Anatomy Notes

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Department
Anatomy and Cell Biology
Course
Anatomy and Cell Biology 3319
Professor
Peter Merrifield
Semester
Winter

Description
Anatomy NotesApr 312 Female reproductive systemfunction Produce ova secrete sex hormones receive spermatogonia site for fertilization implantation and development facilitate parturition birth and provide nourishment for infant The primary sex organs in females are the gonads ovaries The ovaries produce gametes ova and secrete sex hormones estrogen progesterone The secondary sex organs are involved in successful fertilization and development and they include the external genitalia vagina uterine tubes uterus and mammary glands The structures of the reproductive system are covered by a layer of parietal peritoneum so these structures are considered extraperitoneal The uterine tube uterus and vagina are also considered the accessory ducts Ovaryinternal structure The ovaries lie against the bony lateral wall of the true pelvis The ovaries are retroperitoneal but are surrounded by the peritoneal cavity and are held in place by mesenteries and ligaments derived from the peritoneum The ovary is surrounded by a fibrous capsule called the tunica albuginea which is covered by a cuboidal epithelium called the germinal epithelium The ovary is divided into an outer cortex and an inner medulla The medulla contains blood vessels nerves and lymphatics that enter the ovary through the hilum a slit in the anterior surface where the mesovarium attaches The cortex is where the developing gametes or oocytes are located Oocytes are contained within saclike multicellular structures called follicles First there are primordial follicles and one of these is chosen each month and it becomes a primary follicle Granulosa cells are part of the follicle and they surround the oocyte The primary follicles then become secondary follicles and a cavity called an antrum begins to form A mature ovarian follicle is also called a graffian follicle Eventually the mature ovum ovulated oocyte is released into the peritoneal cavity but it is quickly picked up by the fimbriae of the uterine tube The ovulated ooc
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