Pulmonary & CV Systems

Question 1

Thorax Anatomy: Locate Suprasternal Notch

Answer 1

Question 2

Thorax Anatomy: Locate Clavicular Notch

Answer 2

Question 3

Thorax Anatomy: Locate Mid Clavicular Line

Answer 3

Question 4

Thorax Anatomy: At what rib does the sternal angle lie?

Answer 4

@ Rib #2

Question 5

How Many Ribs are “TRUE”?

Answer 5

The first 7 ribs are true.

Question 6

What are the 2 major muscles of INSPIRATION

Answer 6

Diaphragm (primary muscle) & External Intercostal (11 muscles on each side of sternum)

Question 7

What does inspiration do to Intra-Thoracic pressure?

Answer 7

Causes a reduction in pressure.

Question 8

Contraction of the external intercoastal muscles move the ribs how?

Answer 8

Contraction pulls the lower rib up and out (“elevates” the rib)

Question 9

When the diaphragm contracts, does it increase or decrease pressure in the thoracic cavity?

Answer 9

decreases pressure

Question 10

Name 7 muscles of accessory inspiration.

Answer 10

SCM, Scalene, Upper Trap, Pec Major/Minor, Lat, Serratus Posterior Superior, Thoracic Erector Spinae

Question 11

What are the 2 major muscles of EXPIRATION

Answer 11

Abdominal muscles + Internal Intercostals (11 internal intercostal muscles on each side of sternum)

Question 12

What is the function of the abdominals during expiration?

Answer 12

Raise intraabdominal pressure to assist thoracic cage to empty lungs.

Question 13

What is the function of the internal intercostal during expiration?

Answer 13

Compress the thoracic cavity by pulling the ribs together to help assist emptying the lungs.

Question 14

What are the two handle effects replicated in breathing?

Answer 14

Bucket Handle & Water-Pump

Question 15

Which Lung has only 2 lobes & why?

Answer 15

Left Lung (b/c of heart real estate)

Question 16

Describe 4 components of the tracheobronchial tree?

Answer 16

Larynx, Trachea, Bronchi, Bronchiole

Question 17

The Right Atrium receives (oxygenated or deoxgenated) blood from where?

Answer 17

Deoxygenated blood from Vena Cava (superior & inferior)

Question 18

Diastolic Blood Pressure of the Right Atrium?

Answer 18

Normal: 0 to 8 mm HG (central venous pressure)

Question 19

The Right Ventricle receives blood from the Right Atrium via ____ valve?

Answer 19

Tricupsid Atrioventricular Valve

Question 20

The Right Ventricle ejects blood to the ______ via what valve?

Answer 20

To the lungs, via the pulmonic semilunar valve

Question 21

Diastolic Blood Pressure of the Right Ventricle?

Answer 21

Normal: 0 to 8 mm HG

Question 22

Systolic Blood Pressure of the Right Ventricle?

Answer 22

Normal: 15 to 30 mm HG

Question 23

The Left Atrium receives (oxygenated or deoxgenated) blood from where?

Answer 23

Oxygenated blood from lungs, via pulmonary veins.

Question 24

Describe a physical characteristic that makes the Left Atrium different from the Right Atrium?

Answer 24

It’s walls are thicker b/c of higher pressures (from lungs)

Question 25

What type of valve does the Left Atrium eject blood through?

Answer 25

Bicuspid Valve

Question 26

The Left Ventricle ejects blood through which valve?

Answer 26

The Aortic Valve (into the aorta to the peripheral vascular systemic circulation)

Question 27

Systolic Blood Pressure of the Left Ventricle

Answer 27

Normal: 80 to 120 mm HG

Question 28

Diastolic Blood Pressure of the Left Ventricle?

Answer 28

Normal: 4 to 12 mm HG

Question 29

Describe a differences in physical characteristic of the Left Ventricle.

Answer 29

Longer, Narrower, & 3x Thicker than the right ventricle.

Question 30

List the Cardiac Conduction in order.

Answer 30

SA Node > AV Node > Bundle of His > Purkinje Fibers