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18 Cards in this Set
- Front
- Back
what is a chemical hormone |
chemicals that help control body functions |
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what do hormones control |
things like menstration in women as well as the changes that occur to our bodies during puberty and homeostasis |
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where do hormones have an effect |
on target organs |
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state 3 places in the body where horones are produced |
brain, testis, pancreas, adrenal gland, ovary and thyroid gland |
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how do hormones travel around the body |
through the blood stream |
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what is a gland |
parts of tissues and organs in the body that secrete substances e.g. hormones. |
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table for 6 |
water current- water leaves the body by: lungs whe we breath out, skin when we sweat, kidneys in the urine. ion current- ions are lost by skin when we sweat, kidneys in the urin temperature- to maintain the temperature at which enzymes work best for chemical reactions in the cells. normal bdy temperature is 37 degrees celcius blood glucose levels- controlled by the pancreas to provide the cells with a constent supply of energy. |
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describe how a person can conserve water in a survival situation |
avoid exercise, stay in the shad, dont lie on hot ground, dont eat, dont talk and breath through your mouth |
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what is the menstral cycle |
the reproductive cycle in women controlled by hormones |
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how long does the menstral cycle last |
28 days |
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at what day in the month of the menstral cycle in the egg released |
14th day |
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what is the role of follicle stimulating hormone (FSH) where is it produced |
causes the egg to mature, stimulates ovary to produce oestrogen prodcued in the pituitry gland |
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what is the role of luteinsing LH, where it produces |
triggers release of egg from the ovary produced in the pituitry gland |
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what is the role of oestrogen, where is it produced |
stimultes the lining of the womb to develop and stimulates pituitary gland to make LH produced in the overies. |
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if a eg is not fertilised what happens |
the lining of the womb breaks down, and the egg leaves the body in the period. |
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how do contraceptives use hormones to control fertility. |
inhibits production of FSHs egs dont mature in the ovaries |
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which hormones will be included in "fertility drugs" |
FSh used to stimulate eggs to mature and trigger oestrogen production |
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what hapens during in vitro fertilisation IVF |
eggs collected and fertilised in the lab the implanted. |