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| When the sperms nucleus enters the egg. |
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| Arise from the ovulation of more than one oocyte in a particular cycle. Different genetically. |
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| Sometimes called maternal twins. Genetically identical. |
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| A series of cell divisions without cell growth or differentiation during the first four days after fertilization. |
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| A series of physical changes that a cell goes through. |
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| During the first two weeks after fertilization, the conceptus is known as a pre-embryo because most of the cells will be part of the embryo vs. the placenta. |
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| Successive cleavages yields a ball of 32 identical cells. |
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A hollow ball of cells which has:
an outer sphere of cells called a trophoblast
a hollow central cavity
a group of inner cells called the inner mass. |
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| The process by which the blastocyst becomes buried in the endometrium. |
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| What the mass is called when the inner cell mass separates from the blastocyst, creating a second hollow cavity. |
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Ectopic pregnancy
[image]
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Definition
| When a blastocyst implants in an oviduct before reaching the uterus. |
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| What the developing human is called from the beginning of week three to the end of week eight. |
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| The outermost layer that is exposed to the amniotic cavity - become the epidermis, nervous system, hair, nails, tooth enamel, parts of eye and several other organs. |
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| The middle layer which becomes muscle, connective tissue, bone, kidneys, ureters, bone marrow, testes, ovaries, lining of the blood vessels and other organs. |
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| The innermost layer which will be liver, pancreas, alveoli of lungs, linings of bladder, urethra and vagina and several glands. |
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| The innermost layer of the extra embrionic membranes - also known as the "bag of waters". |
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Definition
| Derived from the mothers interstial fluid and is in continuous exchange with it |
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| The outermost layer of the extra embryonic membranes which derived from the trophoblast and is the source of human chorionic gonadotropin (hCG). |
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| Human chorionic gonadotropin (hCG) |
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Definition
| A hormone that supports the pregnancy for the first 3 months until the placenta begins producing enough progesterone and estrogen. |
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Definition
| The entire structure that forms the embrionic tissue (chorion and choronic villi) and the maternal tissue (endometrium). |
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| The two way lifeline that connects the placenta to the embryo's circulation. |
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| Spontaneous termination of a pregnancy followed by expulsion of the embryo. |
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Stage 1: dilation
Stage 2: Expulsion
Stage 3: Afterbirth |
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| Surgical delivery of a baby. |
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| A watery milk produced by the breasts. Rich in antibodies and low in fat and lactose. |
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| Marks the beginning of adolescence by maturation of the reproductive systems and the human sexual response. |
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| The process of change associated with the passage of time. |
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| The disposable pieces of DNA tail at the end of every DNA string that do not code for any genes. |
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