Glossary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Pituitary Gland
A small gland located just behind the eyes at the bottom of the brain. It is the "master" endocrine gland and is involved in the control of all of the endocrine organs. Secreted hormones particularly important in reproduction include follicle stimulating hormone (FSH), luteinizing hormone (LH), and prolactin.
Polycystic Ovarian Syndrome
Development of multiple cysts in the ovaries due to arrested follicular growth, anovulation.
Polyspermia
Fertilization of the egg by more than one sperm.
Post Coital Test
An examination of a woman’s cervical mucus after she has had intercourse to determine the number and motility (ability to move) of sperm in the mucus.
Progesterone
An ovarian hormone secreted by the corpus luteum during the second half of the menstrual cycle after ovulation has occurred; also produced by the placenta during pregnancy.
Progestin
A synthetic hormone that has an action similar to progesterone.
Prolactin
A pituitary hormone that stimulates the breast and is involved in milk production.
Prolactinoma
A pituitary tumor which causes excessive secretion of prolactin and which can cause problems with ovulation.
Pronucleus
The haploid nucleus of a sperm or egg before fusion of the nuclei in fertilization.