Which of the following hormones exhibits a marked diurnal variation in secretion?
a. aldosterone
b. cortisol
c. thyroid hormone
d. epinephrine
e. calcitonin
B
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A small sac of gland cells arranged around a space into which they secrete their product is called a(n) __________.
A. areolus B. acinus C. ductus D. lobule E. varix
After a day of fasting during Ramadan, Amira's blood Na+ level is quite low. Which of the following is likely to occur?
A. A decrease in plasma volume, which induces a decrease in GFR and an increase in Na+ reabsorption rate B. A decrease in plasma volume, which induces a decrease in GFR and Na+ reabsorption rate C. A decrease in plasma volume, which induces an increase in GFR and Na+ reabsorption rate D. An increase in plasma volume, which induces an increase in GFR and a decrease in Na+ reabsorption rate E. An increase in plasma volume, which induces an increase in GFR and Na+ reabsorption rate
Which of the following brain waves has the highest frequency?
A. Theta B. Delta C. Beta D. Gamma E. Alpha
Which hormone stimulates the secretion of estrogen and stimulates sperm production?
A. LH B. Androgens C. FSH D. Testosterone