Shoulder, anterior and posterior chest

Question 1

What are the pectoral region muscles?

Answer 1

1. Pectoralis major
2. pectoralis minor
3. Serratus anterior
4. Subcalviculus

Question 2

Pectoralis major

Answer 2

Origin- Clavicular head and sternocostal head
Insert- sulcus of humerus
Function= Adducts and medially rotates

Question 3

Pectoralis minor

Answer 3

Origin- 3rd and 4th rib
Inserts- caracoid process
Function= stabalises scapular, drawing in anterior inferiorly

Question 4

Subclaviculus

Answer 4

Origin- 1st rib
Insert- mid clavicle
Function= Anchors clavicle

Question 5

Serratus anterior

Answer 5

Origin- Rib 1-8 lateral
Insert - medial border of scapula
Function= rotates scapula, allows arm raised over 90^oc

Question 6

Extrinsic muscles of the shoulder

Answer 6

SUPERFICIAL

1. Trapezius
2. Latissimus dorsi

DEEP

1. levator scapulae
2. Rhomboid major and minor

Question 7

Trapezius

Answer 7

Origin- Skull and C7 to T12
Insert- Clavicle, acromion
Function= elevate and abducts

Question 8

Latissimus dorsi

Answer 8

Origin- T6-T12
Insert- Sulcus of humerus
Function= Extend, adduct and medially rotate

Question 9

Levator Scapulae

Answer 9

Origin- C1 and C4
Insert- medial border of scapula
Function= Elevates

Question 10

Rhomboid major and minor

Answer 10

Origin 
Major- T2-T3
Minor- C7- T1
Insert- Medial border of scapula 
Function= retract and rotate scapulate

Question 11

Intrinsic muscles of the shoulder

Answer 11

Supraspinatus 
infraspinatus 
subscapularis 
teres minor 
teres major 
deltoid

Question 12

What are the 4 rotator cuff muscles

Answer 12

Origin- Scapula 
Insert- Humeral head 
1. Supraspinatus 
2. infraspinatus 
3. Subscapularis 
4. teres minor

Question 13

Suprspinatus

Answer 13

Origin- Fossa of scapula
Insert- greater tubercle of humerus
Function= Abducts 0-15

Question 14

Infraspinatus

Answer 14

Origin- infraspinatus fossa
Insert- greater tubercle of humerus
Function= laterally rotates

Question 15

Subscapularis

Answer 15

Origin- Subscapular fossa
Insert- lesser tubercle
Function= Medially rotates

Question 16

Teres minor

Answer 16

Origin- Posterior scapula
Insert- Greater tubercle
Function= laterally rotates

Question 17

Teres major

Answer 17

Origin- Inferior angle of scapula
Insert- Interventricular groove of humerus
Function= adducts

Question 18

Deltoid

Answer 18

Origin- scapula
Insert- deltoid tuberosity on lateral humerus
Function= flex and extend arm at shoulder

Question 19

Parts of the scapula

Answer 19

Anterior:

• Acronium
• Corocoid process-0 hook like projection, lies underneath calvicle
• glenoid process
• Subscapula fossa- concave

Posterior:

• Coronoid process
• Acronium- projection of spine
• Glenoid process
• Supraspinatus fossa- smaller and more convex
• Infraspinatus fossa- convex

Question 20

Lateral surface of the scapula

Answer 20

glenoid process- shallow cavity that articulates with the humerus
tuberglenoid tubercle- superior glenoid fossa, attach head of biceps brachii
infraglenoid tubercle- inferior, attach head of triceps brachii

Question 21

Tubercle

Answer 21

Where muscle or ligament attaches

Question 22

Articulations of scapula

Answer 22

1. Glenohumeral

2. sternoclavicular

Question 23

Articulations of clavicle

Answer 23

1. Sternoclavicular

2. Acromioclavicular

Question 24

Glenohumeral

Answer 24

Head of humerus and glenoid fossa

Movement- axial rotation and anterior/ posterior movement

Question 25

Sternoclavicular

Answer 25

Saddle joint between the sternum manibrum and clavicle Movement: -Elevates- Shrugging or abducting about 90 -Depression- drooping shoulders and extending arm - Protraction- anterior shoulder movement -Retraction- posterior -Rotation- arm raised over head

Question 26

Glenohumeral joint

Answer 26

``` Glenoid process and head of humerus ball and socket joint Movement: -Extension -flexion -Abduction- 0-15 -Adduction -Medial and lateral rotation ```

Question 27

Axillar region

Answer 27

underneath of the glenohumeral joint at the junction of the upper limb and thorax

Question 28

Clavicle

Answer 28

Sternum to scapula | can be palpated

Question 29

Parts of the clavicle

Answer 29

Sternal end - facet for articulation with manibrum - impression of costoclavicular ligament Acromial end - Conoid tubercle- attachment of conoid ligament - Trapezoid line- attach trapezoid ligament

Question 30

Humerus parts

Answer 30

Proximal - Greater tubercle= supraspinatus, infraspinatus and teres minor - lesser tubercle= subscapularius - Head - Interubercular sulcus- groove between tubercles for biceps brachii