In the ascending limb of the nephron loop (loop of Henle), the:
A) thick segment is permeable to water but impermeable to sodium and chloride ions.
B) thin segment is not permeable to sodium ions, chloride ions, or water.
C) movement of water and solutes is passive.
D) thick segment is impermeable to water but permeable to sodium and chloride ions.
Answer: D
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Answer the following statement true (T) or false (F)
Which of the following is a function of astrocytes?
A. They circulate the cerebrospinal fluid. B. They produce cerebrospinal fluid. C. They phagocytize tissue debris. D. They form myelin in the CNS. E. They help form the blood-brain barrier.
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A. Zona pellucida B. Allantois C. Yolk sac D. Amnion
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