Prenatal Development in Birth Flashcards
(82 cards)
It is the period of prenatal development that takes place in the first two weeks after conception. A. Germinal Period B. Embryonic Period C. Fetal Period
A. Germinal Period
It is the period of prenatal development that occurs from two to eight weeks after conception. During this short time, every major organ takes shape, in at least a primitive form, in a process called organogenesis. A. Germinal Period B. Embryonic Period C.Fetal Period
B. Embryonic Period
Lasting about seven months, is the prenatal period between two months after conception and birth in typical pregnancies. At about 23 weeks after conception, midway through the fifth month, the fetus reaches the age of viability, when survival outside the uterus is possible if the brain and respiratory system are well enough developed. A. Germinal Period B. Embryonic Period C.Fetal Period
C.Fetal Period
The process involving the specialization of cells to perform various tasks. A. Differentiation B. Blastocyst C. Trophoblast
A. Differentiation
Consisting of an inner mass of cells that will eventually develop into the embryo. A. Differentiation B. Blastocyst C. Trophoblast
B. Blastocyst
An outer layer of cells that later provides nutrition and support for the embryo. A. Differentiation B. Blastocyst C. Trophoblast
C. Trophoblast
Its the mass of cells. A. Embryo B. Endoderm C. Mesoderm D. Ectoderm
A. Embryo
The inner layer of cells, which will develop into the digestive and respiratory system. A. Embryo B. Endoderm C. Mesoderm D. Ectoderm
B. Endoderm
The middle layer, which will become the circulatory system, bones, muscles, excretory system, and reproductive system. A. Embryo B. Endoderm C. Mesoderm D. Ectoderm
C. Mesoderm
The outermost layer, which will become the nervous system and brain, sensory receptors, and skin parts. A. Embryo B. Endoderm C. Mesoderm D. Ectoderm
D. Ectoderm
Its like a bag, or an envelope contains a clear fluid in which the developing embryo floats. A. Amnion B. Umbilical Cord C. Placentae D. Chorion E. Organogenesis
A. Amnion
It contains two arteries and one vein and connects the baby to the placenta. A. Amnion B. Umbilical Cord C. Placentae D. Chorion E. Organogenesis
B. Umbilical Cord
It consist of a disk-shaped group of tissues in which small blood vessels from the mother and the offspring intertwine but do not join.A. Amnion B. Umbilical Cord C. Placentae D. Chorion E. Organogenesis
C. Placentae
Its a membrane that surrounds the amnion and attaches rootlike extensions called villi to the uterine lining to gather nourishment for the embryo, becomes the lining of the placenta.A. Amnion B. Umbilical Cord C. Placentae D. Chorion E. Organogenesis
D. Chorion
It is the name given to the process of organ formation during the first two months of prenatal development. A. Amnion B. Umbilical Cord C. Placentae D. Chorion E. Organogenesis
E. Organogenesis
The chances of surviving outside the womb is called: A. Viability B. Differentiation C. Stem Cells
A. Viability
Early in development, every neuron starts with the potential to become any specific type of neuron; what it becomes, how it differentiates, or depends on where it migrates is called: A. Viability B. Differentiation C. Stem Cells
B. Differentiation
These are the early cells that have not yet specialized. A. Viability B. Differentiation C. Stem Cells
C. Stem Cells
In Germinal Period, Fertilization usually occurs within 24 hours of ovulation A. Day 1 B. Day 2 C. Day 3-4
A. Day 1
In Germinal Period, The single-celled zygote begins to divided 24-36 hours after fertilization A. Day 1 B. Day 2 C. Day 3-4
B. Day 2
In Germinal Period, The mass has 16 cells and is called a morula; it is traveling down the fallopian tube to the uterus. A. Day 1 B. Day 2 C. Day 3-4
C. Day 3-4
In Germinal Period, An inner cell mass forms; the entire mass is called a blastocyst and is the size of a pinhead. A. Day 5 B. Day 6-7 C. Day 8-14
A. Day 5
In Germinal Period, The blastyocyst attaches to the wall of the uterus. A. Day 5 B. Day 6-7 C. Day 8-14
B. Day 6-7
In Germinal Period The blastocyst becomes fully embedded in the wall of the uterus. It now has about 250 cells. A. Day 5 B. Day 6-7 C. Day 8-14
C. Day 8-14