Origins and Insertions: Scapular Muscles

Question 1

What are the 3 origins of the Deltoid muscle?

Answer 1

1. Clavicle
2. Acromion process
3. spine of the scapula

Question 2

What is the insertion of the Deltoid muscle?

Answer 2

The deltoid tuberosity of the humerus

Question 3

Which 4 muscles make up the rotator cuff?

Answer 3

Supraspinatus, Infraspinatus, Teres Minor and Subscapularis (SITS)

Question 4

What is the origin of the Supraspinatus?

Answer 4

Supraspinatus fossa of the scapula

Question 5

What is the insertion of the supraspinatus?

Answer 5

greater tuberosity of the humerus

Question 6

What is the origin of the Infraspinatus?

Answer 6

Infraspinatus fossa of the scapula

Question 7

What is the insertion of the infraspinatus?

Answer 7

Greater tuberosity of the humerus

Question 8

What is the origin of the Teres minor?

Answer 8

axillary border of scapula

Question 9

What is the insertion of the Teres minor?

Answer 9

greater tuberosity of the humerus

Question 10

What is the origin of the subscapularis?

Answer 10

subscapular fossa of the scapula

Question 11

What is the insertion of the subscapularis?

Answer 11

lesser tuberosity of the humerus

Question 12

Which 3 muscles have insertions on the greater tuberosity of the humerus?

Answer 12

Supraspinatus, Infraspinatus and Teres minor

Question 13

Which muscle has an insertion on the lesser tuberosity of the humerus?

Answer 13

subscapularis

Question 14

Which 3 muscles have origins in a fossa of the scapula? What are the names of the fossas?

Answer 14

Supraspinatus, infraspinatus and subscapular.

the fossas are named for each muscle

Question 15

What is the origin of the Teres Major?

Answer 15

Inferior angle of the scapula

Question 16

What is the insertion of he Teres Major?

Answer 16

Medial lip of the intertubucular groove of the humerus