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Human Growth and Development and Embryology > 1st week of development > Flashcards

1st week of development Flashcards

1
Q
A
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2
Q

T or F
1st Week of Development is the Ovulation to Implantation
Oogenesis is not complete until reproduction occurs

A

TRUE

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3
Q

The series of changes in the ovary

A

Ovarian Cycle

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4
Q

Three Phases of the ovarian Cycle

A

Three Phases: Follicular, Ovulation, Luteal

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5
Q

T or F
High estrogen levels - increases the release of FSH
and LH

A

FALSE
High estrogen levels - inhibits the release of FSH
and LH

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6
Q

GnRH → release of FSH and LH (what phase?)

A

Follicular Phase

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7
Q

Release of a mature oocyte into the fallopian tubes

A

Ovulation

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8
Q

What Usually occurs at Day 14 of the cycle

A

Ovulation

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9
Q

T or F
Sudden LH surge at day 14, without the sudden
surge, ovulation will still happen

A

FALSE
Sudden LH surge at day 14, without the sudden
surge, ovulation will not happen

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10
Q

Transforms ruptured follicle into corpus luteum

A

Luteal

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11
Q

What secretes a significant amount of
progesterone, which make the endometrium of the uterus ready for implantation

A

Corpus Luteum secretes a significant amount of
progesterone, which make the endometrium of the
uterus ready for implantation

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12
Q

In the luteal phase, Corpus Luteum becomes the?

A

Corpus Luteum becomes the Corpus Albicans

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13
Q

T or F
Corpus albicans: the degraded corpus luteum

A

TRUE

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14
Q

The ___is extremely thick as this
prepares the body for pregnancy

A

The endometrium is extremely thick as this
prepares the body for pregnancy

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15
Q

Occurs in the ampullary region of the uterine tube

A

Fertilization

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16
Q

T or F
In ovulation phase, sperms have a hard time to swim entering the isthmus fallopian tube

A

FALSE
In follicular phase, sperms have a hard time to swim entering the isthmus fallopian tube

17
Q

T or F
In ovulation, the sperm cells have an easier time to
swim due to the chemoattractants

A

TRUE

18
Q

The trip of the sperm cell from cervix to oviduct can occur as rapidly as __minutes or as slow as __ days

A

The trip of the sperm cell from cervix to oviduct can
occur as rapidly as 30 minutes or as slow as 6 days

19
Q

Period of conditioning in the female
reproductive tract, the sperm needs to
get used to the environment

A

Capacitation

20
Q

How lng does Capacitation last?

A

Lasts approximately for 7 hours

21
Q

T or F
Only capacitated sperm can undergo
acrosome reaction

A

TRUE

22
Q

Contents of the acrosome are released
outwardly

A

Acrosome Reaction

23
Q

Release of enzymes needed to
penetrate the zona pellucida, which is
one of the barriers in the egg cell

A

Acrosome Reaction

24
Q

T or F
Acrosome is the protein

A

FALSE
Acrosome is the enzyme

25
Q

Phases of Fertilization

A

Phase 1 - Penetration of the Corona Radiata
Phase 2 - Penetration of the Zona Pellucida
Phase 3 - Fusion of the oocyte and sperm cell
membranes

26
Q

Cleavage refers to division
o This aids in rapid cell division that leads to a
multicellular embryo

A

Phase 3 - Fusion of the oocyte and sperm cell
membranes

27
Q

Releases the enzyme acrosome to enter zone of pellucida
o The phase where it needs acrosome

A

Phase 2 - Penetration of the Zona Pellucida

28
Q

Only the capacitated sperm can pass freely to
the corona radiata

A

Phase 1 - Penetration of the Corona Radiata

29
Q

Initiation of cleavage

A

a. Rapid cell division that leads to a multicellular
embryo
b. Zygote, eight-cell, blastula, cross section of
blastula

30
Q

T or F
Determination of the sec of the new individual
a. The first 22 chromosomes are autosomes
b. The 23rd chromosome is the sex hormone

A

TRUE

31
Q

16-cell embryo composed of inner and outer cells

A

Morula

32
Q

Forms into a blastocyst

A

Morula

33
Q

Inner cell mass is the

A

embryoblast

34
Q

Outer cell mass is the

A

Outer cell mass is the trophoblast

35
Q
A

Human Growth and Development and Embryology (17 decks)

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