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Animal Reproductive Systems
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Prostate Gland
The prostate gland secretes fluid that nourishes and protects sperm during ejaculation.
Cervix
The cervix is the lower part of the uterus that opens into the vagina and dilates during childbirth.
Bulbourethral Glands
Bulbourethral glands produce a fluid that lubricates the urethra and neutralizes the acidity of residual urine.
Endometrium
The endometrium is the inner lining of the uterus that thickens during the menstrual cycle and sheds during menstruation if no pregnancy occurs.
Foreskin
The foreskin is a layer of skin covering the glans of the penis, which can be removed by circumcision.
Acrosome
The acrosome is a cap-like structure on the head of a sperm cell that contains enzymes to help sperm penetrate an egg.
Seminal Vesicles
Seminal vesicles produce and secrete fluids rich in sugars that provide energy for the sperm and form a major component of semen.
Placenta
The placenta is an organ that develops in the uterus during pregnancy and permits the exchange of nutrients, waste, and gases between mother and fetus.
Vas deferens
The vas deferens transports mature sperm from the epididymis to the urethra in anticipation of ejaculation.
Scrotum
The scrotum is a pouch of skin containing the testicles and regulates their temperature for optimal sperm production.
Ejaculatory Ducts
The ejaculatory ducts are tubes through which sperm from the vas deferens and fluid from the seminal vesicles pass before reaching the urethra.
Fimbriae
The fimbriae are finger-like projections at the end of the fallopian tubes that help guide the ovum into the tube after ovulation.
Vagina
The vagina is a muscular canal leading from the cervix to the outside of the female body and facilitates intercourse and childbirth.
Graafian Follicle
The Graafian follicle is the mature ovarian follicle that releases the egg during ovulation.
Clitoris
The clitoris is an organ in females that is rich in nerve endings and contributes to sexual arousal and pleasure.
Uterus
The uterus is where the development of the fertilized egg into a fetus takes place.
Epididymis
The epididymis stores sperm cells produced by the testes and allows them to mature.
Sertoli Cells
Sertoli cells provide nourishment and support for developing sperm cells within the seminiferous tubules of the testes.
Corpus luteum
The corpus luteum forms from an ovarian follicle after ovulation and secretes hormones necessary for maintaining pregnancy.
Bartholin's Glands
Bartholin's glands secrete fluid that lubricates the vaginal opening during sexual arousal in females.
Fallopian Tubes
Fallopian tubes connect the ovaries to the uterus and are the path the egg travels; fertilization typically occurs here.
Semen
Semen is the fluid that contains sperm and is expelled during ejaculation.
Leydig Cells
Leydig cells, located in the testes, produce testosterone, which is critical for male secondary sexual characteristics and spermatogenesis.
Testis
In males, testes produce sperm and hormones like testosterone, essential for reproduction.
Ovary
In females, ovaries produce eggs (ova) and hormones such as estrogen and progesterone.
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