tailieunhanh - Digital histology an interactive cd atlas with review text phần 8

Dưới bao xoang nằm ngay bên dưới các viên nang và nhận được chất lỏng bạch huyết đến từ các mạch bạch huyết hướng tâm vào thông qua các viên nang. - Trung cấp xoang. Nằm liền kề để trabeculae. Nhận bạch huyết từ các xoang dưới bao và tiếp tục như tủy xoang tủy. Bao gồm: dây tủy của tế bào lympho B mở rộng từ bên trong vỏ não vào xoang tủy tủy. Sự tiếp tục của các xoang trung gian trong vỏ não. . | chapter 17 Female Reproductive System Components Paired ovaries Paired oviducts or Fallopian tubes Uterus Vagina Functions Produces female germ cells ova singular ovum Produces female sex hormones estrogen and progesterone Receives sperm Site of fertilization Transports female germ cells sperm and conceptus Houses and nourish conceptus during pregnancy Expels fetus at parturition Digital Histology An Interactive CD Atlas with Review Text by Alice S. Pakurar and John W. Bigbee ISBN 0-471-64982-1 Copyright 2004 John Wiley Sons Inc. 163 164 Digital Histology FIGURE . Schematic representation of the female reproductive system. Ovary General Considerations Flattened ovoid paired glands Exocrine function. Maturation and release of oocytes developing female germ cells Endocrine function. Secretion of estrogen and progesterone Subdivisions Cortex Covered with a serosa Germinal epithelium. Simple cuboidal epithelium mesothelium Tunica albuginea. Underlying dense connective tissue Contents exact contents depend on age of the ovary and the stage of the ovarian cycle Follicles. Spheres of epithelial cells surrounding an oocyte. Multiple follicles progress through a series of stages until a single follicle ruptures to release the secondary oocyte at ovulation. Follicles secrete estrogen during the first half of the ovarian cycle. Corpus luteum. Formed from the wall of the ovulating follicle after the oocyte is ovulated. The corpus luteum secretes progesterone and estrogen and is present during the second half of the ovarian cycle. Atretic follicles. Degenerating follicles that are not ovulated Corpus albicans. Degenerating corpus luteum 17. Female Reproductive System 165 Medulla. Inner region composed of connective tissue blood vessels nerves Oogenesis Oogenesis is the process by which a diploid somatic cell an oogonium in the fetal ovary becomes a haploid ovum in the adult after fertilization occurs. Stages Oogonia in the fetal ovary divide mitotically to form diploid .