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Post-Test
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1
The process whereby a sperm combines with an egg is known as:
A)ovulation
B)oogenesis
C)fertilization
D)morulation
2
After implantation in the endometrium, the cells surrounding the embryo produce _____, the presence of which is the basis for a positive pregnancy test.
A)human chorionic gonadotropin (HCG)
B)luteinizing hormone (LH)
C)cortisol
D)estrogen
3
In the _______ fetal blood exchanges molecules with the maternal blood.
A)uterus
B)vagina
C)placenta
D)umbilical cord
4
The birth of the baby occurs during the ______ stage of parturition.
A)first
B)second
C)third
D)fourth
5
The leading cause of death among the elderly is ______.
A)kidney malfunction
B)cardiovascular disorders
C)cancer
D)osteoporosis
6
The ___________ is the cap at the tip of a sperm cell that contains enzymes important in fertilization.
A)corona radiata
B)midpiece
C)acrosome
D)hyaluronidase
7
The ______________ is known as a fertilized egg.
A)oocyte
B)ovum
C)zygote
D)embryo
8
The plasma membrane of the egg is surrounded by an extracellular matrix known as the _________________.
A)corona radiata
B)blastopore
C)zona pellucida
D)chorion
9
In order to prevent polyspermy, which of the following events occur?
A)depolarization of the plasma membrane
B)corticoid granules release enzymes that make the zona pellucida become impenetrable
C)All of the above.
10
The ___________ is structure that is formed from the chorion and uterine tissues and forms the membrane of fetal blood exchange.
A)amnion
B)yolk sac
C)allantois
D)placenta
11
The extraembryonic membrane, known as the ______, provides a fluid environment for the developing embryo and fetus.
A)chorion
B)amnion
C)allantois
D)yolk sac
12
During the fourth week of development which embryonic characteristics are obvious?
A)presence of a tail
B)prominent nervous system
C)heart is noticeable and beating
D)All of the above.
13
Which of the following statements about germ layers and their derivative is incorrect.
A)ectoderm – epidermis of the skin
B)mesoderm – urinary bladder
C)mesoderm – skeleton
D)endoderm – respiratory tract
14
In androgen insensitivity syndrome, the fetus has ____ and _____ external sex characteristics.
A)ovaries; female
B)ovaries; male
C)testes; female
D)testes; male
15
Harmful chemicals such as thalidomide can cross the placenta, and this is of particular concern during the ______ period, when various structures such as limbs are first forming.
A)latent
B)embryonic
C)birthing
D)development
16
The period of fetal development is during the _______.
A)third month through the ninth month
B)first week through the sixth week
C)second week through the eighth week
D)second month through the sixth month
17
The events of labor and the expulsion of the fetus are termed _______.
A)parturition
B)contraction
C)morphogenesis
D)dilation
18
A/An _______ is a surgical procedure that is used to enlarge the birth canal.
A)amniocentesis
B)episiotomy
C)caesarian section
D)tubal ligation
19
Which of these is a contemporary theory of aging?
A)aging is genetic
B)aging is a whole-body process involving systems (e.g., the endocrine or immune system)
C)aging is mostly due to a lifetime of poor health habits
D)All of these are correct.





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