The influence of blood vessel diameter on peripheral resistance is ________
A) significant because resistance is inversely proportional to the fourth power of the vessel radius
B) significant because resistance is directly proportional to the blood vessel diameter
C) insignificant because vessel diameter does not vary
D) the only factor that influences resistance
A
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The mechanical and chemical receptors that control digestive activity are located ________.
Fill in the blank(s) with the appropriate word(s).
A pH of 3 is 100 times more acidic as a pH of 5
Indicate whether the statement is true or false
Which type of cell contains large amounts of lipids?
A. Stem cell B. Macrophage C. Osteoclast D. Mast cell E. Adipocyte
The shutting of the semilunar valves occurs during which phase?
A. Isovolumetric relaxation B. Atrial contraction and ventricular filling C. Late ventricular diastole D. Ventricular ejection E. Isovolumetric contraction