A chromosomal aberration in which part of a chromosome is lost is known as ________
A) deletion
B) translocation
C) crossing-over
D) inversion
A
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Cerebrospinal fluid is produced by the
A) pia mater. B) frontal sinuses. C) ventricles. D) choroid plexus. E) arachnoid villi.
Vitamin ________ is formed in the skin when it is exposed to sunlight
A) A B) B C) C D) D E) E
Which of the following statements about the regulation of the glomerular filtration rate (GFR) is FALSE?
Elevation of blood pressure increases the GFR. Renin is released when the GFR is low. Constriction of the afferent arteriole increases the GFR. Constriction of the efferent arterioles increases the GFR.
A 45-year-old woman has a blood pressure of 140/90 mm Hg. Her doctor recommends a low-salt diet. What would you predict her serum [Na+] and ECF volume would be compared with their values on her previous diet?
(Note: Assume she has reached a new steady state on her new diet.) Serum [Na+] ECF volume A. No change ? B. No change No change C. No change ? D. ? No change E. ? ?