The heart (home lecture)
Analyze the slides depicting the pathway of blood flow through the heart and pick the true statement. All veins carry poorly oxygenated blood. Veins can carry blood to and from the heart. ALL arteries carry well-oxygenated blood. Arteries ALWAYS pump blood away from the heart. Arteries can carry blood to and from the heart.
Arteries ALWAYS pump blood away from the heart.
The primary purpose of the fluid component of the pericardium is to limit expansion of the heart. True False
False
Where does the systemic circulation NOT send blood? the lungs the thorax the head and neck the abdomen
The lungs
Pick the true statement about valve function. The semilunar valves are securely anchored to papillary muscles. When the ventricles contract, blood flows through the bicuspid valve. The biscuspid and tricuspid valves prevent blood from flowing from the atria into the ventricles. The semilunar valves close when their cusps fill with blood.
The semilunar valves close when their cusps fill with blood.
The very first branches off of the aorta are the right and left coronary arteries. True False
True
In which septum is it normal to find openings in the adult? interatrial septum interventricular septum atrioventricular septum all of the above
atrioventricular septum
Major blood vessels entering or leaving the heart include all but the ___. circumflex artery inferior vena cava superior vena cava aorta pulmonary trunk
circumflex artery
The ________ layer secretes chemicals that help to regulate ionic environments and strength of contraction and serve as powerful vasoconstrictors. pericardial sac endocardium myocardium epicardium
endocardium
from some book 1. Which of the following is not important in preventing backflow of blood? chordae tendineae papillary muscles AV valves endocardium
endocardium
Place the layers of the pericardium and heart wall in order from superficial to deepest.
fibrous pericardium parietal pericardium pericardial cavity visceral pericardium myocardium endocardium
The myocardium would be the thickest in the ________. left atrium left ventricle right atrium right ventricle
left ventricle
Which valve separates the left atrium from the left ventricle? mitral tricuspid pulmonary aortic
mitral
Which circulation does not describe a pattern of blood flow through the heart? pulmonary circulation renal circulation coronary circulation systemic circulation
renal circulation
Which chamber initially receives blood from the systemic circuit? left atrium left ventricle right atrium right ventricle
right atrium
You are a red blood cell flowing through the heart. Place the following structures in order for your path, if you start in the right atrium.
tricuspid valve- right ventricle pulmonary valve- pulmonary trunk bicuspid valve- left ventricle aortic valve- aorta
Which of the following lists the valves in the order through which the blood flows from the vena cava through the heart? tricuspid, pulmonary semilunar, bicuspid, aortic semilunar mitral, pulmonary semilunar, bicuspid, aortic semilunar aortic semilunar, pulmonary semilunar, tricuspid, bicuspid bicuspid, aortic semilunar, tricuspid, pulmonary semilunar
tricuspid, pulmonary semilunar, bicuspid, aortic semilunar
