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27 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Central Nervous System
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Includes the brain and spinal cord. It also processes ingoing and outgoing informantion
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It is one of the two systems within a system
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Peripheral Nervous System
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Consists of the communication pathways, or nerves.
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One of the two systems within a system.
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Neuron
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Specialized cells that transfer messages throughout the body in a form of electrical messages
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Impulse
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The electrical message that passes along a neuron.
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Receptor
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Specialized dendrites in sensory neurons that detect changes in and outside of the body.
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Nerves
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Axons bundled together with connective tissues and blood vessels.
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Brain
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Part of your CNS, the nervous systems largest organ.
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think. just think
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Reflex
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A quick, involuntary action.
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If a ball was flying at your face, your natural ______ is to put your hands up.
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Retina
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A light sensitive layer in the back of your eye
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Rods
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They can detect very dim light. They are important for night vision and seeing grays.
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Cones
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These give you a very colorful view of the world.
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Lens
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A piece of curved material behind the pupil that allows light to pass through but changes its direction.
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Iris
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The part of the eye that gives it its color.
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Cochlea
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A tiny snail shaped organ on the inside of the ear.
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Endocrine system
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It is involved with the control of slower long-term processes such as fluid balance, growth, and sexual development.
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It is a system
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Hormones
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The chemicals made and produced by endocrine glands.
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They can affect your mood
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Gland
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A group of cells that makes special chemicals for your body.
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there are 8 of them
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Feedback controls
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They turn endocrine glands on and off.
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Pituitary gland
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Secretes hormones that affect other glands and organs
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Thyroid gland
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Increases the rate at which you use energy
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Parathyroid glands
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It is behind the thyroid, it regulates calcium levels in the blood
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Thymus gland
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Regulates the immune system which helps you fight disease
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Testes
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In males, produces hormones involved in reproduction
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Ovaries
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Produce hormones involved in reproduction
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Pancreas
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Regulates blood sugar levels
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Adrenal glands
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Helps the body respond to stress and danger
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Motor Neurons
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neurons that send impulses from the brain to the spinal cord and other systems
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