Heart

Question 1

where is the heart located?

Answer 1

behind the sternum

Question 2

how many chambers are in the internal structure of the heart?

Answer 2

4

Question 3

what are the 4 chambers found in the heart

Answer 3

right atrium
left atrium
(superior atria, low-pressure areas)

right ventricle
left ventricle
(inferior ventricles, high-pressure areas)

Question 4

what are the two valves that separate the chambers and which sides are they located in? (alongside the one valve between the ventricles and the one next to it)

Answer 4

bicuspid (left side)
tricuspid (right side)
semilunar valves (center)
aortic valve (between the left ventricle and aorta)

Question 5

what supplies the heart muscle with blood carrying nutrients and oxygen

Answer 5

coronary arteries

Question 6

right atrium function

Answer 6

receives deoxygenated blood (low in oxygen high in CO2) returning from superior and inferior vena cava.

(blood is obtained from the atrioventricular valve/bicuspid)

Question 7

atrioventricular valves (bicuspid) function

Answer 7

prevents blood from flowing back into the atrium from the ventricle

Question 8

right ventricle function

Answer 8

receives blood from the right atrium and pumps it to the lungs via the pulmonary trunk and arteries

Question 9

left atrium function

Answer 9

receives oxygenated blood from the pulmonary veins

Question 10

semi-lunar valves

Answer 10

has cusps (flaps) which open in one direction in order to prevent backflow of blood from blood vessel into ventricle

Question 11

aorta function

Answer 11

carries oxygenated blood to the systemic system

Question 12

septum

Answer 12

a muscular wall which separates the ventricles

Question 13

alright, so here’s how the heart pumps blood to the lungs (pulmonary circulation loop)

Answer 13

right ventricle —> semi-lunar valve —> pulmonary trunk —> right/left pulmonary arteries —> lungs (in which it picks up oxygen from capillaries) —> (back to the heart) right/left pulmonary veins —> left atrium —> bicuspid valve —> left ventricle

Question 14

how is blood pressure measured?

Answer 14

systolic blood pressure
__________________

diastolic blood pressure

Question 15

alright, so this how the oxygenated blood travels to the rest of your body (systemic loop)

Answer 15

left ventricle —> aortic semilunar valves —> aorta —> rest of the body —> both the superior and inferior vena cava —> right atrium —> tricuspid valve —> right ventricle