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Endocrine System

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Maddie Maher

on 10 March 2013

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Transcript of Endocrine System

(Excluding the Hypothalamus and Pituitary Glands) The Endocrine System What is the Endocrine System? System of Communication and Regulation

Thyroid Gland
Parathyroid Glands
Pineal Gland
Adrenal Glands Thyroid Gland Location: on the trachea
Hormones Produced:
Triiodothyronine (T3)
Thyroxine (T4)
Regulated By: Thyroid Stimulating
Hormone and calcium levels Parathyroid Glands Pineal Gland Parathyroid Glands Adrenal Glands Pineal Gland Adrenal Glands Thyroid Gland Secretes T4
-Relies on levels of iodine
Calcitonin (peptide): lowers calcium level
Delicate balance of Calcium
-Tetany vs. Precipitates
T3 and T4 (amines): metabolism, heart rate, blood pressure, growth and development, and body temperature
*Critical for brain development in babies*
Regulated by TSH Terms to Know Hormone: an endocrine signal secreted into fluid, mostly the blood
Endocrine Signaling: "secreted molecules diffuse into the bloodstream and trigger responses in target cells anywhere in the body" (textbook, 975)
Tropic Hormones: hormones that target glands
Nontropic Hormones: hormones that target cells for a direction reaction
Gland: a group of endocrine cells
Amines: hormones that contain nitrogen
Peptides: hormones that are made of amino acids
Steroids: hormones that are derived from cholesterol Location: on the thyroid
Hormones Produced:
Parathyroid Hormone (PTH)
Regulated by: Calcium in blood Counteracts Calcitonin
PTH: causes decomposition of calcium
stimulates reabsorption of calcium
promotes conversion of Vitamin D Location: center of brain
Hormone Produced: Melatonin
Regulated by: light/dark cycles
and SCN Light/Dark cycles
Melatonin secreted at night
Controls energy levels
Helps immune and digestion systems
Skin pigmentation
Controlled by SCN
Receptors in retina, brain, pituitary, and
hypothalamus Location: top of kidneys
Hormones produced:
Regulated by: nervous system, ACTH, Potassium in blood, and angiotensin II Works Cited
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