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15 Cards in this Set
- Front
- Back
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3 Primary germ layers
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ectoderm, mesoderm, endoderm
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Functions of amnion
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- Surrounds embryo, secreting amniotic fluid
- Ruptures just before childbirth releasign fluid (breaking of waters) |
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Functions of Chorion
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-Surrounds other three embryonic layers
- Eventually becomes placenta |
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Development in month 3
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Forelimbs developed, eyelids closed, outer ear complete, bone marrow formed, blood celss formed, sex distinguishable
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Development in month 4
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Arms and hands shaped, skeleton complete, muscles exercised, ears stand out
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Development in month 5
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Fine hair covers body, increased growth, gripping relexes developed
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Development in month 6
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Respiratory movements, digestive glands beginning to function, tooth bude evident, eyebrows and eyelashes
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Development in month 7
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Greatest growth, systems functioning except respiratory
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Development in month 8
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Fat under skin, growth slowed
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Development in month 9
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Eyes open, nose formed, sucking and grasping relexes apperent, fine body hairs shed
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Effects on the mother
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Growing abdomen, enlarged breasts, increase in heart size, increased blood volume, Increased pressure on bladder
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What is AID
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Artificial Insemination by Donor
Semen which has been donated by another man is injected into the vagina. |
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What is IVF
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In-Vitro Fertilisation
A man sperm fertilizes a womans egg in a petri dish in a laboratory and then the embryo is implanted into the womans uterus |
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What is GIFT
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Gamete IntraFallopian Transfer
Eggs and sperm are mixed together and injected into the womans fallopian tube so that randomly mixed egg and sperm can fertilize and get to th uternus in the usual way |
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What is surrogacy?
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When a woman agrees to bear a child for a couple when the woman cannot bear a chold herself
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