Chapter 39

substance produced in one part of an organism that affects another part of the same organism

Cell that has a receptor for a particular hormone

Gland that releases it secreations through tubelike structures called ducts.

Gland fthat releases its secreations directly into the blood stream

Hormone like modified fatty acid produced by a wide range of cells; generally affects only nearby cells and tissues

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

condition that occurs when the pancreas produces too little insulin, resulting in an increase the level of blood glucose

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

male reproductive organ that produces sperm

period of rapid growth and several maturation during which the reproductive system becomes fully functional

External sac containing the testis

one of hundreds of tiny tubles in the testis in which sperm are produced

Structure in the male reproductive system in which sperm fully mature and are stored

tube that carries sperm from the epididymis to the urethra

tube that carries urine from the bladder and releases it from the body; in males, tube through which semen is released from the body

External male reproductive organ

Cluster of cells surrounding in a single egg in the human reproductive system

Process in which an egg is released from the ovary

one of two fluid filled tubes in human females through which an egg passes after its release from an ovary

Organ of the female reproductive system in which a fertilized egg can develop

in the human female reproductive system a canal that leads from the uterus to the outside of the body

Cycle during which an egg develops and is released from an ovary and the uterus is prepared to recieve a fertilized egg

name given to follicle after ovulation becauseof its yellow color

Phase of the menstral cycle during which the lining of the uterus, along with blood and the unfertilized egg is discharged through the vagina

Disease spread from one person to another during sexual contact.

Fertilized egg

Process in which a blastocyst attaches itself to the wall of the uterus

Process of cell migration by which a third layer of cells is formed within the cavity of a blastocyst

Development of the nervous system

Organ in placental mammals through which nutrients oxygen, carbon dioxide wastes exchanged between embroyo and mother

Name given to a human embroyo after eight weeks of development