Older red blood cells may be destroyed in the spleen.
Answer the following statement true (T) or false (F)
True
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In the clotting cascade, factor Xa helps convert prothrombin to thrombin.
Answer the following statement true (T) or false (F)
The ____ and ____ enable the kidneys to produce urine of varying concentrations and volumes depending on the body's needs
a. Na+-K+ ATPase pump, co-transport carriers b. juxtaglomerular apparatus, vasa recta c. podocytes, peritubular capillaries d. medullary vertical osmotic gradient, vasopressin e. renin-angiotensin-aldosterone system, renal pyramids
Arterial systolic pressure occurs ____________________ while arterial diastolic pressure occurs_____________________
A. at the same time as closure of the semilunar valves; at the same time as closure of the atrioventricular valves B. during the isovolumetric contraction phase of the cardiac cycle; during the isovolumetric relaxation phase of the cardiac cycle C. at the same time as the P-wave of the electrocardiogram; at the same time as the T-wave of the electrocardiogram D. when the the ventricle reaches end-systolic volume; when the ventricle reaches end-diastolic volume E. during the middle of the phase of ventricular ejection; just before the semilunar valve opens
What is a tastant?
A. A cell found within a taste bud that depolarizes when stimulated. B. A structure found within the inner ear that translates vibration into sound. C. A supporting cell in the olfactory epithelium that connects the sensations of taste and olfaction. D. A substance dissolved in saliva that causes taste cells to depolarize.