Increasing the number of recruited motor units in a muscle increases its force or strength of contraction
Indicate whether the statement is true or false
T
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Tubular reabsorption
a. involves the movement of substances from the peritubular capillaries into the tubular fluid. b. involves the movement of substances from the tubular fluid into the peritubular capillaries. c. is considered to be active if any one of the five steps of transepithelial transport is active. d. both (a) and (c) above. e. both (b) and (c) above.
Penile erection is related to changes in blood flow. How?
A. Engorgement of the penis with arterial blood compresses the veins in the penis B. Erection is produced when venous blood outflow from the penis is increased C. Increased sympathetic input to the penis leads to an erection D. Increased blood flow to the penis causes the skeletal muscle to undergo prolonged contraction E. Increased parasympathetic input leads to the release of nitric oxide and vasodilation
The difference between the glomerular capillaries (GC) and peritubular capillaries (PC) is/are:
a. GC has a larger diameter than PC b. GC is for filtration but PC for supply oxygen/nutrients to renal tissues c. GC has significantly lower hydrostatic pressure than PC d. GC is for supply oxygen/nutrients to renal tissues but PC for filtration e. GC is directly connected with the nephron tubules
A consequence of lack of vasopressin is excretion of sugar in the urine, which occurs in the condition diabetes mellitus
Indicate whether the statement is true or false.