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Grade 7 Endocrine
Grade 7 Endocrine and Reproductive Systems
| Question | Answer |
|---|---|
| stress | the reaction of your body and mind to threatening, challenging, or disturbing events |
| homeostatsis | the process by which an organism's internal environment is kept stable in spite of changes in the external environment |
| adreneline | a hormone that gives you a burst of energy and causes many other changes in your body, preparing you for taking quick action |
| endocrine system | controls many of the body's daily activities as well as long-term changes such as development |
| glands | organs that produce chemicals |
| hormones | the chemical product of the endocrine system; turn on, turn off, speed up, or slow down the activities of different organs and tissues |
| target cells | specific cells that fit together with a hormone |
| hypothalamus | a tiny part of the brain near the middle of your head that links the nervous and endocrine systems |
| pituitary gland | communicates with the hypothalamus to control many body activities; regulates growth |
| negative feedback | a system that is turned off by the condition it produces |
| egg | female sex cell |
| sperm | male sex cell |
| fertilization | the joining of the egg and sperm cell |
| reproduction | the process by which living things produce new individuals of the same type |
| zygote | a fertilized egg |
| chromosomes | carry the information that controls inherited characteristics |
| testes | the organs of the male reproductive system in which sperm are produced |
| testosterone | a hormone that controls the development of physical characteristics in men |
| scrotum | the external pouch of skin that cover the testes |
| semen | a mix of sperm and fluids |
| penis | the organ through which semen leaves a man's body |
| ovary | organ that produces egg cells |
| estrogen | hormone that controls the development of physical characteristics in females |
| oviduct | place where fertilization takes place |
| Fallopian tubes | another name for oviduct |
| womb | another name for uterus |
| uterus | place where the baby grows and develops |
| menstrual cycle | the monthly cycle of changes that occurs in the female reproductive system |
| vagina | birth canal; muscular passageway leading to the outside of the woman's body |
| ovulation | the part of the menstrual cycle when an egg is released from the ovary |
| menstruation | the cycle of ovulation (releasing an egg) and the shedding of the thickened lining of the uterus when there is no fertilized egg |
| fetus | the name for the developing human after nine weeks |
| embryo | the name for the developing human until about 8 weeks |
| amniotic sac | the membrane that surrounds the embryo and develops into a fluid-filled sac to protect the fetus |
| placenta | becomes the link between the developing embryo and the mother |
| umbilical cord | a ropelike structure that forms between the embryo and the placenta; contains blood vessels that link the embryo and the mother but maintains separate circulatory systems |
| identical twins | 2 individuals that develop from one fertilized egg |
| fraternal twins | 2 individuals that develop from two eggs that are released at the same time and fertilized by 2 different sperm |
| adolescence | the stage of development when children become adults physically and mentally and socially |
| puberty | the period of development in which the body becomes able to reproduce |
Created by:
Dcoleman
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