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Endocrine and Reprod

Gr 7 Endocrine and Reproduction Systems

TermDefinition
homeostasis the body's tendency to maintain an internal balance
stress the reaction of your body and mind to threatening, challenging, or disturbing events
adrenaline a chemical that gives you a burst of energy and prepares you to take quick action
endocrine system controls many of the body's daily activities as well as long-term changes such as development
endocrine glands produce and release chemical products directly into the bloodstream
hormone the chemical product of an endocrine gland
target cells cells that recognize a specific hormone's structure
hypothalamus the link between the nervous and endocrine systems
pituitary gland communicates with the hypothalamus to control many body activities
negative feedback a signal in a system that is turned off by the condition it produces
sperm male sex cell
egg female sex cell
fertilization the joining of the egg and sperm
reproduction the process by which living things produce new individuals of the same type
zygote a fertilized egg
chromosomes structures that carry the information that controls inherited characteristics, like hair color and blood type
testes organs in which sperm are produced
testosterone the hormone that controls the development of physical characteristics in men
scrotum the external pouch of skin that keeps the ideal temperature for sperm development
semen the mix of sperm and fluids
penis the organ in which the semen leaves the body
ovary organ that produces the eggs
estrogen the hormone that controls the development of physical characteristics in women
oviduct passageway for eggs; where fertilization takes place
Fallopian tubes another name for oviduct
uterus place where the fertilized egg grows; womb
vagina the birth canal
menstrual cycle the monthly cycle of changes that occurs in the female reproductive system
ovulation the process of releasing a mature egg into the oviduct
menstruation the process of shedding the lining of the uterus if the egg is not fertilized
embryo name given to a zygote until eight weeks
fetus name given to a baby after eight weeks
amniotic sac a membrane that surrounds the embryo and develops into a fluid-filled sac
placenta the link between the developing embryo and the mother
umbilical cord a ropelike structure that forms between the embryo and the placenta
labor stage of birth in which strong, muscular contractions begin
delivery stage of birth when the baby is completely pushed out of the mother's body
afterbirth stage of birth when contractions push the placenta out of the mother's body
adolescence stage of development when children become adults physically and mentally
puberty the period of sexual development in which the body becomes able to reproduce
Created by: Dcoleman
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