Which of the following is NOT involved in short-term regulation of blood pressure? Select one: a. Alteration in blood volume b. Baroreceptor reflex c. Chemoreceptor mechanism d. Adrenal medullary mechanism

All of the following are correct about the isovolumetric contraction, except  ____________.         A. This phase of the cardiac cycle begins with the appearance of the QRS complex of the ECG, which represents atrial repolarization and ventricular depolarization   B. It represents the time period between the closure of the AV valves and the opening of the aortic and pulmonic valves, ventricular pressure rises rapidly without a change in ventricular volume   C. The rate of pressure increase in the ventricles is determined by the rate of contraction of the muscle fibers, which is determine by mechanisms governing excitation-contraction coupling   D. Ventricular chamber geometry changes considerably as the heart becomes more spheroid in shape; circumference increases and atrial base-to-apex length increases

Heart failure occurs when   a. the cardiac output is 15 liters per minute when you are watching television   b. the cardiac output is 5 liters per minute when you are running as fast as  you can on the treadmill.    c. the cardiac outout does not change based on the energy expenditure   d. all of the above

30. Which of the following sentences is NOT true? A. Decreased blood oxygen levels triggers erythropoietin release B. albumin is the most abundant plasma protein? C. glucose is transported in blood dissolved in plasma D. angiotensin II can cause vasoconstriction E. leptin increases sensation of hunger 31. .. presents in blood vessel's ECM that provide(s) the tensile strength required to withstand pressure A. Gap junctions B. Elastin C Collagen D. Hemoglobin E Albumin 32. surrounds a bundle of nerve fibers A. Neurium B. Perineurium C Epineurium D. Endoneurium E. None of the above 33. Which of the following sentences is NOT correct? A. Cancellous bone (trabecular) is spongy bone B. White fibers make up fast-twitch muscle C. Muscle spindle is a type of receptor that detects muscle length D. Exocrine gland secretes its product directly into the bloodstream E. When an action potential is generated within a motor neuron, every muscle cell of the motor unit is stimulated to…

which of the following is TRUE for a cardiac cycle?    a. it only includes pressure changes that occur during one heart beat  b. it refers to volume changes that occur in one heart beat  c. it includes mechanical events during one complete heart beat  d. it refers to electrical activity of the heart during one complete heart beat

Which of the following is true of the EKG?   A. Depolarization of the atria cannot be seen on the EKG B. Repolarization of the atria cannot be seen on the EKG. C. Depolorization of the ventricles cannot be seen on the EKG. D. Repolorazition of the ventricles cannot be seen on the EKG.

Which of the following is NOT a difference in blood between males and females? A.Males have a larger volume of blood than females B.Males have a higher hemocrit percentage of plasma than females C. males have more erythrocytes than females D. All of the above are true

If somebody was doping on EPO and you analyzed a sample of their blood you would likely find: A. higher than normal percentage of plasma B. A higher than normal percentage of circulating reticulocytes C. lower than normal amount of blood viscosity. D. increased chance of anemia

Patients with a history of heart failure often get this history from chronic hypertension. Chronic hypertension leads to a condition called hypertrophic heart disease, or hypertrophic cardiomyopathy. This means that the heart muscle gets bigger, allowing less room for it to fill with blood. If these patients take beta blockers, such as metoprolol, it will benefit them because the heart will not overwork and grow in size. However, if a patient has pulmonary edema, how could the beta blocker make this patient worse?

Ventricular cardiomyocytes under sympathetic drive during a bout of exercise...   a. Would collectively make more force than at rest due to recruitment of more cardiomyocytes b. Would relax faster due to phosphorylation of the cardiac ryanodine receptors c. Would pump out more SV despite a decrease in EDV d. Would show an increased rate of myosin ATPase activity due to phosphorylation of the calcium ATPase pumps e. Would have elevated levels of cAMP and kinase activity