Contraction of the dartos muscle
A) elevates the scrotal sac.
B) produces an erection.
C) propels sperm through the urethra.
D) moves sperm through the ductus deferens.
E) initiates seminal emission.
Answer: A
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Answer the following statements true (T) or false (F)
1. Adults have less water per pound of body weight than do infants. 2. Men tend to have less water per pound of body weight than do women. 3. Slender people tend to have more water per pound of body weight than do obese people. 4. The most important mechanism in regulating fluid balance is to adjust fluid intake. 5. The three main sources of fluid intake are the fluids we drink, the liquid in the food we eat, and the water formed by metabolic processes.
The cell organelle with a double membrane and a folded inner membrane is:
a. the nucleus b. the mitochondria c. the endoplasmic reticulum d. both a and b
Why is iron not stored or transported in its free form? In what form(s) is it stored or transported in blood?
What will be an ideal response?
The formation of lymph increases as a result of
A) increasing hydrostatic pressure in tissue fluid. B) decreasing protein concentration in tissue fluid. C) decreasing volume of tissue fluid. D) increasing osmotic pressure in blood capillaries.