Cardiac Cycle and Blood Pressure

What is the term used to describe the portion of the heartbeat during which ejection takes place?

What valves remain open during atrial systole?

What is the duration of atrial systole?

What occurs during ventricular diastole?

How long does ventricular systole last?

What is the term used to describe the portion of the heartbeat during which chamber refilling takes place?

What is the thickness of the walls of capillaries?

What is the estimated surface area of all the capillaries in the entire system?

What is the average length of a capillary in the peripheral circulation?

What surrounds the endothelial cells in arterioles?

What is the function of precapillary sphincters?

What determines the operation of arteriolar smooth muscle cells?

What happens to the atria during ventricular systole?

During which phase of the cardiac cycle are both the AV valves and the aortic and pulmonic valves open?

What is the purpose of the semilunar valves?

When do the aortic and pulmonic valves close?

What happens when the pressure in the left ventricle rises above the pressure in the aorta?

What is the duration of the period shown in the figure?

What allows the passage of water, inorganic ions, glucose, and amino acids through the capillary wall?

What is the main function of the venous system?

What is the result of changing venule diameter in a 70-kg person?

What type of molecules are excluded from passage through the pores in the capillary wall?

What is the characteristic of tight junctions in venules compared to capillaries?

What is the main site of diffusion in the microcirculation?

What do lymphatic vessels primarily transport?

What is the mechanism by which fluid enters the lymphatic vessels?

What is the function of lymph valves in lymphatic vessels?

What is the daily rate of fluid collection by the lymphatic vasculature?

What is the significance of the lymphatic system in plasma protein circulation?

What is the term for the fluid that enters a lymph capillary?