FEMALE REPRODUCTIVE SYSTEM (III)
Michael Covinsky M.D.
Gartner and Hiatt Chapter 17; Klein and McKenzie, pp 287-299
Identify the major types of the trophoblastic cells.
Identify the components of the placenta at its various developmental stages.
Identify the duct system and lobules of the breast.
Learn the changes affecting the breast in pregnancy and lactation.
amnion, anchoring villus, antrum, areolar, sebaceous gland, atretic follicle, cervical canal,
cervix, chorionic plate, chorionic villi, ciliated cells of the oviduct, corona radiata, corpus albicans, corpus
luteum, cortex of ovary, cumulus oophorus, cytotrophoblast, decidua basalis, decidual cells, endocervix,
endometrial glands, endometrium, menstruating stage endometrium: proliferative stage endometrium:
secretory stage, follicular cell, germinal epithelium, granulosa cell, granulosa lutein cells, interlobular
ducts, intralobular (alveolar) ducts, lactiferous duct and sinus, mammary gland, maternal blood supply,
medulla of ovary, membrane granulosa, myometrium, nipple, oocyte, ovary, oviduct, ampulla oviduct,
fimbriae oviduct, infundibulum oviduct, isthmus, peg cells, placenta, plicae, primary follicle, primordial
follicle, secondary follicle, secretory alveolus, stem villus, stratum basalis, stratum functionalis,
syncytiotrophoblast, theca externa, theca folliculi, theca interna, theca lutein cells, uterus, vagina, zona
1. Undergoes a series of profound morphologic changes during its short life span.
2. Is of fetal origin except for a small amount of decidua adherent to the fetal membranes and
the basal plate.
3. Fully developed measures approximately 18 x 16 x 2.3 cm and weighs 400-600 grams.
4. At the time of birth it occupies almost one third of the internal surface of the expanded uterus.
5. Fertilization of the ovum precedes implantation and development of the placenta.
a. The ovum is fertilized in the ampullar-isthmic junction of the fallopian tube.
b. Takes about 4 days to reach the uterus.
c. By this time several cell divisions have occurred and a compact clump of cells, the
, surrounded by the zona pellucida is formed.
d. A cavity appears in this solid mass of cells, after which it is called a
1. Thin-walled, consisting of a single layer of cells, the
2. There is an aggregation of cells called the
inner cell mass
, which bulges
inward from the
wall of the blastocyst into its cavity and gives rise to the embryo.
3. Remains free in the uterine cavity for only 2 or 3 days after which it becomes
implanted in the endometrium.
6. The site of implantation may be anywhere on the wall of the uterus.
a. Most commonly it is high up on the posterior wall.