D. IV fluids increase intravascular volume, distending the atria and increasing the heart rate. A nurse observes a cardiologist multiplying the heart rate by stroke volume. What is the cardiologist measuring? a.Vascular resistance b.Preload c.Cardiac output d.Ejection fraction C. Cardiac output is found by multiplying the heart rate times stroke volume A nurse recalls the internal lining of the cardiovascular system is formed by what tissue? a.Tunica adventitia b.Connective c.Mesothelium d.Endothelium D. the endothelium is the lining of the blood vessels A patient researches baroreceptors online. Which information indicates a good understanding? Baroreceptors are located in the: a.Renal artery b.Superior vena cava c.Carotid sinus d.Circle of Willis C. Baroreceptors are found in the carotid sinus A nurse is evaluating the direct end effect of the renin-angiotensin-aldosterone system. Which principle should the nurse remember? a.Angiotensin II causes systemic vasoconstriction. b.Renin promotes the excretion of sodium and water in the renal tubules. c.Aldosterone increases renal retention of water only. d.Angiotensin I promotes sodium and water reabsorption by the kidneys. A. Angiotensin II is a potent vasoconstrictor When a patient wants to know about the renin-angiotensin-aldosterone system, what is the nurses best response? Conversion of angiotensin I to angiotensin II happens in the: a.Lungs b.Liver c.Kidneys d.Heart A. Angiotensin I is converted to angiotensin II by angiotensin converting enzyme in the lungs.
A nurse is discussing the different types of regulation. Which regulation is the nurse describing? Local myogenic regulation of blood vessel diameter and thus blood flow through a vessel is an example of: a.Autonomic regulation b.Somatic regulation c.Autoregulation d.Metabolic regulation C. The myogenic hypothesis proposes that autoregulation originates in vascular smooth muscle, presumably of the arterioles, as a response to changes in arterial perfusion pressure. The thoracic lymphatic duct drains into the: a.Left subclavian artery b.Right atrium c.Right subclavian vein d.Left subclavian vein D. The thoracic duct drains lymph into the left subclavian vein. Increases in which of the following would cause the nurse to assess for decreased blood flow? (Select all that apply.) a.Blood viscosity b.Blood vessel diameter c.Blood pressure d.Blood vessel length A, C, D. Resistance to flow is generally greater in longer tubes because resistance increases with length. Blood flow varies inversely with the viscosity of the fluid. Thick fluids move more slowly and experience greater resistance to flow than thin fluids. Increased blood pressure decreases blood flow because resistance in increased. Important mechanisms for maintaining venous return to the right atrium include (elect all that apply): a.Cardiac output b.Atrioventricular (AV) valves c.Skeletal muscle contraction d.Blood volume e.Vascular tone A, B, C, D.
You've reached the end of your free preview.
Want to read all 26 pages?
- Fall '17
- keisha lovence