of humerus

Question 14

What is the function of the Infraspinatus muscle?

Answer 14

Lateral rotation of arm

Question 15

What is the position of the Infraspinatus muscle?

Answer 15

Posterior

Question 16

What is the layer of the Infraspinatus muscle?

Answer 16

Deep

Question 17

What is the origin of the Teres Minor muscle?

Answer 17

Lateral border of scapula

Question 18

What is the insertion of the Teres Minor muscle?

Answer 18

Greater tubercle of humerus

Question 19

What is the function of the Teres Minor muscle?

Answer 19

Lateral rotation of arm

Question 20

What is the position of the Teres Minor muscle?

Answer 20

Posterior

Question 21

What is the layer of the Teres Minor muscle?

Answer 21

Deep

Question 22

What is the origin of the Subscapularis muscle?

Answer 22

Subscapular fossa

Question 23

What is the insertion of the Subscapularis muscle?

Answer 23

Lesser tubercle of humerus

Question 24

What is the function of the Subscapularis muscle?

Answer 24

Medial rotation of arm

Question 25

**What is the position of the Subscapularis muscle?**

Answer 25

Anterior

Question 26

**What is the layer of the Subscapularis muscle?**

Answer 26

Deep

Question 27

**What is the origin of the Teres Major muscle?**

Answer 27

Inferior angle of scapula

Question 28

**What is the insertion of the Teres Major muscle?**

Answer 28

Medial lip of intertubercular sulcus of humerus

Question 29

**What is the function of the Teres Major muscle?**

Answer 29

Adduction and medial rotation of arm

Question 30

**What is the position of the Teres Major muscle?**

Answer 30

Posterior

Question 31

**What is the layer of the Teres Major muscle?**

Answer 31

Deep (below teres minor)

Question 32

**What muscles are part of the upper arm region?**

Answer 32

Biceps Brachii, Brachialis, Coracobrachialis, Triceps Brachii

Question 33

Origin of the Biceps Brachii (Short Head)?

Answer 33

Coracoid process of the scapula

Question 34

Insertion of the short head of the biceps brachii ?

Answer 34

Radial tuberosity of the radius and bicipital aponeurosis

Question 35

Layer of the short head of the biceps brachii ?

Answer 35

Superficial

Question 36

Position of the short head of the biceps brachii ?

Answer 36

Anterior compartment of the upper arm

Question 37

**What is the origin of the Biceps Brachii (long head)?**

Answer 37

Supraglenoid tubercle of scapula

Question 38

**What is the insertion of the Biceps Brachii (long head)?**

Answer 38

Radial tuberosity

Question 39

**What is the function of the Biceps Brachii (long head)?**

Answer 39

Flexion of elbow, supination of forearm

Question 40

**What is the position of the Biceps Brachii (long head)?**

Answer 40

Anterior

Question 41

**What is the layer of the Biceps Brachii (long head)?**

Answer 41

Superficial

Question 42

**What is the origin of the Brachialis muscle?**

Answer 42

Distal half of anterior humerus

Question 43

**What is the insertion of the Brachialis muscle?**

Answer 43

Coronoid process of ulna

Question 44

**What is the function of the Brachialis muscle?**

Answer 44

Primary flexor of elbow

Question 45

**What is the position of the Brachialis muscle?**

Answer 45

Anterior

Question 46

**What is the layer of the Brachialis muscle?**

Answer 46

Deep (beneath biceps brachii)

Question 47

The Origin of the Triceps Brachii (Medial Head - "Short Head")

Answer 47

Posterior surface of the humerus (inferior to the radial groove)

Question 48

Insertion of the Triceps Brachii (Medial Head - "Short Head")

Answer 48

Olecranon of the Ulna

Question 49

Layer of the Triceps Brachii (Medial Head - "Short Head")

Answer 49

Deep (beneath the long and lateral heads)

Question 50

Position of the Triceps Brachii (Medial Head - "Short Head")

Answer 50

Posterior compartment of the upper arm

Question 51

**What is the origin of the Triceps Brachii (long head)?**

Answer 51

Infraglenoid tubercle of scapula

Question 52

**What is the insertion of the Triceps Brachii (long head)?**

Answer 52

Olecranon of ulna

Question 53

**What is the function of the Triceps Brachii (long head)?**

Answer 53

Extension of elbow, shoulder extension

Question 54

**What is the position of the Triceps Brachii (long head)?**

Answer 54

Posterior

Question 55

**What is the layer of the Triceps Brachii (long head)?**

Answer 55

Superficial