Compounds that diffuse passively across the blood-brain barrier
A) are lipid soluble.
B) do so in proportions equal to their presence in the bloodstream.
C) are water soluble.
D) move equally freely in both directions.
E) None of the answers are correct.
A) are lipid soluble.
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Which of these describes secondary hypersecretion of hormone X?
A. Cells of a growing tumor manufacture hormone X in unregulated fashion. B. A growing tumor secretes hormone Y, which stimulates the gland that secretes hormone X. C. Negative feedback from a tumor that hypersecretes hormone Z inhibits the gland that secretes hormone X. D. Hormone X is secreted by a growing tumor that is in the anterior pituitary gland. E. Hormone X is secreted in unregulated fashion by a tumor growing in a tissue that does not normally secrete hormone X.
What is the longest vein commonly used in grafts in coronary bypass surgery?
A) Common iliac vein B) Great saphenous vein C) Femoral vein D) Deep femoral vein E) Inferior vena cava
The ________________________________________ and respiratory systems control pH of the blood
Fill in the blank(s) with correct word
The outward movement of sodium ions rapidly restores the negative resting potential
a. True b. False Indicate whether the statement is true or false