Embryonic/Fetal membrane which gives rise to the amniotic fluid surrounding the baby.
Vessel that carries blood away from the heart.
Vagina (or Birth Canal)
Exit passageway to the outside of the mother's body.
Ball-like mass of cells in the embryonic period with fluid-filled (amniotic fluid) center.
child - One year to puberty
Embryonic/Fetal membrane that surrounds the amnion.
Structures in the nucleus of a cell that contain the genes (responsible for heredity) for genetic expression.
Deoxyribonucleic acid, the molecular basis for heredity, it is present in chromosomes.
A gene that produces a recognizable effect in the organism.
External primary germ layer, gives rise to: Nervous Tissue, Epidermis & its appendages, & Linings of mouth and anal canal.
(Tubal Pregnancy is an example) -
Anytime a fertilized egg attempts to develop outside of the uterus. Most common is a tubal pregnancy.
Study of Human Anatomy before Birth.
Fertilization through 8th week (through the 2nd Lunar Month or 56th day).
Internal primary germ layer, gives rise to: Epithelium of
Alimentary Canal/Digestive System (other than the mouth and anal canal), Respiratory System (other than nose), Urinary Bladder, & Urethra.
Mucous lining of the uterus, layer which thickens each month in anticipation of receiving fertilized egg.
Connects between the Ovary and the Uterus. This is where fertilization generally takes place.
Female sex cell, also called the egg, ova, ovum.
Union of the Sperm and the Egg.
Zygote, after the sperm and the egg unite.
From the 9th week (3rd Lunar Month or the 57th day) through Birth.
Ball-like mass of cells in the embryonic period with hollow
Portion of a DNA molecule, the hereditary unit occupying a fixed position in the chromosome; capable of reproducing itself at each cell division and of managing the formation of a protein.
The time required for prenatal development.
Heart Beats (Audible)
When the heartbeats can be heard with a stethoscope, during the fourth/fifth lunar month. (Fetal)
Heart Beats (Inaudible)
When the heart actually begins to beat, during the first lunar month of development. (Embryo)
When the fertilized egg has attached itself to the wall of the uterus (endometrium).
End of 4th week to one year.
When the father places the sperm in the mother’s body.
Fine downy-like hair on the fetus that begins to appear during the fifth month of prenatal development and begins to disappear before birth.
28 Days or 4 Weeks (NOT a calendar month)
Male sex cell, sperm, spermatozoa, spermatozoon, or "the seed".
The sloughing off of the excess layers of the endometrium that has thickened in anticipation of the arrival of the fertilized egg, which never arrives. Occurs approximately once every 28 days, with the beginning of puberty through menopause.
The Menstrual Period.
the middle primary germ layer, gives rise to:
Muscle Tissue, Connective Tissue (Cartilage, Bones, Lymph and Blood Cells), Epithelium of Blood Vessels, Lymph Vessels, Kidneys, Ureters, & Body Cavity Linings.
Mulberry-like mass of cells, the result of the early cell divisions of the zygote.
newborn - Birth through 4th week.
The female sex cell, the egg.
The female sex glands produce the eggs.
The process of releasing an egg.
Approximately once every 28 days.
The part of the embryonic mass that attaches itself to the
uterus (of the mother).
When a woman is carrying a baby. (From Fertilization to Birth)
The sudden active movements of the fetus (about the 5thn month).
A gene that does not produce a recognizable effect in the
Ribonucleic acid, a component of all living cells, it carries the information from the DNA to the protein forming areas of the cell.
"Old" - Old age to death. (Note the word "Senility")
The male sex cell.
The male sex glands produce the sperm.
The attachment to the placenta (& mother) by the baby in utero. Contains 2 arteries, 1 vein, & Wharton's Jelly.
Fallopian tube, where fertilization generally takes place.
Uterus (fundus, body, & cervix)
Chamber in mother's body in which the baby develops after the egg has implanted itself.
Vessel which carries blood towards the heart.
Vanish-like, cheese-like substance on the fetus to protect it from the amniotic fluid.
Jelly-like substance surrounding the umbilical vessels.
Fluid from the undeveloped mammary glands of newborn babies (male & female).