The _________ produces the hormone melatonin.
A) pituitary gland
B) pineal gland
C) thyroid gland
D) pancreatic gland
E) hypothalamus
Answer: B) pineal gland
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What will be an ideal response?
If the tidal volume is 500 ml and the anatomic dead space volume is 150 ml, only 350 ml of air enters the alveoli during inspiration
Indicate whether the statement is true or false
The yolk sac
A. is the fetal half of the placenta. B. becomes the umbilical cord vessels. C. provides nutrition until the placenta is formed. D. is the first site of blood cell formation.
The gender of the individual is determined at
A. gastrulation. B. fertilization. C. the third month. D. birth.