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27 Cards in this Set
- Front
- Back
Function of Hormones (5) |
-Control several major processes |
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Tropic hormones(Function) |
Target other endocrine glands and stimulate their growth and secretion |
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Sex hormones(Function) |
Target reproductive tissue |
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Anabolic hormones(Function) |
Stimulate anabolism in the body |
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Hormones are produced by: |
Specialized cells which secrete hormones into extracellular fluid |
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How are hormones transfered? |
Bloodstream |
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How are hormone levels controlled? |
Negative feedback |
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Define: Endocrine |
System that consists of glands that secrete hormones into the blood stream |
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Define: Exocrine |
Secratory structure that discharges products into ducts |
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Describe negative feedback. |
A mechanism used to maintain homeostasis in 4 steps |
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Step 1 (In Negative Feedback) |
A stimulus or charge occurs in the body |
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Step 2 (In Negative Feedback) |
The sensor or receptor (sensory neuron) detects change in the body |
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Step 3 (In Negative Feedback) |
The control center (brain) sends out signals and messages to the effector |
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Step 4 (Negative Feedback) |
The effector (muscle or glands) is in charge of restoring the body back to homeostasis |
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Pineal gland |
Secretes melatonin. |
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Hypothalamus |
-Controls processes associated with thirst, hunger, fatigue, cardiac rhythm. |
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Pituitary Gland |
-Master Gland |
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Posterior Pituitary Hormones |
Oxytocin |
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Oxytocin |
-Stimulates contractions of uterus |
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Antidiuretic hormone (ADH) |
-Can inhibit production by promoting water retention by kidneys |
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Anterior Pituitary Hormones |
-Thyroid stimulating hormone (TSH)- promotes and maintains the growth and development of the thyroid gland |
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Stimulus low blood level of the thyroid hormone |
Hypothalamus increases thyrotropin releasing hormone which will travel the the anterior pituitary gland which will release TSH which goes to the thyroid gland and stimulates the release of thyroxine which results in an increased thyroxine level in the blood stream. |
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Adrenal Glands |
Located above the kidneys (Cortex and medulla) releases hormones that prolongs and enhances the autonomic nervous system. |
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Ovaries |
Located in pelvis and produce hormones that promote female characteristics and pregnancy |
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Pancreas |
Located in the beginning of the small intestine and increases glucose levels |
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Testes |
Paired organs in scrotum. |
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Thyroid |
Located in the neck, 2 large lobes. |