The _________ becomes part of the umbilical cord, serves as a shock absorber for the embryo, and produces formed elements of blood and germ cells for the embryo.
A) allantois
B) amnion
C) yolk sac
D) chorion
Correct Answer:
Verified
Q1: The nervous system is formed by the
A)endoderm.
B)mesenchyme.
C)ectoderm.
D)mesoderm.
Q2: Implantation is completed by the _ day
Q4: The stage at which a pre-embryo is
Q5: During the process of implantation, the enzymes
Q6: During embryonic development, the following major events
Q7: Once a sperm enters a secondary oocyte,
A)meiosis
Q8: The embryonic membranes include the following structures
Q9: Fertilization usually occurs in
A)uterine tube.
B)ovary.
C)vagina.
D)uterus.
Q10: The _ develop(s) into the germ layers
Q11: The placenta serves as an interface between
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