Upper Limb Elbow & Shoulder Muscles (Origins, Insertions)

Question 1

What is the Biceps brachii (long, short head)-
- Origin
- Insertion

Answer 1

Origin:
- Supra-glenoid tubercle (long head)
- Coracoid process (short head)

Insertion:
- Radial tuberosity

Question 2

What is the Brachialis -
- Origin
- Insertion

Answer 2

Origin:
- Lower 1/2 of anterior humerus

Insertion:
- Coronoid process

Question 3

What is the Brachioradialis -
- Origin
- Insertion

Answer 3

• Origin - Proximal to lateral epicondyle
• Insertion - styloid process of radius

Question 4

What is the Triceps brachii (long, lateral, medial head) -
- Origin
- Insertion

Answer 4

• Origin:
• Infra glenoid tubercle (long head)
• Proximal to radial groove (lateral head)
• Distal to radial groove (medial head)
• Insertion:
• Olecranon process

Question 5

What is the Supraspinatus -
- Origin
- Insertion

Answer 5

• Origin - Supraspinous fossa
• Insertion - Greater tubercle of humerus

Question 6

What is the Infraspinatus -
- Origin
- Insertion

Answer 6

• Origin - Infraspinous fossa
• Insertion - Greater tubercle of humerus

Question 7

What is the Subscapularis -
- Action
- Origin
- Insertion

Answer 7

• Origin - Subscapular fossa
• Insertion - Lesser tubercle of humerus

Question 8

What is the Teres minor -
- Origin
- Insertion

Answer 8

• Origin - Lateral border of scapula
• Insertion - Lesser tubercle of humerus

Question 9

What is the Deltoid (anterior fibres) -
- 3 Origins
- Insertion

Answer 9

• Origin:
• Lateral 1/3 of clavicle
• Acromion
• Spine of scapula
• Insertion:
• Deltoid tuberosity

Question 10

What is the Deltoid (posterior fibres) -
- 3 Origins
- Insertion

Answer 10

• Origin:
• Lateral 1/3 of clavicle
• Acromion
• Spine of scapula
• Insertion:
• Deltoid tuberosity

Question 11

What is the Deltoid (middle fibres) -
- 3 Origins
- Insertion

Answer 11

• Origin:
• Lateral 1/3 of clavicle
• Acromion
• Spine of scapula
• Insertion:
• Deltoid tuberosity

Question 12

What is the Pectoralis major -
- 3 Origins
- Insertion

Answer 12

• Origin:
• Sternum
• Clavicle
• 1st-6th ribs (anterior)
• Insertion:
• Bicipital groove

Question 13

What is the Pectoralis minor -
- Origin
- Insertion

Answer 13

• Origin:
• 3rd-5th ribs (anterior)
• Insertion:
• Coracoid process

Question 14

What is the Latissimus dorsi -
- 4 Origins
- Insertion

Answer 14

• Origin:
• T7-L5
• Iliac crest
• Inferior angle of scapula
• Thoracolumbar fascia
• Insertion:
• Bicipital groove

Question 15

What is the Rhomboids -
- 2 Origins
- Insertion

Answer 15

• Origin:
• T2-T5 (rhomboid major)
• C7-T1 (rhomboid minor)
• Insertion:
• Medial border of scapula

Question 16

What is the Trapezius -
- 3 Origins
- 3 Insertions

Answer 16

• Origin:
• Occiput (posterior cranium)
• C7-T12
• Nuchal ligament
• Insertion:
• Lateral 1/3 of clavicle
• Acromion
• Spine of scapula

Question 17

What is the Serratus anterior -
- Origin
- Insertion

Answer 17

• Origin:
• 1st-9th rib (lateral)
• Insertion:
• Medial border of scapula

Question 18

What is the Levator scapulae -
- Origin
- Insertion

Answer 18

• Origin:
• C1-C4
• Insertion:
• Superomedial border of scapula

Question 19

What is the acronym for rotator cuff?

Answer 19

S.I.T.S

S - Supraspinatus
I - Infraspinatus
T - Teres Minor
S - Subscapularis

Question 20

What are all 12 muscles in the shoulder/elbow:

Answer 20

• Biceps Brachii
• Brachialis
• Brachioradialis
• Triceps Brachii
• Rotator Cuff (Supraspinatus, Infraspinatus, Teres Minor, Subscapularis)
• Deltoid (Anterior/Middle/Posterior Fibres)
• Pectorals (Major/Minor)
• Latissimus Dorsi
• Rhomboids (Major/Minor)
• Trapezius (Upper/Middle/Lower Fibres)
• Serratus Anterior
• Levator Scapulae