The Heart

Question 1

Functions of Cardiovascular system

Answer 1

• Maintain homeostasis
• Transport of waste, hormones, gasses, cells
• Regulation of body temperature

Question 2

Components of Cardiovascular system

Answer 2

• The heart = Pump
• Arteries and veins = Vessels
• Capillaries = Resource exchange
• Lymphatic vessels = Drainage system

Question 3

Artery

Answer 3

The vessel that carries blood away from the heart

Question 4

Vein

Answer 4

The vessel that carries blood towards the heart

Question 5

Where does the heart reside?

Answer 5

the mediastinum

Question 6

Pericardium

Answer 6

• Heart is contained within the pericardial cavity (formed by pericardial sac)
• parietal pericardium, pericardial cavity, visceral pericardium (epicardium)

Question 7

pericardial fluid

Answer 7

• film of fluid b/w epi and peri

- reduces friction b/w heart and peri

Question 8

Layers of the heart

Answer 8

• endocardium (interior)
• myocardium (heart muscle)
• epicardium (outer)

Question 9

What kind of valves are in the pulmonary artery and aorta?

Answer 9

semilunar valves

Question 10

diastole

Answer 10

relaxed

Question 11

systole

Answer 11

contracted

Question 12

Coronary circulation

Answer 12

• blood vessels that carry blood to and from heart cells
• CORONARY ARTERIES : supply oxygenated blood to heart/muscle
• CORONARY SINUS : carry deoxygenated blood back to right atrium

Question 13

Cardiac Output (CO)

Answer 13

• Volume pumped out by each ventricle in a minute
• avg (male) is 5000mL/min
• avg (fem) is 4500mL/min

Question 14

Equation for CO

Answer 14

CO = HR x SV

beats per min X vol of blood leaving ventricles w/ each beat