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36 Cards in this Set
- Front
- Back
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hormone
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a chemical messenger
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bright light
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the cones of the retina are used
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dim light
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the rods accomplish most of your vision
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dendrites
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carry impulses toward the cell body
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axons
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carry impulses away from the cell body
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epinephrine
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the hormone also called adrenaline that is secreted by the adrenal glands
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insulin
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the hormone that helps regulate the amount of sugar in the blood
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pituitary gland
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the gland that secretes the greatest number of hormones and that is known as the master gland of the body
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How are hormones transported?
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through the blood
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The nervous system is to impulses as the endocrine system is to....
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hormones
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nerves
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the long, think branches from the central nervous system
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peripheral
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the division of the nervous system that contains the sense organs, such as eyes and ears, are called the ____ system
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pancreas
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the gland responsible for forming insulin
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Three things about hormones....
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made in one tissue and transported to the tissues they affect; chemical messengers; highly specific in their functions
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endocrine system
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the system of glands that produce hormones that control and coordinate the body
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thyroxine
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a hormone that is produced by the thyroid gland
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pituitary gland
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produced by the growth hormone
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colorblind
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a person who has certain cones that do NOT function properly
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spinal nerves
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impulses from the spinal cord to the muscles of the arm are carried on these nerves
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white blood cells
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fight infection
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the literal meaning of homeostasis
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"staying the same"
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urinary bladder
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a muscular bag that temporarily stores waste liquids before they are passed from the body
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ureter
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tube leading from a kidney to the bladder
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dialysis
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a machine that is used as a substitute kidney
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kidneys
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the main organs of the excretory system
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pulse
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the rhythmic expansion of the arteries caused by pressure from blood being forced through an artery
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leukocytes or white blood cells
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blood cells that respond to infection
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hemoglobin
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iron-containing pigment that makes blood appear red
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aorta
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the largest artery in the heart
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veins
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blood travels toward the heart by means of ____
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arteries
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blood travels away from the heart by means of ____
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kidneys
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filtering organs of the excretory system
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antibodies
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produced by plasma cells
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antibodies
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chemicals that are made by the body and that attack invading organisms or poisons
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aorta
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the main artery that carries blood from the heart to the body
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homeostasis
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the maintenance of the internal conditions of your body
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