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BIO 2402- A&P 2: CHAPTER 29: DEVELOPMENT, PREGNANCY, & HEREDITY SMARTBOOK ASSIGNMENT
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BIO 2402- A&P 2: CHAPTER 29: DEVELOPMENT, PREGNANCY, & HEREDITY SMARTBOOK ASSIGNMENT
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BIO 2402- A&P 2: CHAPTER 29: DEVELOPMENT,PREGNANCY, & HEREDITY SMARTBOOK ASSIGNMENT
The physiological conditioning a sperm must undergo before it can accomplish fertilization is
called _________________ . - (ANSWER)Field 1: capacitation
What factor allows sperm to penetrate the corona radiata?
Multiple choice question.
electrical impulses
their motility
the acrosomal reaction
hormones secreted by sperm - (ANSWER)their motility
The diploid cell formed by the fusion of two pronuclei is called a ______.
Multiple choice question.
zygote
blastocyst
morula - (ANSWER)zygote
The process by which contact between cells is increased to the maximum is called
_______________________ . - (ANSWER)Field 1: compaction
The process which transforms a zygote into a morula is called ______.
Multiple choice question.
fertilization
cleavage
implantation
meiosis - (ANSWER)cleavage
,When does implantation normally occur?
Multiple choice question.
2 days after fertilization
1 month after fertilization
1 week after fertilization
3 weeks after fertilization - (ANSWER)1 week after fertilization
Cleavage occurs ______.
Multiple choice question.
during gastrulation
after gastrulation
before fertilization
before implantation - (ANSWER)before implantation
The inner cell layer of trophoblast is called a(n) ______.
Multiple choice question.
embryoblast
cytotrophoblast - (ANSWER)cytotrophoblast
Capacitation usually occurs ______ and lasts ______.
Multiple choice question.
in the male reproductive tract; several days
in the female reproductive tract; several minutes
in the male reproductive tract; less than a minute
in the female reproductive tract; several hours - (ANSWER)in the female reproductive tract;
several hours
The two layers of a bilaminar germinal disc are ______.
Multiple choice question.
,the cytotrophoblast and syncitiotrophoblast
the hypoblast and epiblast
the ectoderm and endoderm
the trophoblast and embryoblast - (ANSWER)the hypoblast and epiblast
True or false: Before fertilization can occur, a sperm cell must penetrate the corona radiata and
the zona pellucida.
True false question.
True
False - (ANSWER)True
The extraembryonic membrane that is an early site for blood cell formation in humans is the
______.
Multiple choice question.
yolk sac
amnion
chorion
placenta - (ANSWER)yolk sac
Compaction leads to the formation of a ______.
Multiple choice question.
trophoblast
morula
germ layer
zygote - (ANSWER)morula
Select all that apply
The functions of the placenta include the ______.
Multiple select question.
, production of estrogen and progesterone
exchange of nutrients between the maternal and fetal blood
production of hCG
production of antibodies
exchange of waste products between the maternal and fetal blood - (ANSWER)production of
estrogen and progesterone
exchange of nutrients between the maternal and fetal blood
exchange of waste products between the maternal and fetal blood
The zona pellucida around the blastocyst ______ to prepare for implantation.
Multiple choice question.
becomes harder
breaks down - (ANSWER)breaks down
The portion of the trophoblast that first burrows into the endometrial lining is the ______.
Multiple choice question.
morula
germ layer
syncytiotrophoblast
cytotrophoblast - (ANSWER)syncytiotrophoblast
When does the bilaminar germinal disc develop?
Multiple choice question.
right after the three primary germ layers are complete
during organogenesis
during the second week of development
right before implantation - (ANSWER)during the second week of development
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