The ovaries form part of the female reproductive system, and attach to the fallopian tubes
Micrograph of the ovarian cortex from a rhesus monkey showing several round follicles embedded in a matrix of stromal cells. A secondary follicle sectioned through the nucleus of an oocyte is at the upper left, and earlier stage follicles are at the lower right. The tissue was stained with the dyes hematoxylin and eosin.
The process of ovulation and gamete production, oogenesis, in a human ovary.
Polycystic ovaries typically found in polycystic ovarian syndrome
Ovarian torsion. Present in rats
Ovary of a marine fish and its parasite, the nematode Philometra fasciati
Left Ovary

Organ in the female reproductive system that produces an ovum.

- Ovary

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Mixed gland that produces the gametes and sex hormones of an organism.

A pair of ovaries of Cyprinus carpio (common carp) placed in dissecting dish

The female gonad, the ovary, produces egg cells.

Endocrine gland

Endocrine glands are ductless glands of the endocrine system that secrete their products, hormones, directly into the blood.

The major endocrine glands: 
1 Pineal gland
2 Pituitary gland
3 Thyroid gland
4 Thymus
5 Adrenal gland
6 Pancreas
7 Ovary
8 Testicle
Endocrine glands in the human head and neck and their hormones

The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands.

Fallopian tube

Uterus and fallopian tubes
Histology of ciliated columnar epithelium of the Fallopian tube
Sketch of a human embryo from Gray's Anatomy; from eight and a half to nine weeks old, showing the mullerian (paramesonephric ducts), their position, and how they are becoming fused
After ovulation, the egg (oocyte) passes from the ovary (left) through the Fallopian tube to the uterus (right).
lmplantation sites resulting in normal or ectopic pregnancies
Example and location of some surgical procedures performed on the Fallopian tubes
Numbered image showing parts of the Fallopian tubes and surrounding structures: 1. ovary 2. medial surface 3. lateral surface 4. free border 5. mesovarial margin 6. tubal extremity 7. uterine extremity 8. Fallopian tube 9. distal opening of the Fallopian tube 10. infundibulum of the Fallopian tube 11. fimbriae of the Fallopian tube 12. ovarian fimbria 13. ampulla of the Fallopian tube 14. isthmus of the Fallopian tube 15. uterine part of the Fallopian tube 16. proximal opening of the Fallopian tube
Female reproductive system: 1. Vulva: 2. labia majora, 3. labia minora, 4. vestibule 5. Clitoris: (with 6. glans and 7. body) 8. bulb of vestibule 9. Vagina: 10. hymen, 11. lumen, 12. wall, 13. fornix (lateral) 14. Uterus: Parts: 15. cervix, 16. body and 17. fundus, 18. orifices: external and internal, 19. cervical canal, 20. uterine cavity; Layers: 21. endometrium, 22. myometrium, and 23. perimetrium 24. Fallopian tube: 25. isthmus, 26. ampulla, 27. infundibulum, 28. fimbria (with 29. fimbria ovarica) 30. Ovary 31. Visceral pelvic peritoneum: 23. perimetrium, 32. broad ligament (with 33. mesosalpinx, 34. mesovarium, and 35. mesometrium) Ligaments: 36. round, 37. ovarian, 38. suspensory of ovary Blood vessels: 39. ovarian artery and vein, 40. uterine artery and veins, 41. vaginal artery and veins Other: 42. ureter, 43. pelvic floor (levator ani), 44. femoral head, 45. hip bone, 46. internal iliac vessels (anterior branches), 47. external iliac vessels, 48. abdominal cavity
Image showing the right Fallopian tube (here labeled the uterine tube) seen from behind. The uterus, ovaries and right broad ligament are labeled.
Isthmus of the Fallopian tube seen arising from the uterus in a cadaveric specimen

The Fallopian tubes, also known as uterine tubes, salpinges (singular salpinx), or oviducts, are tubes that stretch from the ovaries to the uterus, in the human female reproductive system.

