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16 Cards in this Set
- Front
- Back
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What is a hormone? |
Chemicals that help tocontrol body function |
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what do hormones control? |
things like menstruation in women as well as th changes thatoccurto ur bodies during puberty and homeostasis. |
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where do hormones have aan effect? |
on taget organs |
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state 3 places in the body where horomones are produced |
brain, testis,panceras, adranal gands, ovary and theyriods gland |
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how do hormones travel around the body? |
In the blood |
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What is a gland? |
Part of tissues or organsin the body that secrete substancese.g. hormones
Factor controlled by homeostasis:Description
Water content: Water leaves the body by: lungs when we breathe out, skin when we sweat; kidneys in the urine Ion content: Ions are lost by; skin when we sweat; kidneys in the urine Temperature: To maintain the temperature at which enzymes work best fo chemical rections in the cells. Normal body temp is 37 degrees Bood glucose levels:Controlled by the pancreas t provide the cells with a constant supply of energy |
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describle how a person conserve water in a surivual. |
-avoid exercise, stay in the shade, don't lie on hot ground, don't eat,don't talk and breathe through your mouth. |
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what is menstrual cycle? |
the reproducative cycle in women controlled by hormones |
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how long does the menstrual cycle last? |
28 days |
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at which day in the month of the menstrual cycle is the egg released? |
14th day |
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what is the role of follicle stimulating hormone (FSH)? where is it produced? |
triggers releases of egg from the ovary in the pituitary gland. |
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what is the role of oestrogen ? where is it produced ? |
stimulates the lining of the womb to devlop and stimulates piuitary gland to make LH produed in the ovaries |
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if an egg is not fertilised what happens ? |
the lining of the womb breaks down and the egg leaves the body in a period. |
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how do contrecepatives use hormones to control fertility ? |
inhabiltes production of FSH so eggs don't 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 oestogen production. |
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what happens during in vito fertilisatin (IVF)? |
eggs colected and ferillied in the lab then implanted. |
