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Anatomy & Physiology II - Lab > Embryonic Development > Flashcards

Embryonic Development Flashcards

1
Q

Sequence of Events of Spermatoza in Female Tract

A
  1. Immediate Transport
  2. Cervix
  3. Uterus
  4. Oviduct
  5. Fertilization
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2
Q

When do semen pass through the uterotubual?

A

After uterus before oviduct

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3
Q

What happens during immediate transport?

A
  • Retrograde loss
  • Phagocytosis
  • Entrance into cervix/uterus
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4
Q

What happens during when semen passes through the cervix?

A
  • Remove of nonmotile sperm
  • Removal of some abnormalities
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5
Q

What happens when semen passes through uterus?

A
  • Capacitation initiated
    Phagocytosis via macrophages in uterus
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6
Q

What happens when semen passes through the oviduct?

A
  • Capacitation completed
  • Hyperactive motility
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7
Q

What happens during fertilization?

A
  • Acrosome reaction
  • Spermatozoon penetrates oocyte
  • male and female pronuclei form
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8
Q

What proteins is the zona pellucida made of?

A

3 - ZP1, ZP2, ZP3

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9
Q

What does fertilization signify?

A

End of meiosis II

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10
Q

What forms the placenta?

A

Trophoblast (outer cells)

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11
Q

What becomes the embryo?

A

Inner cell mass

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12
Q

What are embryo cells called?

A

Blastomere

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13
Q

3 Germ Layers of Gastruation

A

Ectoderm
Mesoderm
Endoderm

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14
Q

What is the ectoderm?

A

Outer layer, skin + nervous syster

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15
Q

What is the mesoderm?

A

Middle layer - organs + bones

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16
Q

What is the endoderm?

A

Inner Layer - lining of hollow tubs + organs

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17
Q

What is plasmotation?

A

Formation of placenta

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18
Q

What is an Allantois

A

4th placental membrane - umbilical chord + urinary bladder

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19
Q

What is used to detect early pregnancy?

A

Human chorionic gonadotropin

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20
Q

After fertilization, what is it called day 1 through week 8?

A

Embryo

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21
Q

After fertilization, what is it called from week 9 - birth?

A

fetus

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22
Q

What are the 4 layers of the placenta?

A

Chorion
Allantois
Amnion
Yolk Sak

23
Q

What is the chorion

A

Outer - communication

24
Q

What is the allantois?

A

Umbillical chord

25
Q

What is the amnion?

A

Amniotic fluid/protection

26
Q

Who produces blood in placenta?

A

Egg sac

27
Q
A
  1. Granulosa Cells of corona radiata
  2. Zona pellucida
  3. Corticol granules
28
Q
A
  1. Male + Female Pro-Nuclei
  2. Polar Bodies
29
Q
A
  1. Zygote
  2. 4-Cell Stage
  3. Morula
  4. Early blastocyst
  5. Trophoblast
  6. Inner Cell Mass
30
Q
A

Cell Zygote

31
Q
A

2-Cell embryo

32
Q
A

4- cell embryo

33
Q
A

8-cell embryo

34
Q
A

Compacting Morula

35
Q
A

compacting morula

36
Q
A

Compact Morula

37
Q
A

Blastocyst

38
Q
A

Expanded Blastocyst

39
Q
A

Hatching Blastocyst

40
Q
A

hatched blastocyst

41
Q
A
  1. Implanting 7 day blastocystt
  2. 12-day blastocyst
  3. 16-day embryo
  4. Chorion
  5. Amrion
  6. Ectoderm
  7. Mesoderm
  8. Endoderm
  9. Allantois
42
Q
A
  1. Early Pregnancy Detection
  2. Human Chorionic Gonadotopin
43
Q
A

Chorionic Villus containing fetal capillaries

44
Q
A
45
Q

The __________ implants in the uterine wall.

A

Blastocyst

46
Q

The __________ gives rise to the epidermis of the skin and the nervous system.

A

Ectoderm

47
Q

By the ninth week of development, the embryo is referred to as a __________.

A

Fetus

48
Q

The __________ encases the young embryonic body in a fluid-filled chamber that acts to protect the developing embryo against trauma.

A

Amnion

49
Q
A
  1. Ovulation
  2. Oocyte
  3. Fertilization
  4. Zygote
  5. 4- Cell Stage
  6. Morula
  7. Early Blastocyst
  8. Implanting Blastocyst
50
Q

This portion of the blastocyst forms the embryo proper.

A

inner cell mass

51
Q

In the human, this germ cell layer gives rise to many of the organ systems, including the skeleton, skeletal muscles, walls of GI organs, urinary system, and circulatory system.

A

mesoderm

52
Q

In humans, the yolk sac ________.

A

is the site of origin for blood cells and primordial germ cells

53
Q

This embryonic membrane provides the structural basis for the umbilical cord.

A

allantois

Anatomy & Physiology II - Lab (12 decks)

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