Notes in 1 Overview of CVS

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Published	10/07/2024	What is the primary function of the cardiovascular system? A. Pump oxygen to the brainB. Maintain adequate blood flow through the capillariesC. Genera…
Published	10/07/2024	Unidirectional Blood FlowA. Passive flowB. Continuous flowC. Pulsatile first, then steady slowD. Presence of valves
Published	10/07/2024	T/FThe right side of the heart has lower pressure than the left side.There is higher pressure in the aorta than in the pulmonary vein.
Published	10/07/2024	What happens if the right atrium does not fill properly?A. The right ventricle will pump less blood to the lungsB. The left ventricle will take over t…
Published	10/07/2024	Which of the following valves prevent backflow into the atria?I. Tricuspid valveII. Pulmonary valveIII. Mitral valveIV. Aortic valveA. IB. I, IIIC. II…
Published	10/07/2024	When a hole is present in the interventricular septum, it results in the following, EXCEPT:A. Some blood will flow from the left ventricle to the righ…
Published	10/07/2024	T/FContraction of individual muscle cells must be synchronized and must occur at regular intervals.A heart is considered an effective pump if it does …
Published	10/07/2024	If the mitral valve fails to close properly, what occurs?A. Blood flows back into the left atriumB. Blood flows into the right atriumC. Blood remains …
Published	10/07/2024	All of the following are true about the major actions of the heart, EXCEPT:I. Bathmotropic: excitability or irritability of the heart when a stimulus …
Published	10/07/2024	Which is correct?I. Arteries have more smooth muscles and elastic tissues than veinsII. Capillaries have no smooth muscle or elastic tissueIII. Aorta …
Published	10/07/2024	What percentage of blood from the veins fills the ventricles before the atria contract?A. 10%B. 20%C. 50%D. 80%
Published	10/07/2024	Diameter of capillariesA. <0.1mm or 5-10μmB. >5mm or 5x103 μmC. <0.001 mm or 1-2 μmD. How should I know?
Published	10/07/2024	T/FArteries are less elastic than veins and venules.Arteries are also known as capacitance vessels because they can hold more blood than veins.
Published	10/07/2024	If the SA node is damaged, what happens?A. The AV node takes over as the pacemaker B. The heart stops beatingC. The ventricles start pacing the h…
Published	10/07/2024	T/FWhen blood pools in the lower extremities for a prolonged time, it can lead to conditions such as varicose veins caused by backflow of blood.Varico…
Published	10/07/2024	T/FThe AV node delays the signal to ensure the atria empties completely.The Purkinje fibers carry the electrical signal to the ventricles.
Published	10/07/2024	What happens when the AV node is blocked?A. The ventricles contract irregularlyB. The atria stop contractingC. Blood flow to the lungs decreases
Published	10/07/2024	Cross-Sectional Area and Velocity
Published	10/07/2024	T/FTotal cross-sectional area is highest in capillaries, which is essential for nutrient and gas exchange.Cross-sectional area decreases significantly…
Published	10/07/2024	Which has the highest vascular resistance? Why?A. Small veins and venules; absence of muscle fibers and elastic tissue in their walls allow them to co…
Published	10/07/2024	What happens if ventricular contraction fails?A. Blood flow to the lungs and body decreasesB. The atria will take over pumpingC. Blood pressure remain…
Published	10/07/2024	Which structures ensure unidirectional blood flow?A. AtriaB. ValvesC. VentriclesD. Septa
Published	10/07/2024	What is the primary role of the capillaries?A. Generate blood pressureB. Exchange gases and nutrientsC. Store bloodD. Carry blood to the heart
Published	10/07/2024	T/FNormal BP: 120/80 (SP over DP)Normal Pulse Pressure: 40 mmHg (SP - DP)
Published	10/07/2024	What occurs if the Purkinje fibers are damaged?A. Ventricular contraction becomes uncoordinatedB. The atria stop contractingC. The heart rate increase…
Published	10/07/2024	What functions does blood perform?I. Transport of oxygenII. Nutrient absorptionIII. Regulation of temperatureIV. Waste removalA. IB. I, IIIC. I, III, …
Published	10/07/2024	Primary role of neutrophilsA. Allergic reactionB. PhagocytosisC. Phagocytosis and antibody productionD. Antibody production and cell-mediated immunity
Published	10/07/2024	T/FBlood pressure is higher in the arteries than in the veins.Veins have thicker walls than arteries.
Published	10/07/2024	What happens if there’s a hole in the interventricular septum?A. Blood flows between the left and right ventriclesB. Blood pressure decreases in the l…
Published	10/07/2024	Component/s of buffy coat:I. ErythrocyteII. AlbuminIII. LeukocytesIV. ThrombocytesA. I, IIB. II, IIIC. III, IVD. III
Published	10/07/2024	What substances are transported by blood?A. OxygenB. HormonesC. NutrientsD. Carbon dioxideA. IB. I, IIC. I, II, IIID. I, II, III, IV
Published	10/07/2024	Atria contracts ahead of ventricles with a total delay of how many seconds?A. There is no delayB. 0.16 secondsC. 4.16 secondsD. 1 minute
Published	10/07/2024	T/FThe atrium is a weak primer pump that contributes 20% to the ventricular filling.Even without this 20% contribution, the heart still functions.
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