cardiovascular system

Question 1

organ that pumps blood

Answer 1

heart

Question 2

size, weight, location, and orientation of the heart

Answer 2

size: fist
weight: less than a pound
location: mediastinum, thoracic cavity
orientation: inverted triangle

Question 3

responsible for the protection and anchorage of the heart to the surrounding structures

Answer 3

fibrous pericardium

Question 4

Contains serous fluid that provides cushion and lubrication

Answer 4

pericardial cavity

Question 5

the innermost layer of the pericardium but the outermost layer of the heart wall

Answer 5

visceral pericardium / epicardium

Question 6

the main muscle that contracts and beats

Answer 6

myocardium

Question 7

innermost layer wall of the heart made of endothelial cells

Answer 7

endocardium

Question 8

difference between atrium and ventricles

Answer 8

atrium - receiving chambers
ventricles - discharging chambers

Question 9

Moon-shaped ventricle only pumps blood toward the heart

Answer 9

right ventricle

Question 10

pumps blood to the entire body

Answer 10

left ventricle

Question 11

Blood flows from the right side of the heart to the lungs and then back to the left side of the heart

Answer 11

pulmonary circulation

Question 12

oxygen-rich blood is returned to the left side of the heart is pumped out into the aorta

Answer 12

systemic circulation