Human chorionic gonadotropin is secreted from cells of the
A. morula.
B. embryoblast.
C. syncytiotrophoblast.
D. zygote.
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Question 2) The hormone that signals that fertilization and implantation have taken place is
A. pluripotent prolactin.
B. human chorionic gonadotropin.
C. gonadotropin releasing hormone.
D. progesterone.
E. pre-embryonic pellucida factor.
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Question 3) . Presence of hCG in a woman's urine indicates that she is pregnant.
Indicate whether this statement is true or false.
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Question 4) The outer layer of the trophoblast that burrows into the lining of the uterus is the
A. embryoblast.
B. syncytiotrophoblast.
C. cytotrophoblast.
D. morula.
E. zona pellucida.
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Question 5) Cells within the embryoblast have the ability to differentiate into any type of cell within the body.
Indicate whether this statement is true or false.
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Question 6) The process by which a blastocyst embeds within the uterine endometrium is known as
A. cleavage.
B. morulation.
C. implantation.
D. capacitation.
E. the acrosome reaction.
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Question 7) Implantation usually begins at about the end of the first ________ of development.
A. day
B. week
C. month
D. trimester
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Question 8) Cleavage involves a series of ________ divisions and __________ in the overall size of the conceptus.
A.
meiotic; an increase
B.
meiotic; no change
C.
meiotic; a decrease
D.
mitotic; no change
E.
mitotic; an increase
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Question 9) During fertilization, the nuclei of the sperm and the ovum are referred to as _________, before they come together and fuse to form a single nucleus.
Fill in the blank with correct word.
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Question 10) Polyspermy results in the production of monozygotic twins.
Indicate whether this statement is true or false.
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