Session 1-Anatomy Of The Shoulder, Pectoral Region And Axilla

Question 1

Which four short muscles hold the shoulder joint together?

Answer 1

Subscapularis
Supraspinatus
Infraspinatus
Teres minor

Question 2

Which short muscle holding the shoulder joint together is on the front?

Answer 2

Subscapularis

Question 3

What movement of the humerus does the subscapularis produce?

Answer 3

Internal rotation

Question 4

What movement does the supraspinatus initiate?

Answer 4

Abduction of the humerus

Question 5

The four short muscles converge on the humerus to form an almost continuous cuff of flat, supporting tendons. What is this called?

Answer 5

Rotator cuff

Question 6

Which muscle arises from the coracoid process and inserts on the humerus?

Answer 6

Coracobrachialis

Question 7

How many muscles keep the scapula in place and move it in relation to the trunk?

Answer 7

Six (four on the back, one in front and one underneath)

Question 8

What is the name of the muscle underneath the scapula that keeps it in place?

Answer 8

Serratus anterior

Question 9

Which four muscles are on the back of the scapula, keeping it in place?

Answer 9

1) Trapezius
2) Levator scapulae
3) Rhomboid Minor
4) Rhomboid Major

Question 10

Which muscle is on the front of the scapula, keeping it in place?

Answer 10

Pectoralis minor

Question 11

Which two muscles define the anterior and posterior walls of the axilla?

Answer 11

Pectoralis major

Latissimus dorsi

Question 12

Which muscle surrounds the shoulder joint from front to back?

Answer 12

Deltoid

Question 13

What is the opening at the top of the chest called?

Answer 13

Superior thoracic aperture

Question 14

What are the main spinal nerves to the upper extremity?

Answer 14

C5
C6
C7
C8
T1

Question 15

Which vein is in the groove between pectoralis major and deltoid?

Answer 15

Cephalic vein

Question 16

Complete the sentences:

The cephalic vein joins the main vein of the upper extremity, ____________ vein and this is joined by the main vein of the head and neck, ___________ _____________ vein. Together, they form the ____________________ vein. The right and left _________________ veins join to form the ____________ ______ ______.

Answer 16

Subclavian 
Internal jugular 
Brachiocephalic 
Brachiocephalic 
Superior vena cava

Question 17

What are the two other names for the subclavian artery?

Answer 17

Axillary

Brachial

Question 18

What are the five main nerves emerging from the brachial plexus?

Answer 18

Musculocutaneous 
Median
Ulnar 
Radial
Axillary

Question 19

What are the three trunks?

Answer 19

Upper
Middle
Lower

Question 20

What are the two divisions of the brachial plexus?

Answer 20

Anterior

Posterior

Question 21

What are the three cords of the brachial plexus?

Answer 21

Lateral
Medial
Posterior

Question 22

What does the lateral cord divide into?

Answer 22

Musculocutaneous nerve

Median nerve

Question 23

What does the medial cord divide into?

Answer 23

Ulnar nerve

Median nerve

Question 24

What does the posterior cord branch into?

Answer 24

Axillary nerve

Radial nerve