The shoulder and upper body

Question 1

Origin, insertion and motion of the supraspinatus?

Answer 1

Supraspinous fossa

Superior facet of greater tubercle

External rotation

Question 2

Origin, insertion and motion of the infraspinatus?

Answer 2

Infraspinous fossa

Middle faet of greater tubercle

External rotation

Question 3

Origin, insertion and motion of the Teres minor?

Answer 3

Superior lateral border of scapula

Inferior facet of greater tubercle

External rotation

Question 4

Origin, insertion and motion of the teres major?

Answer 4

Inferior lateral border of scapula

Lesser tuberosity

Internal rotation

Question 5

Origin, insertion and motion of the Subscapularis?

Answer 5

Subscapular fossa

Lesser tuberosity

Internal rotation

Question 6

Origin, insertion and actions of the pectrolais minor?

Answer 6

Origin ribs 3-5

Insertion coracoid process

Action - scapula protraction

Question 7

Origin, insertion and actions of the serratus anterior?

Answer 7

Origin: ribs 1-9

Insertion: medial border of scapula

Action: scapula protraction

Question 8

Origin, insertion and actions of the rhomboid major?

Answer 8

Origin - spinous processes of the T2 to T5 vertebrae

Insertion - medial border of the scapula

Action - Keep the scapula pressed against the thoracic wall and retract the scapula toward the vertebral column

Question 9

Origin, insertion and actions of the rhomboid minor?

Answer 9

Origin - C7-T1

Insertion - medial border of the scapula

Action - Keep the scapula pressed against the thoracic wall and retract the scapula toward the vertebral column

Question 10

Origin, insertion and actions of the trapezius muscle?

Answer 10

Origin - occipital bone at the base of skull

Insertion - spine of the scapula

Action – support the shoulders and limbs and the rotation of the scapula necessary to raise the arms above shoulder level

Question 11

Features of the deltoid (shoulder muscle)?

Answer 11

There is the deltoid anterior, middle and posterior

Origin is lateral third of clavicle and the spineof scapula

Insertion is deltoid tuberosity of humerus,

Anterior part flexes and medially rotates arm

Middle part: abducts arm

Posterior part: extends and laterally rotates arm

Question 12

Features of the coracobrachialis muslcle?

Answer 12

Origin is the coracoid process of the scapula

Insertion is the medial shaft of the humerus

Action is adducts shoulder Flexes shoulder

Question 13

Features of the Latissimus dorsi?

Answer 13

Origins: Spinous processes of T6-T12 Lumbar and sacral vertebrae Iliac crest

Insertion is the tubercular groove of humerus

Actions- Extends Medial rotates adducts

Question 14

Fearures of the pectoralis major?

Answer 14

Origin- clavicular head, and sternocostal head

Insertion is lateral lip of intertubercular groove of humerus

Action is adducts and medially rotates humerus