UNIT TWO - Heart Part 1 ASN

In the pulmonary circuit .... a) body tissues receive oxygenated blood before the blood returns to the right atrium of the heart b) arteries carry oxygenated blood to the lungs c) arteries carry deoxygenated blood to the lungs d) veins carry deoxygenated blood to the lungs

c

The right ventricle a) pumps blood out of the heart through the aortic valve b) pumps blood out of the heart to the systemic circuit c) has thinner muscular walls than does the left ventricle d) is connected to the pulmonary veins e) receives blood from the left atrium through the right atrioventricular (tricuspid) valve

c

What is the purpose of the chord tendineae? a) to prevent blood from flowing into the pulmonary trunk and aorta b) to prevent leakage of blood back into the ventricles through the semilunar valves c)to keep the atrioventricular valves open during atrial contraction d) to keep the atrioventricular cusps from prolapse, preventing regurgitation

d

The ______ are a series of irregular muscular folds formed on the internal surface of the ventricles a) chord tendineae b) moderator bands c) papillary muscles d) pectinate muscles e) trabecular carneae

e

damage to the mitral valve would allow the flow of blood into the

left atrium - the mortal valve allows blood flow into the left ventricle in a normal cardiac cycle - the right atrium and ventricle do not connect to the mitral valve

Which chamber of the heart can generate the greatest pressure?

left ventricle

Which heart structure receives blood from the systemic circuit?

right atrium

Blood flow through the cardiovascular system and heart from left to right starting with the right atrium

right atrium right AV valve right ventricle pulmonary semilunar valve pulmonary trunk and arteries lung pulmonary vein left atrium left AV valve left ventricle aortic semilunar valve aorta body superior or inferior vena cava

A blockage in the pulmonary trunk would first affect which heart chamber with a buildup of blood?

right ventricle

The largest heart vein that returns deoxygenated blood from the arms to the right atrium is the

superior vena cava

Blood that is moved to and from all of the tissues of the body (with the EXCEPTION of the lungs) is transported in the....

systemic circuit

which two chambers of the heart are connected by an opening during embryonic development that seals up at birth?

the right and left atria