In what phase is the cardiac eyele when the semilunar valves are open and ). AV

Question

In what phase is the cardiac eyele when the semilunar valves are open and ). AV valves are closed? A) atrial contraction B) ventricular filling C) isovolumetric contraction D) isovolumetric relaxation E) ventricular ejection 8. In what phase is the cardiac cycle when the semilunar valves are closed and the AV valves are open? A) atrial contraction B) ventricular filling C) isovolumetric contraction D) isovolumetric relaxation E) ventricular ejection 9. Which of the following equations correetly relates flow, pressure, and resistance? A) Flow-pressure x resistance B) Resistance flow x pressure C) Flow = pressure + resistance D) Flow-pressure-resistance 10. The contractile activity of smooth muscle cells within which type of blood vessel is primarily involved in the control of the organ blood flow and mean arterial pressure? A) arterioles B) capillaries C) arteries D) venules

Explanation / Answer

7 ) answer is E ventricular ejection

8 ) answer is B ventricular filling

9 ) answer is D flow = pressure / resistance blood flow directly praportional to the pressure difference and inversly praportional to the resistance.

10 ) answer is A arterioles

11 ) answer is D pressure reservoir

12) answer is B false

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