Which is NOT true about the countercurrent multiplier system of the kidney?
A. It creates a hyperosmolar medullary interstitium that allows the kidneys to form hypertonic urine.
B. The descending loop of Henle is permeable to water.
C. There is active transport of sodium and chloride out of the ascending limb of the loop of Henle.
D. The ascending loop of Henle is not permeable to water.
E. The fraction of filtered NaCl reabsorbed from the ascending limb equals the fraction of filtered water reabsorbed from the descending limb.
E
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What are the differences between the diaphysis and the epiphyses of long bones?
What will be an ideal response
Bone growth occurs at the metaphysis in a series of steps. Choose the number sequence that correctly orders the steps listed below.(1) Minerals are deposited in the matrix between columns of lacunae.(2) Chondrocytes multiply and arrange themselves into longitudinal columns of flattened lacunae.(3) A region of spongy bone is produced.(4) Chondrocytes enlarge (hypertrophy) and walls between the lacunae become thin.(5) Chondrocytes die, walls between lacunae disintegrate, and osteoblasts deposit matrix.
A. 2, 5, 1, 3, 4 B. 2, 4, 1, 5, 3 C. 4, 2, 5, 1, 3 D. 1, 2, 3, 4, 5 E. 2, 1, 4, 5, 3
Chemical control of respiration is dependent on the level of carbon dioxide in the blood.?
Indicate whether the statement is true or false