Female reproductive system

[[Image:Scheme female reproductive system-number-full-cropped.svg|thumb|300px|

A pictorial illustration of the female reproductive system.
Sagittal MRI showing the location of the vagina, cervix, and uterus
Illustration depicting female reproductive system (sagittal view)
Frontal view as scheme of reproductive organs

30. Ovary

Ovarian follicle

Histology section of a mature ovarian follicle. The oocyte is the large, round, pink-staining cell at top center of the image.
Section of vesicular ovarian follicle of cat. X 50.
Primordial ovarian follicle. The oocyte is surrounded by a single layer of flat granulosa cells.
A histological slide of a human primary ovarian follicle in greater magnification.

An ovarian follicle is a roughly spheroid cellular aggregation set found in the ovaries.


The ureters are tubes made of smooth muscle that propel urine from the kidneys to the urinary bladder.

The ureters are tubes that carry urine and connect the kidneys to the bladder.
Structures that are near the ureters. 1. Human urinary system: 2. Kidney, 3. Renal pelvis, 4. Ureter, 5. Urinary bladder, 6. Urethra. (Left side with frontal section), 7. Adrenal gland
8. Renal artery and vein, 9. Inferior vena cava, 10. Abdominal aorta, 11. Common iliac artery and vein
With transparency:
12. Liver, 13. Large intestine, 14. Pelvis
Microscopic cross-section of the ureter, showing the epithelium (purple cells) sitting next to the lumen. A large amount of muscle fibres can be seen surrounding the epithelium, and the adventitia sits beyond this
Image showing the bottom part of an embryo 4 - 5 weeks old. Here, the ureter (in orange) can be seen emerging from the bottom of the mesonephric duct (labelled "Wolffian duct"), connected to the primitive bladder. Image from Gray's Anatomy 1918 edition.
A giant ureteral stone with dimensions of approximately 6 × 5 × 4 cm and weighing 61 grams extracted from the left ureter of a 19-year old male
Ultrasound showing a jet of urine entering the bladder (large black section) through the ureter.

In females, the ureters pass behind the ovaries and then travel in the lower midline section of the broad ligament of the uterus.


Process of physical changes through which a child's body matures into an adult body capable of sexual reproduction.

Approximate outline of development periods from childhood to early adulthood. Puberty is marked in green at right.
Five Tanner stages of male genitalia. The Adolescent Period
Development of a boy from childhood to the end of puberty.
Boy at 11.3yo (prepuberal), 12.5yo, 14.9yo and 16.3yo (post puberal).
Facial hair of a male.
Tanner stages of puberty in females
Development of a girl from childhood to the end of puberty
Variations of the initial and final height of three boys from 12-years-old to the end of their growth spurt.
Two boys from 11.5 to 16.6 years old
Two girls from 8.0 to 14.5 years old
Temporary gynecomastia of a boy going through puberty.

It is initiated by hormonal signals from the brain to the gonads: the ovaries in a girl, the testes in a boy.


Following a surge of luteinizing hormone (LH), an oocyte (immature egg cell) will be released into the uterine tube, where it will then be available to be fertilized by a male's sperm within 12 hours. Ovulation marks the end of the follicular phase of the ovarian cycle and the start of the luteal phase.
Ovulation occurs about midway through the menstrual cycle, after the follicular phase, and is followed by the luteal phase. Note that ovulation is characterized by a sharp spike in levels of luteinizing hormone (LH) and follicle-stimulating hormone (FSH), resulting from the peak of estrogen levels during the follicular phase.
This diagram shows the hormonal changes around the time of ovulation, as well as the inter-cycle and inter-female variabilities in its timing.
Chance of fertilization by day relative to ovulation

Ovulation is the release of eggs from the ovaries.

Menstrual cycle

Menstrual cycle
Progression of the menstrual cycle and some of the hormones contributing to it
An ovary about to release an egg
The anatomy of the uterus
During the menstrual cycle, levels of estradiol (an estrogen) vary by 200 percent. Levels of progesterone vary by over 1200 percent.
A human primary ovarian follicle viewed by microscopy. The round oocyte stained red in the center is surrounded by a layer of granulosa cells, which are enveloped by the basement membrane and theca cells. The magnification is around 1000 times. (H&E stain)

The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that make pregnancy possible.


Any natural or synthetic steroid hormone that regulates the development and maintenance of male characteristics in vertebrates by binding to androgen receptors.

Steroidogenesis, showing the relation between several androgens, is at bottom left. Estrone and estradiol, in contrast, are estrogens.

Androgens are synthesized in the testes, the ovaries, and the adrenal glands.