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Science
7th grade chapter 8
| Question | Answer |
|---|---|
| What is the endocrine system | Controls many of the body's daily activities as well as long-term changes such as development |
| Endocrine glands | An organ of the endocrine system which produces and releases it's chemical products directly into the bloodstream |
| Hormones | The chemical product of an endocrine gland that speeds up or slows down the activities of an organ or tissue |
| Target cells | A cell in the body that recognizes a hormones chemical structure a cell to which a hormone binds chemically |
| Hypothalamus | A tiny part of the brain that links the nervous system and the endocrine system |
| Pituitary gland | An endocrine gland just below the hypothalamus that. Communicates with the hypothalamus to control many body activities |
| Negative feedback | A process in which a system is turned off by the condition it produces examples includes regulation of temp by a thermostat and the regulation of the levels of many hormones in the blood |
| Egg | A female sex cell |
| Sperm | A male sex cell |
| Fertilization | The joining of a sperm and an egg |
| Reproduction | The process by which living things produce new individuals of the same type |
| Zygote | A fertilized egg produced by the joining of a sperm and an egg |
| Chromosome | Rod-shaped structures in cells that carry the info. that controls inherited characteristics such as eye color and blood type |
| Testosterone | A hormone produced by testes that controls the development of physical characteristics in men |
| Scrotum | An external pouch of skin in which the testes are located |
| Semen | A mixture of sperm cells and fluids |
| Penis | The organ through which both the semen and urine leave the male body |
| Ovaries | Organs of the female reproductive system in which eggs and estrogen are produced |
| Estrogen | A hormone produced by the ovaries that controls the development of adult female characteristics |
| Oviduct | A passageway for eggs from an ovary to the uterus the place where fertilization usually occurs |
| Uterus | The hollow muscular organ of the female reproductive system in which a baby develops |
| Vagina | A muscular passageway through which a baby leaves the mothers body |
| Menstrual cycle | The monthly 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 an oviduct occurs about halfway through a typical menstrual cycle |
| Menstruation | The process that occurs if fertilization does not take place, 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 occurred |
| Amniotic sac | A fluid-filled sac that cushions and protects a developing 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 in the uterus between the embryo and the placenta |
| Fetus | A developing human from the ninth week of development until birth |
| Adolescence | The stage of development between childhood and adulthood when children become adults physically and mentally |
| Puberty | The period of sexual development during the teenage years in which the body becomes able to reproduce |
Created by:
2601ana
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