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16 Cards in this Set
- Front
- Back
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What are hormones?
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Chemicals that can speed up or slow downcellular processes.
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Pineal gland
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In brain. produces melatonin(regulates sleep patterns)
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**Pituitary gland
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Attactched to hypothalamus of brain. affects many body function
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Thymus
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Hormones here stimulate production of infection-fighting cells.
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Thyroid Gland
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Below larynx. Hormones here regulate metabolic rate, control uptake of calcium by bones, + promote normal nervous system development.
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Parathyroid glands
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help regulate calcium levels
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Adrenal glands
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on top of kidneys. help stabalize blood sugar levels. + help body adapt to stress.
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Ovaries
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Produce female sex cells.
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Testes
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Produce male sex cells. Prodeuce testosterone(helps with prduction of sperm)
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Negative-Feedback System
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1. A meal is eaten.
2. Intestines take in glucose during digestion. 3. Glucose level in bloodstream decreases. 4. Pancreas responds to high glucose level by producing insulin.(hormone) 5. Insulinreleased into bloodstream, causing liver and other tissues to take up more glucose. 6. Blood glucose level decreases to normal level in bloodstream. Homeostasis restored. |
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Sperm
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Head, tail and nucleus.
Head- contains DNA Tail- moves sperm Produced in greater #'s at lower temperatures. |
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Semen
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Mixture of sperm and fluid
Leaves through urethra |
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Ovulation
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Once a month, an egg is released.
Enters oviduct. Sweeped into uterus. |
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Uterus
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Hollow, pear-shaped muscular organ w/ thick walls
Lower end-cervix. |
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Menstrual Cycle
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Phase 1: Blood and tissue cells flow out(menstrual flow). 4-6 days.
Phase 2: Uterus lining increases. Ovulation occurs. Phase 3: Uterus continues to increase. uterus lining breaks down and menstruation begins |
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Menopause
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45-60 years of age.
ovulation+ menstrual peropds end. Eggs gone or almost gone. |
