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21 Cards in this Set
- Front
- Back
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What is a hormone |
Chemicals that help control the body funtions |
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What do hormones control |
Things like periods in women as well as the changes that occur in our bodies during puberty and homeostasis |
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Where do hormons have an effect |
On target organs |
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State 3 places in the body where hormones are produced |
Brain, testes, 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 secree substances e.g hormones |
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water content |
water leaves the body by when we breathe, sweat, and when we go to the toilet |
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ion content |
Ions are lost by skin when we sweat, kidneys in the urine |
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Temerature |
To maintain the temperature at which enzymes work best for chemical reactions in the cells. Normal body temperature is 37 degrees |
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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 excersize, stay in the shade, dont lie on the hot ground, dont eat, dont talk |
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What is the menstrual 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 menstrual cycle is the egg released |
14th |
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What is the role of follicle stimulating hormone (FSH) where is it produced |
Causes eff to mature stimulates ovary to produce estrogen produced in the pituitary gland |
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What is the role of luteinising hormone (LH) where is it produced |
triggers release of egg from the ovary produced 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 develop and stimulates pituitary gland to make LH produced in the ovaries |
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If an egg is not fertilised what happens |
The lining of our 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 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 happens during invitro fertilisation (IVF) |
eggs collected in the lab and fertilised in the lab then implanted |
