Chest

Question 1

O: Pectoralis major

Answer 1

clavicle and costal cartilages of upper ribs

Question 2

I: Pectoralis major

Answer 2

proximal end of the humerus

Question 3

F: Pectoralis major (3)

Answer 3

1) medial rotation of arm
2) adduction of arm (from abducted position)
3) inhalation by expanding chest (accessory respiratory muscle)

Question 4

N: Pectoralis major

Answer 4

brachial plexus

Question 5

O: Pectoralis minor

Answer 5

ribs 3-5

Question 6

I: Pectoralis minor

Answer 6

coracoid process of scapula

Question 7

F: Pectoralis minor

Answer 7

anteroinferior tip of shoulder

Question 8

N: Pectoralis minor

Answer 8

brachial plexus

Question 9

Where is the serratus anterior?

Answer 9

between scapula and ribs

Question 10

O: Serratus anterior

Answer 10

ribs 1-9

Question 11

I: Serratus anterior

Answer 11

medial border of scapula

Question 12

F: Serratus anterior

Answer 12

prime mover of protraction of scapula, stabilizes scapula to chest wall so that the scapula can be the attachment site for other muscles)

Question 13

N: Serratus anterior

Answer 13

brachial plexus (long thoracic nerve)

Question 14

What are the three layers of the intercostal muscles? (3)

Answer 14

1) external intercostal
2) internal intercostal
3) innermost intercostal

Question 15

O: External intercostal

Answer 15

inferior border of rib above

Question 16

I: External intercostal

Answer 16

superior border of rib below

Question 17

F: External intercostal

Answer 17

elevation of rib below

Question 18

N: External intercostal

Answer 18

intercostal nerves

Question 19

O: Internal intercostal

Answer 19

superior border of rib below

Question 20

I: Internal intercostal

Answer 20

inferior border of rib above

Question 21

F: Internal intercostal

Answer 21

depression of rib above

Question 22

N: Internal intercostal

Answer 22

intercostal nerves

Question 23

O: Diaphragm (3)

Answer 23

1) xiphoid process
2) lower ribs
3) lumbar vertebrae

Question 24

I: Diaphragm

Answer 24

dense connective tissue called central tendon towards the middle of the diaphragm

Question 25

F: Diaphragm

Answer 25

1) breathing 2) going to washroom 3) reflexes such as coughing

Question 26

N: Diaphragm

Answer 26

phrenic nerve from cervical plexus

Question 27

What are the openings in the diaphragm for?

Answer 27

1) inferior vena cava 2) esophagus 2) aorta

Question 28

Which bones does the diaphragm insert into?

Answer 28

Does not connect to any bones

Question 29

What happens when the diaphragm contracts?

Answer 29

increases volume and decreases chest pressure but decreases abdominal cavity pressure

Question 30

Prime mover for protraction of scapula

Answer 30

Serratus anterior