Shoulder Muscles

Question 1

Anterior deltoid origin

Answer 1

Lateral 1/3 clavicle

Question 2

Anterior deltoid insertion

Answer 2

Deltoid tuberosity

Question 3

Anterior deltoid action

Answer 3

Flexion, medial rotation

Question 4

Anterior deltoid innervation

Answer 4

Axillary nerve

Question 5

Anterior deltoid blood supply

Answer 5

Thoracoacromial artery, circumflex humeral arteries, profunda brachial artery

Question 6

Middle deltoid origin

Answer 6

Acromion

Question 7

Middle deltoid insertion

Answer 7

Deltoid tuberosity

Question 8

Middle deltoid action

Answer 8

Abduction of arm

Question 9

Middle deltoid innervation

Answer 9

Axillary nerve

Question 10

Middle deltoid blood supply

Answer 10

Thoracoacromial artery, circumflex humeral arteries, profunda brachial artery

Question 11

Posterior deltoid origin

Answer 11

Spine of scapula

Question 12

Posterior deltoid insertion

Answer 12

Deltoid tuberosity

Question 13

Posterior deltoid action

Answer 13

Extension and lateral rotation

Question 14

Posterior deltoid innervation

Answer 14

Axillary nerve

Question 15

Posterior deltoid blood supply

Answer 15

Thoracoacromial artery, circumflex humeral arteries, profunda brachial artery