substance produced in one part of an organism that affects another part of the same organism
Hormone
Cell that has a receptor for a particular hormone
Target Cell
Gland that releases it secreations through tubelike structures called ducts.
Exocrine Glands
Gland fthat releases its secreations directly into the blood stream
Endocrine Gland
Hormone like modified fatty acid produced by a wide range of cells; generally affects only nearby cells and tissues
Prostaglandin
Gland in the base of the skull that secrets nine hormones that directly regulate many body functions and control the actions of several other endocrine glands
Pituitary Glands
condition that occurs when the pancreas produces too little insulin, resulting in an increase the level of blood glucose
Diabetes Mellitus
in plants, a flower structure that contains one or more ovules from which female gametophytes are produced; in animals, the female gonads that produces eggs
Ovary
male reproductive organ that produces sperm
Testis
period of rapid growth and several maturation during which the reproductive system becomes fully functional
Puberty
External sac containing the testis
Scrotum
one of hundreds of tiny tubles in the testis in which sperm are produced
Seminiferous Tubule
Structure in the male reproductive system in which sperm fully mature and are stored
Epididymis
tube that carries sperm from the epididymis to the urethra
Vas Deferenes
tube that carries urine from the bladder and releases it from the body; in males, tube through which semen is released from the body
Urethra
External male reproductive organ
Penis
Cluster of cells surrounding in a single egg in the human reproductive system
Follicle
Process in which an egg is released from the ovary
Ovulation
one of two fluid filled tubes in human females through which an egg passes after its release from an ovary
Fallopian Tube
Organ of the female reproductive system in which a fertilized egg can develop
Uterus
in the human female reproductive system a canal that leads from the uterus to the outside of the body
Vagina
Cycle during which an egg develops and is released from an ovary and the uterus is prepared to recieve a fertilized egg
Menstrual Cycle
name given to follicle after ovulation becauseof its yellow color
Corpus Luteum
Phase of the menstral cycle during which the lining of the uterus, along with blood and the unfertilized egg is discharged through the vagina
Menstruation
Disease spread from one person to another during sexual contact.
Sexually Transmitted Disease
Fertilized egg
Zygote
Process in which a blastocyst attaches itself to the wall of the uterus
Implantation
Process of cell migration by which a third layer of cells is formed within the cavity of a blastocyst
Gastrulation
Development of the nervous system
Neurulation
Organ in placental mammals through which nutrients oxygen, carbon dioxide wastes exchanged between embroyo and mother
Placenta
Name given to a human embroyo after eight weeks of development