What is the primary regulator of the magnitude of alveolar ventilation under normal circumstances?
A. The PO2 of the arterial blood, which is monitored by peripheral chemoreceptors
B. The H+ concentration in the brain extracellular fluid, which is monitored by central chemoreceptors
C. The H+ concentration in the arterial blood, which is monitored by central chemoreceptors
D. The PO2 of the arterial blood, which is monitored by central chemoreceptors
E. Stretch receptors in the lung
Answer: B
You might also like to view...
Nociceptors are sensitive to ____
a. sound b. osmolarity c. pain d. light e. scent
Excessive accumulation of bilirubin in the body produces the condition of ____________________
Fill in the blank(s) with correct word
Which is TRUE about hormone binding to the proteins found in plasma?
A. Steroid hormones do not bind to plasma proteins. B. The binding proteins that transport hormones are hormones themselves. C. The tighter that a hormone binds to a carrier protein in the plasma, the faster the body can usually get rid of that hormone. D. Hydrophobic hormones like steroid and thyroid hormones need binding proteins because they are not very soluble in the blood plasma. E. Only peptide-type hormones can bind to the carrier proteins found in the plasma.
Which of the following is NOT normally a route of transmission of HIV/AIDS?
A. unprotected sexual intercourse with an infected partner B. kissing or contact with items contaminated by the saliva of an infected individual C. across the placenta from an infected mother to her fetus during pregnancy or delivery D. via breast milk during nursing E. transfer of contaminated blood or blood products from one person to another