The yolk sac
A) delivers food and oxygen to the developing organism.
B) helps keep the temperature of the prenatal world constant.
C) delivers nutrients and removes waste products.
D) produces blood cells until the organs are mature enough to take over this function.
Correct Answer:
Verified
Q8: The _ surrounds the amnion.
A) placenta
B) yolk
Q9: The groundwork is laid for all body
Q10: Which of the following statements about a
Q11: The ovum
A) measures around 1/500 inch.
B) is
Q12: The _ secretes hormones that prepare the
Q14: While the senses of sight and sound
Q15: During Michelle's _ month of pregnancy,the eyes,ears,and
Q16: During the period of the embryo,the ectoderm
Q17: The age of viability
A) is the point
Q18: The period of the zygote
A) lasts about
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