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17 Cards in this Set
- Front
- Back
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What is a hormone? |
Chemicals that help to control body function |
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What do hormones control? |
Things like menstruatopn 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 three places in the body where hormones are produced |
Brain, testis, pancreas, adrenal gland, ovary and thyroid gland |
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How do 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 secrete substances e.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 for chemical reactions in the cels. Normal body temp 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 can conserve water in a survival situation |
Avoid excercise, stay in the shade, don't lie on hot ground, don't don't eat, don't talk and breathe through your mouth |
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What is the mentrual cycle? |
The reproductive cycle in women controlled by hormones |
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How long does the mentrual cycle last? |
28 days |
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At what day in the month of the mentrual cycle is the egg released? |
14th |
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gWhat is the role of folicle stimulating hormone (FSH)? Where is it produced? |
Causes the egg to mature stimulates overy produce oestrogen. Produced in the pituatary gland. |
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What is the role of lutenising hormone (LH)? Where is it produced? |
Triggers release of egg from the overy produced in the pituatray gland. |
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What is the role of oestrogen? Where is it produced? |
Stimulates the lining of the womb to develop and stimulates pituatary gland to make LH produced 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 contraceptives use hormones to control fertility? |
Inhabits 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 happens during in vitro fertilisation (IVF)? |
Eggs collected and fertilised in the lab then implanted. |
