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endocrine system
exam study guide vocab & facts
20
Science
6th Grade
06/04/2007

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Term
hormone
Definition
chemical product of the endocrine gland
Term
ovulation
Definition
the process in which a mature is released from the ovary into the fallopian tube
Term
ovaries
Definition
organs of the female reproductive system (2) in which eggs and estrogen are produced
Term
testosterone
Definition
a hormone produced by the testes that controls the development of physical characteristics in mature men
Term
target cells
Definition
a cell in the body that recognizes a hormone's chemical structure
Term
zygote
Definition
a fertilized egg produced by the joining of a sperm and an egg
Term
estrogen
Definition
a hormone produced by the ovaries that controls the development of eggs and adult female characteristics
Term
fertilization
Definition
the joining of a sperm and an egg
Term
testes
Definition
organs of the male reproductive system in which sperm and testosterone are produced
Term
puberty
Definition
the period of sexual reproduction in which the body becomes ready to reproduce
Term
functions of the endocrine system
Definition
1. produces chemicals that control many of the body's daily activities---2. regulates long term changes such as growth and development
Term
how negative feedback works
Definition
when the amount of a particular hormone in the blood reaches a certain level, the endocrine system sends signals that stop the release of that hormone
Term
menstrual cycle
Definition
days 1-4: menstrual discharge________days 5-13: developing egg________days 14-15: ovulation occurs________days 16-22: egg moves through oviduct. uterus lining becomes thicker________days 23-28: unfertilized egg enters uterus
Term
what sexual reproduction involves
Definition
sexual reproduction involves the production of eggs by the female and sperm by the male. the egg and sperm join together during fertilization
Term
make-up of the female reproductive system
Definition
picture:
Term
make up the male reproductive system
Definition
picture:
Term
how an embryo and fetus are protected
Definition
they are protected by the membranes and other structures that form during development
Term
3 stages of birth
Definition
labor, delivery, & afterbirth
Term
difference b/w identical and fraternal twins
Definition
I: 1 sperm fertilizes 1 egg; egg splits into 2 identicle embryos________ F: 2 different sperm fertilize 2 eggs; each egg develops into an embryo
Term
4 stages of life
Definition
Infancy, Childhood, Adolescence, Adulthood
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