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17 Cards in this Set
- Front
- Back
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what is a hormone |
chemicals that help control body functions. |
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what do hormones control |
menstruation in women puberty homeostasis |
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where do hormones have an effects |
on traget organs |
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state 3 places in the body where hormones travel around the body |
in the blood |
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what is a gland |
parts of tissues and organs in the body that secrets substances e.g. hormones |
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table |
factor controlled by homeostsis description water content:water leaves the body by- lungs when we breathe. skin: when we sweat. kidneys: in the urine ion content: ions are lost by: sweat and urine in the kidneys temperature: to maintain the temperature at which enzymes work best for chemical reactions in the cells. normal body temperature is 37 degrees. blood glucose levels: controlled by the pancreas to provide the cells with a constant supply of energy.
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describe how a person conserve water in a survival situation |
avoid exercise, stay in the shade, dont lie hot ground, dont eat, dont talk or breath through your mouth. |
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what isthe menstrual cycle |
the reproductive cycle in women controlled by hormones. |
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how long does the menstrual cycle last |
28 days |
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at what day in the month of the menstrual cycle is the egg released |
14th |
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what is the role of follicle stimulating hormone(FSH)? where is it produced |
FSH cause the egg to mature stimulates the ovaries to produce oestrogen produced in the pitultary gland. |
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what is the role of leteinising hormone(LH) where is it produced |
triggers release of egg from the ovary produced in the pitultary gland |
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what is the role of oestrogen? where is it produced |
stimulates the lining of the womb to develope and stimulates pituitary gland to make LH which is produced in the ovaries. |
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if an egg is not fertallised what happens |
the linig of the womb breaks down and the egg leaves the body in a period |
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how do contraceptives use hormones to control fertility |
inhibits 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 oestrogen production. |
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what hapens during in vitro fertilisation(IVF) |
eggs collected and fertilised in the lab then implanted. |
