2010 FEMALE REPRO III Complete +lab II and III - FEMALE...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
FEMALE REPRODUCTIVE SYSTEM (III) Michael Covinsky M.D. Reading: Gartner and Hiatt Chapter 17; Klein and McKenzie, pp 287-299 Learning Objectives: 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. Key Words: 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 pellucida THE PLACENTA: A. Development: 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 morula , surrounded by the zona pellucida is formed. d. A cavity appears in this solid mass of cells, after which it is called a blastocyst : 1. Thin-walled, consisting of a single layer of cells, the trophoblast. 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.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/25/2010 for the course NEUROBIOLO MSI taught by Professor Rogerj.bick during the Spring '10 term at University of Texas Health Science Center at San Antonio.

Page1 / 12

2010 FEMALE REPRO III Complete +lab II and III - FEMALE...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online