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BIOLOGY 1: FOUNDATION REVIEW > Embryology > Flashcards

Embryology Flashcards

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1
Q

process that takes place in the fallopian tube

occurs when sperm cell and egg come together in the oviduct to produce a zygote (diploid - 2n)

A

fertilization

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2
Q

Growth of fertilized egg:

A
  1. fertilized egg
  2. 2 cell stage
  3. 4-cell stage
  4. 8-cell stage
  5. 16-cell stage
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3
Q

Steps in fertilization

A
  1. Fertilization
  2. Zygote formation
    * Cleave of zygote
  3. Morula (solid ball of cells)
  4. Blastula
    * Gastrulation
  5. Gastrula (3 cell layers: trilaminar)
    * Neurulation
  6. Neurula
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4
Q

solid ball of cells formed after the cleavage of a zygote

A

morula

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5
Q

hollow ball of cells formed from morula

implants in the uterus

A

blastula

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6
Q

product of gastrulation

2 cel layers: trilaminar

A

gastrula

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7
Q

3 cell layers of the gastrula

A

ectoderm
endoderm
mesoderm

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8
Q

product of neurulation of the gastrula

A

neurula

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9
Q

part of gastrula

forms nervous system (brain and spinal cord), epidermis, lens of eye, and inner ear

A

ectoderm

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10
Q 
part of gastrula
forms epithelial lining of digestive tract
lungs
liver
pancreas
A

endoderm

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11
Q

part of gastrula

forms muscles, skeleton, circulatory system, gonads, kidneys

A

mesoderm

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12
Q

site of exchange of food, oxygen, waste, and water between the fetus and mother

A

placenta

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13
Q

provides watery environment for fetus

prevents shock to embryo/fetus

A

amnoin (amniotic fluid)

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14
Q

attaches embryo to placenta

A

umbilical cord

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15
Q

membrane that surrounds the amnion

A

chorion

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16
Q

blood is oxygenated in the placenta
ductus arteriolus and foramen ovale shunt blood from the developing lungs
ductus denosus shunts blood from the developing liver

A

fetal circulation

17
Q

in a fetus, blood is oxygenated in the _______

A

placenta

18
Q

in a fetus, the ________ and _______ shunt blood away from the developing lungs

A

ductus arteriosis

foramen ovale

19
Q

the ______ shunts blood away from the developing liver in a fetus

A

ductus venosus

20
Q

the fetus receives oxygen and disposes of CO2 at the ______

A

placenta

21
Q

fetal respiration is facilitated by _______, which has a higher affinity for oxygen than does maternal hemoglobin

A

fetal hemoglobin

BIOLOGY 1: FOUNDATION REVIEW (10 decks)

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