In humans the wall of the left ventricle is thicker than that of the right ventricle. This adaptation is due to the fact that the left ventricle Select one: O a. pumps blood to the extremities of the body O b. pumps blood that is low in oxygen content O c. is smaller than the right ventricle O d. pumps blood to the left and right lungs

Which primitive area of the heart will give rise to theright ventricle?a. bulbus cordisb. primitive ventriclec. sinus venosusd. truncus arteriosus

Which of the following is incorrect about pulmonary circulation?  A. Pulmonary perfusion can increase during exercise with increasing the workload of right ventri. B.High distensiblity of pulmonary capillaries allow increase blood flow C. Pulmonary circulation operates at a low pressure of 15mm Hg on average  D. None of the above is Incorrect      ..

As we auscultate the heart it is imperative, we understand what part of the heart we are listening to. Cellular senescence is observed when there is obstruction of the coronary circulation to the muscle tissue of the heart. If the left anterior descending artery (a.k.a. “Widow maker”) is occluded, predict an alternative route of blood flow to the myocardium. Start from the left coronary artery.

How would the left ventricle of a patient who had had high blood pressure for many years differ from the left ventricle of a normal heart?   A it would have a larger volume of muscle   B it would have a smaller volume of muscle   C it would be smaller than the right ventricle   D chronic high blood pressure would weaken the heart valves but would have no anatomical effects on the walls of the ventricles

During emergency situations, even if the nerves to the heart have been severed, the heart rate will: Select one: a. stay the same. b. decrease. c. increase. d. lead to hypotension.

Which of the following results from a prolonged refractory period in cardiac muscle? Select one: O a. Complete tetanus O b. Atrial flutter O c. Full relaxation of the heart, allowing it to refill adequately with blood. o d. Increased heart rate O e. Summation

What is the correct order of events in the left ventricle during the systole phase of the cardiac cycle?   a. Ventricular repolarization, ventricular relaxation, 2nd heart sound, AV valve opens, blood moves in b. QRS-complex, ventricular contraction, 2nd heart sound, aortic valve opens, blood moves out c. P-wave, increased ventricular pressure, 1st heart sound, aortic valve opens, blood moves in d. QRS complex, ventricular contraction, 1st heart sound, AV valve opens, blood moves out e. QRS complex, increased ventricular pressure, AV-valve closes, blood moves out

Which chamber initially receives blood from thesystemic circuit?a. left atriumb. left ventriclec. right atriumd. right ventricle

a calcium channel blocker or an antagonist drug will produce a. vasoconstriction b. increase in blood pressure c. increase in total peripheral resistance d. reduction in cardiac muscle contractility