NUR 2243 Exam two
- Normal blood flow through the heart
Answer
right atria - right ventricle - lungs - left atria - left ventricle - body
- what are the 4 cardiac valves
Answer
tricuspid, mitral, pulmonic, aortic
maintain for- ward flow of blood through the chambers of the heart
- tricuspid valve
Answer
valve between the right atrium and the right ventricle
- bicuspid (mitral) valve
Answer
valve between the left atrium and the left ventricle.
"FRESH TWO LEFT" get it...? ill go home.
- during diastole the valves move blood 1 / 4
Answer
from atria to ventricles
- during systole the valves
Answer
ventricles contract forcing blood to go into the lungs and body
- semilunar valves
Answer
prevent blood from flowing back into the ventricles during diastole.
- pulmonic valve
Answer
separates the right ventricle from the pulmonary artery.
- aortic valve
Answer
separates the left ventricle from the aorta.
- where does the heart receive blood + nutrients from?
Answer
coronary arterial system 2 / 4
- all coronary arteries feed
Answer
the left heart branch off of the left main coronary artery (LMCA).
- the right coronary artery
Answer
perfuses the right heart and inferior wall of the left heart.
- left main artery divides into two branches
Answer
the left anterior descending (LAD) branch and the left circumflex (LCX) branch.
- Left anterior descending (LAD)
Answer
supplies blood to left ventricle, ventricular septum, chordea tendineae, papillary muscle and the right ventricle.
- Left circumflex (LCX) branch
Answer
supplies blood to the left atrium, lateral and posterior surfaces of the left ventricle and portions of the interventricular septum
- systole
Answer 3 / 4
contraction and emptying of the atria and ventricles. (lub)
- Diastole
Answer
relaxation and filling of the atria and ventricles. (dub)
- mean arterial pressure MAP
Answer
Must be at least 60 mm Hg to maintain adequate blood flow through coronary arteries and perfuse major organs (brain)
- cardiac output
Answer
heart rate x stroke volume
- heart rate
Answer
the number of times the ventricles contract each minute
- stroke volume
Answer
the amount of blood pumped by a ventricle with each beat
- / 4