Author: Anonymous

Early in her care, she was treated to lower the heart rate. Discuss three drug mechanisms to lower the heart rate, based on three different types of receptors which influence heart rate. Justify the administration of norepinephrine following an episode of hypotension. Specifically, state how the drug impacts contractility, stroke volume, and mean arterial pressure. Be sure to do the following; a) Identify the type of receptor to which norepinephrine binds on a myocardial (contractile) cell. b) Predict intracellular calcium levels after receptor-ligand binding (increase/decrease) and identify two resulting mechanisms that lead to those changes.

Which of the following is generally discouraged in older adults, due to the sudden rise in blood pressure it can create?

An athlete is used to performing high-intensity aerobic exercise; however, she will now be changing to longer-duration, submaximal exercise on a regular basis. This change in training strategy will typically result in what changes concerning energy supply?

A 49-year-old woman was admitted to the hospital after experiencing recurrent episodes of shortness of breath, severe headache, sweating, and abdominal pain. These episodes occurred primarily during physical exertion. Vitals were taken and included a BP recording of 160/95 mm Hg. She underwent a series of exams including imaging studies that showed a tumor on her adrenal medulla. When this tumor suddenly releases a large amount of epinephrine into the circulation, the patient’s heart rate would be expected to

A 45-year-old woman comes to her family physician for a yearly checkup. Her BP is noted to be the same while lying or while standing. What changes in preload and heart rate most likely occur in going from lying to standing positions?

The excess postexercise oxygen consumption experienced by athletes is caused by all of the following EXCEPT

Ivabrandine selectively blocks If channels (funny channel in SA node) in the heart. Which statement would be true concerning a patient who is taking this drug? 

A 60-year-old woman comes to her physician for routine checkup. She has a history of MI 7 years previously but currently has no complaints or symptoms. She undergoes an echocardiogram. Which measurement would be the best index of preload in this woman?

Find the limitlimx→-2×2-4x-2{“version”:”1.1″,”math”:”limx→-2×2-4x-2″}

The Krebs cycle occurs in which portion of the cell?