Page 1 (Ant & Post Thoracoappendicular and Scapulohumeral)

Question 0

Pectoralis major - origins

• Clavicular head
• Sternocostal head (3)

Answer 0

Clavicular head - medial 1/2 of clavicle

Sternocostal head - manubrium & body of sternum, Costal cartilage of ribs 1-6, and ext. oblique aponeurosis

Question 1

Pectoralis major - Insertion

Answer 1

lateral lip of Bicipital groove

Part of the PLT insertions on the bicipital groove

Question 2

Pectoralis major - actions (3)

Answer 2

Flexes, adducts, and medially rotates the arm

Question 3

Pectoralis major - innervations

• Clavicular head
• Sternocostal head

Answer 3

Medial and lateral pectoral nerves:

• Clavicular head (C5, C6)
• Sternocostal head (C7, C8, T1)

Question 4

Pectoralis minor - origin

Answer 4

Ribs 3-5

Question 5

Pectoralis minor - insertion

Answer 5

Coracoid process of scapula

Question 6

Pectoralis minor - innervation

Answer 6

medial pectoral nerve (C8, T1)

Question 7

Serratus anterior - origin

Answer 7

lateral parts of ribs 1-8

Question 8

Serratus anterior - insertion

Answer 8

Medial border of scapula

Question 9

Pectoralis minor - actions (2)

Answer 9

Protract and depress scapula

Question 10

Serratus anterior - innervation

Answer 10

Long thoracic nerve (C5, C6, C7)

Question 11

Subclavius - origin

Answer 11

First rib and its cartilage

Question 12

Subclavius - insertion

Answer 12

Inferior surface of clavicle

Question 13

Serratus anterior - actions (2)

Answer 13

Protracts and upward (sup.) rotation of scapula

Question 14

Subclavius - innervation

Answer 14

Nerve to subclavius (C5, C6)

Question 15

Subclavius - actions (2)

Answer 15

Anchor and depress the clavicle

Question 16

Trapezius - origins (4)

Answer 16

Medial third of superior nuchal line
External occipital protuberance
Nuchal ligaments
Spinous processes of vertebrae C7-T12

Question 17

Trapezius - insertions (3)

Answer 17

Lateral third of clavicle, acromion, and scapular spine

Question 18

Trapezius - innervation

Answer 18

Accessory nerve (CN XI) - motor

Question 20

Trapezius - actions (4)

Answer 20

Elevate and depress scapula
Rotates and retracts scapula

(There are three parts to the Trapezius [upper, middle, and lower])

Question 21

Latissimus dorsi - origins (2)

Answer 21

Vertebral spines from T7 to the sacrum
Iliac crest
Lower 3 or 4 ribs

Question 21

Latissimus dorsi - actions (3)

Answer 21

Adducts, extends, and rotates (medially) the arm

Question 22

Latissimus dorsi - insertion

Answer 22

Floor of bicipital groove(intertubercular groove) (Part of PLT)

Question 23

Latissimus dorsi - innervation

Answer 23

Thoracodorsal nerve (C6, C7, C8)

Question 24

Deltoid - insertion

Answer 24

Deltoid tuberosity of humerus

Question 25

Deltoid - origins (3)

Answer 25

Lateral 1/3 of clavicle, acromion, spine of scapula

Question 26

Deltoid - innervation

Answer 26

Axillary nerve (C5, C6)

Question 27

Deltoid - actions (5)

Answer 27

Abducts arm Anterior fibers flex and medially rotate arm Poster fibers extend and laterally rotate arm

Question 28

Supraspinatus - origin

Answer 28

Supraspinatous fossa

Question 29

Supraspinatus - Action

Answer 29

Abducts the arm (initiates abduction)

Question 30

Supraspinatus - insertion

Answer 30

Greater tubercle of humerus (superior facet) | Part of Rotator Cuff - SITS

Question 31

Supraspinatus - innervation

Answer 31

Suprascapular nerve (C4, C5, C6)

Question 32

Infraspinatus - origin

Answer 32

Infraspinous fossa

Question 33

Infraspinatus - action

Answer 33

Laterally rotates the arm

Question 34

Infraspinatus - insertion

Answer 34

Greater tubercle of humerus (middle facet) | Part of Rotator Cuff - SITS

Question 35

Infraspinatus - innervation

Answer 35

Suprascapular nerve (C5, C6)

Question 36

Teres minor - origin

Answer 36

Lateral border of scapula

Question 37

Teres minor - action

Answer 37

Laterally rotates the arm

Question 38

Teres minor - insertion

Answer 38

Greater tubercle of humerus (lowest facet) | Part of Rotator Cuff - SITS

Question 39

Teres minor - innervation

Answer 39

Axillary nerve (C5, C6)