The plasma clearance of a substance can be used to calculate the glomerular filtration rate (GFR) if that substance is freely filtered at the glomerulus and
a. secreted and reabsorbed by the tubules
b. neither reabsorbed nor secreted by the tubules
c. secreted by the tubules
d. reabsorbed by the tubules
e. None of the above correctly completes the sentence.
B
You might also like to view...
Anne Frank wrote a diary about the years she and a few others spent in hiding from the Nazis during World War II. These people lived in the upstairs rooms of a shop, accessible only by a hidden stairway; Anne called these quarters the Secret Annex. One day Nazis raided the shop below, but were unsuccessful in locating the hideaways or finding proof of their presence during this particular raid.
Clearly hearing what was occurring downstairs, Anne and her cohorts cowered in silence, for they feared being transported to "death camps." Later, Anne wrote that most of the residents of the Secret Annex experienced diarrhea shortly after this close call. Explain this response by their digestive systems. What will be an ideal response?
At rest, normal oxygen unloading is ________.
A. 97% B. 22% C. 39% D. 75%
In the pulmonary capillaries, the bicarbonate ion is always returned to the __________.
a. RBC b. plasma c. interstitial fluid d. alveoli
Which of the following is an example of loose irregular fibrous connective tissue?
a) ligaments b) deep fascia c) tendons d) areolar tissue