Term
| Barriers of Sperm entry on the oocyte |
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Definition
Cells of the corona radiata
Zona Pellucida
Cell Membrane |
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Term
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Definition
Embryonic stage of 12-16 blastomeres
*each cell now begins distinct developmental pathways |
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Term
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Definition
Hollow ball of cells
Cell wall is the trophoblast with an ICM in the blastocoele |
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Term
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Definition
| Day 21-25 of the menstural cycle when implantation must occur |
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Term
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Definition
| Forms at site of implantation, are the mitotically active cells near the inner cell layer |
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Term
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Definition
Forms at site of implantation, a multinucleatic syncytium from fusion of cytotrophoblast.
Secretes variety of steroids and has appearance of a steroid producing cell
Grows in columns and villi into the endometrium |
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Term
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Definition
| Name of the endometrium following implantation |
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Term
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Definition
| 10-12 days PF, the chorion and the amnion fuse |
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Term
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Definition
Trophoblast grows into the endometrium and erodes the spiral arteries and uterine glands forming vacuoles (lacunae).
Establishment of the uteroplacental circulation
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Definition
| Villous elaborations that become more apparent toward the desidua basalis as the fetus grows |
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Definition
| Solid core of cytotrophoblasts covered with syncytiotrophoblast |
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Term
| Secondary chorionic villi |
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Definition
| a loose core of mesoderm derived from the chorionic plate extends through the center of the cytotrophoblast layer |
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Term
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Definition
capillaries from the developing embryo grow into the mesoderm core
Have smooth muscle, fibroblasts, and Hofbauer cells (macrophages) |
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Term
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Definition
| Chorionic villi that reach all the way across the maternal lacunae and make contact with the maternal decidua |
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Definition
| villi that do not reach the maternal decidua but terminate in the lacunae |
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Term
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Definition
trophoblast derived scout cells that migrate away from the villous tree into the maternal desidua
Function in seeking out spiral arteries and increasing the blood supply to the placenta |
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Term
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Definition
| loose tubular structure of placental villi clustering around the entrance of each spiral artery |
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Term
| Fetal/maternal blood barrier |
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Definition
snycytiotrophoblast
cytotrophoblast (if present)
basal lamina of trophoblast
basal lamina of endothelial cell
endothelial cell of villus capillary |
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Definition
| produced by the placenta, it maintains the corpus luteum during early pregnancy |
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Definition
| produced by the placenta, it promotes mammary duct proliferation |
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Term
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Definition
| one leads from each lobe of the mammary gland |
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Term
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Definition
widening of the lactiferous duct just beneath the areola.
Transitions from simple columnar to double layer of cuboidal
Keeps milk product "at the ready" for breastfeeding |
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Term
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Definition
| cause growth of alveoli and lobules in mammary gland during pregnancy |
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Term
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Definition
| cause growth of mammary gland ducts during puberty |
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Term
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Definition
| Causes lactation of the mammary gland |
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Term
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Definition
Pre-milk substance secreted that is richer in proteins and antibodies
Also lower in fat and carbs |
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Term
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Definition
stimulates direct secretion of milk through contraction of the myoepithelial cells
Also inhibits GnRH (to prevent another pregnancy) |
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