Wednesday, March 5, 2008

** Reproductive definitions **

Reproductive System Vocabulary


1.Corpus luteum- A small yellow structure developing within the ruptured ovarian follicle after the egg has been released.

2.Epididymis- is a coiled tube attached to the back of each testis where sperm matures.

3.Gonad- Is an organ that produces gametes like ova and sperm.

4.Meiosis- cell division by which eggs and sperm are produced.

5.Oocyte- Unfertilized egg cell.

6.Ovary- Is a female gonad which manufactures estrogens and eggs.

7.Placenta- A structure attached to the wall of the uterus to nourish the fetus during a pregnancy.

8.Scrotum- The sac of skin that surrounds the testicles.

9.Seminiferous tubule- is any of the numerous long convoluted tubules in the testis which are the sites where spermatozoa mature.

10.Testis- a male’s testes are located in a pouch that hangs suspended outside the lower body. The testes produce testosterone and sperm.

11.Vulva- The external female genital organs, including the clitoris, vaginal lips, and the opening of the female’s vagina.

12.Blastocyst- The preimplantation embryo of mammals consisting of a sphere of cells with an outer cell layer that forms the placenta and a cluster of cells on the interior called the inner cell mass that forms the embryo.

13.Embryo- In humans, the developing of individual form from time of implantation to approximately the end of the second month after conception.

14.Fetus- In humans, the fetal stage is the form of a fetus of about the end of the third month until birth. The large stage before birth in other words.

15.Implantation- The embedding of the fertilized egg in the endometrium of the uterus.

16.Lactation- The secretion or formation of milk by the mammary glands.

17.Umbilical cord- Is the cord that connects the fetus to the maternal placenta, providing nutrients and removing wastes.

18.Yolk sac- Is the place where the embryo develops.

19.Zygote- A cell formed by the union of two gametes.

20.Ultrasound- Is a procedure in which high-energy sound waves are bounced off internal tissues or organs and it makes echoes.