When Tanous exercises, his muscles need a greater flow of blood. Which of the following substances are the muscles likely to secrete locally?
A) nitric oxide
B) histamine
C) prostaglandins
D) growth hormone
A
You might also like to view...
When you squeeze an air-filled party balloon you increase its
What will be an ideal response?
The root cortex is composed mostly of collenchyma cells. Indicate whether the statement is true or false
How do protists provide evidence for the step-wise evolution of mitosis?
A. Only meiosis occurs in protists. B. In some protists the nuclear membrane fails to break down during mitosis. C. Mitosis has not been observed in any protist species. D. Protists use conjugation instead of mitosis.
For an atom to achieve maximum stability and become chemically inert, what must occur?
A) Ionization occurs. B) Its outermost energy shell must be completely filled with electrons. C) The number of electrons must equal the number of protons. D) Electron pairs are shared.