Multiple Choice
Which of these changes occur in the fetus at the time of birth?
A) the lungs inflate
B) increased resistance to blood flow through the lungs occurs
C) the umbilical vein becomes the ductus venosus
D) the umbilical arteries become the ligamentum arteriosum
E) the foramen ovale becomes the round ligament
Correct Answer:
Verified
Correct Answer:
Verified
Q5: The second meiotic division of the oocyte
Q6: The embryonic disk<br>A)is composed of two layers
Q7: Of the 46 chromosomes in human cells,_
Q8: If two parents that are carriers for
Q9: The thyroid gland begins to develop _
Q11: The fluid-filled cavity in the blastocyst is
Q12: During the second to the eighth week
Q13: During meiosis,homologous chromosomes may exchange genetic information
Q14: The cells of the _ become the
Q15: The trophoblast<br>A)forms the embryonic part of the