Briefly describe phenylketonuria (PKU)
A) PKU is the accumulation of uric acid crystals due to an inability to catabolize purines.
B) PKU is the accumulation of ketone bodies due to the breakdown of fatty acids and amino acids.
C) PKU is an inherited metabolic disorder resulting from an inability to convert phenylalanine to tyrosine.
D) PKU occurs as a result of inadequate protein intake.
E) PKU is an eating disorder that involves excessive food consumption followed by purging.
Answer: C
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During prolonged fasting, the kidneys produce glucose from noncarbohydrate sources
Indicate whether this statement is true or false.
Which of the following is the correct order of blood supply to the kidneys?
A) renal artery, segmental arteries, interlobular arteries, arcuate arteries, interlobar arteries, efferent arteriole, glomerulus, afferent arteriole B) renal artery, segmental arteries, interlobar arteries, arcuate arteries, interlobular arteries, afferent arteriole, glomerulus, efferent arteriole C) renal artery, interlobar arteries, arcuate arteries, segmental arteries, interlobular arteries, efferent arteriole, glomerulus, afferent arteriole D) renal artery, interlobar arteries, interlobular arteries, arcuate arteries, segmental arteries, afferent arteriole, glomerulus, efferent arteriole E) renal artery, arcuate arteries, interlobular arteries, segmental arteries, afferent arteriole, glomerulus, efferent arteriole, interlobar arteries
The hormone that plays a pivotal role in setting the metabolic rate and thus impacting body temperature is
A) somatotropin. B) thyroxine. C) calcitonin. D) parathyroid hormone. E) glucagon.
What has to happen to the external urethral sphincter to allow urination?
A) it must be unconsciously stimulated to contract B) it must be unconsciously stimulated to relax C) it must be consciously stimulated to contract D) it must be consciously stimulated to relax