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LCE SCIENCE

Human Biology & Health Ch 7 Section 1 - 3

TermDefinition
endocrine gland a structure of the endocrine system which produces and releases its chemical products directly to into the bloodstream
hormone the chemical product of an endocrine gland
target cell a cell in the body that recognizes a hormone's chemical reaction
hypothalamus a part of the brain that links the nervous system and the endocrine system
pituitary gland an endocrine gland that controls the many body activities
negative feedback a process in which a system is turned off by the condition it produces
egg a female sex cell
sperm a male sex cell
fertilization the joining of a sperm cell and an egg cell
zygote a fertilized egg, produced by the joining of a sperm and an egg
testis organ of the male reproductive system in which sperm and the testosterone are produced
testosterone a hormone produced by the testes that controls the development of of physical characteristics in mature men
scrotum an external pouch of skin in which the testes are located
semen a mixture of sperm and fluids
penis the organ through which both semen and urine leave the male body
ovary organ of the female reproductive system in which eggs and estrogen are produced
estrogen a hormone produced by the ovaries that controls the development of eggs and adult female characteristics
fallopian tube a passageway for eggs from an ovary to the uterus
uterus the hollow muscular organ of the female reproductive system in which a fertilized egg develops
vagina a muscular passageway leading to the outside of the body; also called the birth canal
menstrual cycle the cycle of changes that occurs in the female reproductive system during which an egg develops and the uterus prepares for the arrival of a fertilized egg.
ovulation the process in which a mature egg is released from the ovary into a fallopian tube
menstruation the process in which the thickened lining of the uterus breaks down and blood and tissue then pass out of the female body through the vagina
embryo a developing human during the first eight weeks after fertilization has occured
fetus a developing human from the ninth week of development until birth
amniotic sac a fluid filled sac that cushions and protects a developing embryo and fetus in the uterus
placenta a membrane that becomes the link between the developing embryo or fetus and the mother
umbilical cord a rope like structure that forms between the embryo or fetus and the placenta
adolescence the stage of development between childhood and adulthood when children become adult physically and mentally
puberty the period of sexual development in which the body becomes able to reproduce
Created by: mrsschaaf
 

 



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