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Embryology > Introduction > Flashcards

Introduction Flashcards

1
Q

Embryology

A

The study of development from fertilization to birth

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2
Q

Fertilization

A

The fusion of the sperm and “egg”

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3
Q

Cleavage

A

Early divisions in the embryo

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4
Q

Blastulation

A

creation of a hollow cavity

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5
Q

Gastrulation

A

migration of cells to form major tissue layers

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6
Q

Organogenesis

A

development of organs

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7
Q

Developmental Events

A

Fertilization, Cleavage, Blastulation, Gastrulation, Organogenesis

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8
Q

Developmental Stages

A

Embryo, Fetus, Newborn

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9
Q

Early embryo

A

1st three weeks, dated by fertilization age. Fertilization to gastrulation. Cells created, but organs not yet forming.

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10
Q

Embryo organogenesis

A

Shape of structures change. Weeks 4-8. Organs form.

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11
Q

Fetus

A

9 weeks - birth. Organs have mature shape, and develop further functions.

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12
Q

Conception

A

beginning of life. Starts at fertilization

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13
Q

Pregnancy

A

the condition of a woman carrying developing offspring in her body. Lasts from fertilization to birth.

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14
Q

Conceptus

A

the zygote/embryo/fetus

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15
Q

Embryo/fetus proper

A

part of embryo/fetus that contribute to structures that remain after birth

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16
Q

Extraembryonic/extrafetal membranes

A

parts of embryo/fetus that don’t remain after birth

17
Q

Fertilization age

A

age of conceptus. Starts at fertilization. Used by embryologists

18
Q

Menstrual age

A

fertilization age + 2 weeks. imprecise

19
Q

Gestational age

A

either fertilization or menstrual age

20
Q

Trimesters

A

three three month periods dated from menstrul age. Used by medical professionals

21
Q

Carnegie Stages

A

Developmental stages in vertebrates. Only covers embryonic (not fetal) development. Categorized by visible structures, not days or size.

Embryology (22 decks)

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