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24 Cards in this Set
- Front
- Back
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What are the levels of organization in animals in order?
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1.cells
2.tissues 3.organs 4.organ systems |
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A group of tissues that work together make what?
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organ
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A group of organs that work together make a/an ?????????????
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organ system
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the basic unit of structure of life is?
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cell
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what is important and keeps are body stable?
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homeostasis
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What works with muscles, the nervous system and skeletal systems to make us move?
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muscles
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What does the skull do?
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protect brain
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How do muscles work?
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while one contracts, another relaxes and returns to original length.
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Muscles work in pairs because:
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they can only contract
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The __________________ system is very important to the maintainability of body because it helps transport oxygen to body
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Cardiovascular (Circulatory)
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What does the Circulatory system consist of?
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heart, blood vessels, veins.
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What fights disease?
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White blood Cells
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What carries oxygen to body
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Red blood cells
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What helps blood clots
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Platelets
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What is the liquid part of blood.
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Plasma
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What do Valves do?
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keep the blood going in one direction
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What are the lower chambers heart the pump blood?
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Ventricles
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What are the upper chambers heart the receive blood?
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Atrium/ Atria
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Nervous tissue allows us to :
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see, think, hear,
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What passes vibrations to hammer?
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eardrum
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Why is the external ear like a funnel.
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So it can collect sound and give it to inner ear.
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What are the cell in back of eye
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Retina
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What happens to light when it goes through lens
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focuses and bends
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The ________ controls the amount of light entering the eye.
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iris
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