The blood-brain barrier is effective against the passage of ________
A) water
B) nutrients such as glucose
C) respiratory gases
D) fats
E) metabolic waste such as urea
E
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Blood cell formation is called ________.
Fill in the blank(s) with the appropriate word(s).
Aldosterone release can be triggered by the presence of the blood-borne messenger angiotensin II or by low levels of sodium, and so its secretion regulation is said to be
A. purely neural. B. both hormonal and humoral. C. both antagonistic and synergistic. D. both neural and synergistic. E. purely hormonal.
Which of the following hormones is important in stimulating water conservation in the kidneys?
A) aldosterone B) thymosin C) antidiuretic hormone D) atrial natriuretic peptide
The separation of sister chromatids occurs during
A. anaphase. B. prophase. C. metaphase. D. telophase.