Practical 1

Question 1

What is/are the origin, insertion, and actions of the trapezius?

Answer 1

Origin- spinal processes

Insertion- scapular spine

Actions- extend, laterally flex, rotate the head & neck; elevate/depress, upwardly rotate scapula

Question 2

What is/are the origin, insertion, and actions of the levator scapula?

Answer 2

Origin- cervical vertebrae

Insertion- medial border of scapula

Actions- elevation & downward rotation of the scapula

Question 3

What is/are the origin, insertion, and actions of the rhomboids?

Answer 3

Origin- spinous processes c7 to t5

Insertion- medial border of scapula

Actions- retraction, downward rotation, elevation of the scapula

Question 4

What is/are the origin, insertion, and actions of the serratus anterior?

Answer 4

Origin- ribs

Insertion- medial border of the scapula

Actions- protraction & upward rotation of the scapula, holds medial border against rib cage

Question 5

What is/are the origin, insertion, and actions of the pectoralis minor?

Answer 5

Origin- ribs on anterior surface I

nsertion- coracoid process

Actions- depression, protraction, downward rotation of the scapula

Question 6

What is/are the origin, insertion, and actions of the supraspinatus?

Answer 6

Origin- supraspinus fossa

Insertion- greater tubercle of humerus

Action- abduction of glenohumeral

Question 7

What is/are the origin, insertion, and actions of the infraspinatus?

Answer 7

Origin- infraspinus fossa

Insertion- greater tubercle of humerus

Action- external rotation & horizontal abduction of glenohumeral

Question 8

What is/are the origin, insertion, and actions of the teres minor?

Answer 8

Origin- lateral border of scapula

Insertion- greater tubercle of humerus

Action- external rotation & adduction of glenohumeral

Question 9

What is/are the origin, insertion, and actions of the subscapularis?

Answer 9

O- subscapular fossa

I- lesser tubercle of humerus

A- internal rotation of glenohumeral

Question 10

What is/are the origin, insertion, and actions of the deltoids?

Answer 10

O- clavicle, acromion process, spine of scapula

I- deltoid tuberosity

A- anterior: flexion; middle: abduction; posterior: extension of glenohumeral

Question 11

What is/are the origin, insertion, and actions of the latissimus dorsi?

Answer 11

O- thoracic, spinous processes

I- bicipital groove

A- adduction, internal rotation, & extension of glenohumeral

Question 12

What is/are the origin, insertion, and actions of the teres major?

Answer 12

O- lateral border of scapula

I- crest of lesser tubercle

A- adduction, internal rotation, & extension of glenohumeral

Question 13

What is/are the origin, insertion, and actions of the pectoralis major?

Answer 13

O- clavicle & sternum

I- bicipital groove

A- adduction, internal rotation, horizontal adduction, flexion of glenohumeral

Question 14

What is/are the origin, insertion, and actions of the subclavious?

Answer 14

O- first rib

I- clavicle

A- stabilizes sternoclavicular joint

Question 15

What is/are the origin, insertion, and actions of the triceps brachii?

Answer 15

O- infraglenoid tubercle, posterior surface of humerus

I- olecranon process

A- extends elbow and glenohumeral

Question 16

What is/are the origin, insertion, and actions of the biceps brachii?

Answer 16

O- supraglenoid tubercle, coracoid process

I- radial tuberosity

A- flexes elbow & glenohumeral, supination

Question 17

What is/are the origin, insertion, and actions of the coracobrachialis?

Answer 17

O- coracoid process

I- humeral shaft

A- flex & adduct the glenohumeral

Question 18

Name the muscles responsible for abduction of the glenohumeral joint.

Answer 18

• supraspinatus
• teres minor
• middle deltoid

Question 19

Name the muscles responsible for adduction of the glenohumeral joint.

Answer 19

• latissimus dorsi
• teres major
• pectoralis major
• coraco brachialis

Question 20

Name the muscles responsible for external rotation of the glenohumeral joint.

Answer 20

• infraspinatus
• teres minor

Question 21

What muscles are responsible for internal rotation of the glenohumeral joint?

Answer 21

• subscapularis
• latissimus dorsi
• teres major
• pectoralis major

Question 22

Name the muscle responsible for horizontal abduction of the glenohumeral joint.

Answer 22

• infraspinatus

Question 23

Name the muscles responsible for horizontal adduction of the glenohumeral joint.

Answer 23

• pectoralis major
• teres minor

Question 24

Name the muscles responsible for flexion of the glenohumeral joint.

Answer 24

• anterior deltoid
• pectoralis majorj
• biceps brachii
• coracobrachialis

Question 25

Name the muscles responsible for extension of the glenohumeral joint.

Answer 25

* posterior deltoid * latissimus dorsi * teres major * triceps brachii

Question 26

Name the muscles responsible for upward rotation of the scapula.

Answer 26

* trapezius * serratus anterior

Question 27

Name the muscles responsible for downward rotation of the scapula.

Answer 27

* levator scapula * rhomboids * pectroalis minor

Question 28

Name the muscles that elevate the scapula.

Answer 28

* trapezius * rhomboids * levator scapula

Question 29

Name the muscles that depress the scapula.

Answer 29

* trapezius * pectoralis minor

Question 30

Name the muscles that protract the scapula.

Answer 30

* serratus anterior * pectoralis minor

Question 31

Name the muscle that retracts/adducts the scapula.

Answer 31

rhomboids