In pulmonary circulation, what happens to CO2 and O2 in the blood?
A. CO2 is loaded and O2 is unloaded.
B. Both CO2 and O2 are loaded.
C. CO2 is unloaded and O2 is loaded.
D. Both CO2 and O2 are unloaded.
Answer: C
You might also like to view...
A child is infected with chicken pox (Varicella-Zoster virus), which triggers a primary immune response. The memory cells produced to suppress further attacks by chicken pox consist of
A. B cells only. B. both B cells and T cells. C. T cells only. D. neither B cells nor T cells.
Irritation of the digestive lining activates the ________ reflex, which reverses the pattern of movement of the smooth muscle in the walls of the stomach.
Fill in the blank(s) with the appropriate word(s).
Which of the following is an example of a host in the chain of infection??
A) ?Insect bite B) ?Pathogen C) ?Human body D) ?Pesticide
Lipid-soluble hormones, such as progesterone, exert their effects by forming hormone-receptor complexes that
A. activate a G protein and second-messenger cascade. B. activate adenylate cyclase. C. open ion channels in the cell membrane. D. bind to DNA and initiate transcription.