Pectoral Region

Question 1

What are the bony land marks of the subclavius muscle?

Answer 1

first rib and cartilage to inferior portion of clavicle

Question 2

What are the actions of the subclavius?

Answer 2

depress scapula and stabilize

Question 3

What innervates the subclavius

Answer 3

Subclavian (C5-6)

Question 4

What are the bony landmarks of the serratus anterior

Answer 4

Superior and anterior of ribs 1-8/10 to costal side of medial border of scapula

Question 5

What are the actions of the serratus anterior

Answer 5

protraction, upward rotation of scapula

Question 6

What innervates the serratus anterior

Answer 6

long thoracic nerve (C5-7)

Question 7

What are the bony landmarks of the pectoralis minor?

Answer 7

surface of ribs 3-5 to coracoid process

Question 8

What are the actions of pectoralis minor?

Answer 8

anterior tilt of scapula, depress shoulder, forced inspiration

Question 9

What innervates the pectoralis minor

Answer 9

lateral and medial pectoralis nerve (C5-T1)

Question 10

Pectoralis major can be split into what two parts?

Answer 10

Clavicular head and sternocostal head

Question 11

What are the bony land marks of the Pectoralis major

Answer 11

lateral border of the bicipital groove, sternum, aponeurosis of the external oblique, clavicle, costal cartilage

Question 12

What are the actions of the pectoralis major

Answer 12

Flexion, adduction, internal rotation, (sternocostal helps with extension of flexed arm)

Question 13

What innervates the sternocostal portion of the pectoralis major?

Answer 13

Medial pectoralis nerve (C8-T1)

Question 14

What innervates the clavicular head of the the pectoralis major muscle?

Answer 14

Lateral pectoralis nerve (C5-C7)

Question 15

What are the joints of the pectoral (shoulder) girdle

Answer 15

acromioclavicular joint, sternoclavicular joint, glenohumeral joint, scapulothroracic joint

Question 16

What kind of joint is the scapulothoracic joint

Answer 16

pseudo joint (no ligaments, no cartilage, no joint surfaces)

Question 17

What kind of joint is the acromioclavicular joint?

Answer 17

Synovial and planer

Question 18

What kind of joint is the sternoclavicular joint?

Answer 18

Synovial and saddle joint

Question 19

What attaches at the sternoclavicular joint

Answer 19

anterior and posterior sternoclavicular ligaments

Question 20

What do the anterior and posterior sternoclavicular joints do?

Answer 20

prevent anterior and posterior movement of the clavicle

Question 21

What attaches at the top of the manubrium

Answer 21

Interclavicular ligament

Question 22

What does the interclavicular ligament do?

Answer 22

Restrict depression of clavicles

Question 23

What attaches from the first rib to the clavicle

Answer 23

Costoclavicular ligament

Question 24

What does the costoclavicular ligament do

Answer 24

restricts clavicular elevation

Question 25

What ligaments make up the Acromioclavicular joint?

Answer 25

Acromioclavicular ligament

Question 26

What does the acromioclavicular joint do

Answer 26

stabilizes AC joint locally

Question 27

What are the coracoclavicular ligaments

Answer 27

trapeziod ligament- more lateral and conoid ligament-more medial

Question 28

What ligaments make up the glenohumeral joint

Answer 28

Superior glenohumeral ligament, middle glenohumeral ligament, inferior glenohumeral ligament

Question 29

Where are the glenohumeral ligaments?

Answer 29

Anterior and posterior of the joint-leaving a space inferiorly which is where most dislocations happen

Question 30

What do the coracoclavicular ligaments do?

Answer 30

stabilize GH joint peripherally