MEDT200 Lecture Notes - Lecture 8: Human Chorionic Gonadotropin, Lactiferous Duct, Vaginal Bleeding

• School: University of Delaware
• Department: Medical Laboratory Sciences
• Course: MEDT200
• Professor: Mc Lane Mary Ann

Document Summary

Union of the nucleus of ovum and sperm cells. Ovum and sperm cells are called gametes. Each gamete contains half the number of chromosomes of a normal body cell. Normal number of chromosomes of every body cell 46. Ovum leaves the ovaries and travels through the fallopian tube. Fertilization takes place if sperm cells are present and unite with the ovum. Zygote 1 day post ovulation (not egg, not sperm, but unique individual) Morula 2 days post ovulation (8-10 blastomere stage[germ + a part]) Blastocyst 4 days post ovulation: inner cell mass + trophoblast. Gastrula 13 days post ovulation: endoderm, mesoderm, ectoderm. Blood cells, endometrial cells, and glandular secretions discharge from the body. Follicle stimulating hormone (fsh) causes one ovum in ovary to ripen within its follicle. With luteinizing hormone surge, egg leaves the ovary and passes into the fallopian tube. Corpus lining luteum secretes progesterone, uterus builds up. Menometrorrhagia (month + uterus + bursting forth)