Pectoral Region

Question 1

The platysma muscle is _________ to the clavicle

Answer 1

Superficial

Question 2

The cephalic vein is found ___________ the deltoid & clavicular head of the pectoralis major (delto-pectoral groove)

Answer 2

In between

Question 3

The medial pectoral nerve ______ the pectoralis minor as it approaches the deep aspect of the sternocostal head of the pectoralis major muscle

Answer 3

Pierces

Question 4

The lateral pectoral nerve innervates the ____________ of the clavicular head of the pectoralis major

Answer 4

Deep aspect

Question 5

The thoracoacromial trunk __________ to the pectoralis major

Answer 5

Passes medial

Question 6

The pectoral branch of the thoracoacromial artery is _____ to the pectoralis major

Answer 6

Deep

Question 7

The pectoralis minor is _____ to the pectoralis major

Answer 7

Deep

Question 8

What are the joints of the shoulder girdle? (4)

Answer 8

Sternoclavicular, acromioclavicular , glenohumeral, scapulothoracic

Question 9

What kind of joint is sternoclavicular?

Answer 9

Saddle or seller

Question 10

What kind of joint is acromioclavicular?

Answer 10

Plane or gliding

Question 11

What kind of joint is glenohumural?

Answer 11

Ball and socket

Question 12

What kind of joint is scapulothoracic?

Answer 12

Pseudo-joint (necessary for full glenohumeral function)

Question 13

What are the two coracoclavicular ligaments and their attachments and function?

Answer 13

Trapezoid - coracoid process to trapezoid line of clavicle.
Conoid - coracoid process to conoid tubercle of clavicle.

Stabilize AC joint to limit medial displacement. Protraction and elevation.

Question 14

Name the acromioclavicular ligament attachments and function.

Answer 14

Superior aspect of acromial end of clavicle to adjacant acromion.

Stabilizes AC joint

Question 15

Name the coracoacromial ligament attachments and function.

Answer 15

Lateral border of coracoid process to acromion adjacent to clavicular articulation.

Prevents superior displacement of humeral head by forming the coracoacromial arch.

Question 16

Name the coracohumeral ligament attachments and function.

Answer 16

Base of coracoid process to anterior aspect of greater tubercle.

Reinforces superoanterior aspects of joint capsule.

Question 17

Name the costoclavicular ligament attachments and function.

Answer 17

Superior aspect of cartilage of first rib to undersurface of the clavicle

Stabilizes SC Joint, limiting elevation of clavicle.

Question 18

Name the superior transverse scapular ligament attachments and function.

Answer 18

Base of coracoid process to the medial edge of the scapular notch.

Closes off the suprascapular notch.

Question 19

Name the 3 glenohumeral ligaments, and attachments and function.

Answer 19

Superior, middle and inferior.

From upper part of medial margin of glenoid cavity to lesser tubercle and anatomical neck of humerus.

Stabilizes GH articulation.

Question 20

What are the AAI of pectoralis major?

Answer 20

Attachments- clavicle, costal cartilages, sternum and aponeurosis of the external oblique to the lateral lip of the intertuberucular sulcus of humerus.

Action- humeral adduction, FLX, and medial rotation (sternocostal portion assists with extension of the flexed arm)

Innervation- medial and lateral pectoral nerves.

Spinal Cord Segments- C5-6 (clavicular head) C7-T1 (Sternocostal head)

Question 21

What are the AAI of pectoralis minor?

Answer 21

Attachments- outer surfaces of ribs 3-5 to the coracoid process.

Actions- anterior tilt of scapula; assists with depression of the shoulder and forces inspiration.

Innervation- medial and lateral pectoral nerves.

Spinal Cord Segments- C5-T1

Question 22

What are the AAI of the subclavius muscle?

Answer 22

Attachements- 1st rib and cartilage to the undersurface of the clavicle.

Actions- depresses and stabilizes clavicle

Innervation- subclavian nerve

Spinal Cord Segments- C5-6