Ivabrandine selectively blocks If channels in the heart. Which statement would be true concerning a patient who is taking this drug?
A) This drug would raise the blood pressure of the patient.
B) This drug would decrease contractility of the patient's heart.
C) This patient must have been suffering from bradycardia.
D) The amount of calcium entering the patient's heart cells would increase.
E) The drug would slow down this individual's heart rate.
B) This drug would decrease contractility of the patient's heart.
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A new, non-surgical alternative to vasectomy called Vasalgel is done by injecting an impassable gel into the ductus deferentia. What contraceptive effect will this have?
A. The vasectomy causes secretions that interrupt testosterone secretion from interstitial cells. B. The prostate gland will be blocked from secreting nutrients for sperm into the ductus deferentia. C. Sperm will be blocked from traveling from the testis to the urethra. D. Ciliated columnar cells will be blocked from secreting sperm-fueling glycogen.
When maintaining homeostasis, it is important to do all of the following EXCEPT
A) detect external conditions. B) control external conditions. C) generate compensatory responses to the changes. D) protect vital areas from damaging changes.
Select the correct statement about factors that influence blood pressure
A) Excess albumen transport protein production would decrease blood pressure. B) Excess red cell production would cause a blood pressure increase. C) An increase in cardiac output corresponds to a decrease in blood pressure, due to the increased delivery. D) Systemic vasodilation would increase blood pressure, due to diversion of blood to essential areas.
Although skeletal muscle fibers cannot divide, new muscle fibers are produced through the division of ________, which are mesenchymal cells that persist in adult skeletal muscle.
Fill in the blank(s) with the appropriate word(s).