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Unit 3 Lesson 3 "How Cells Are Organized"
| Term | Definition |
|---|---|
| Cells of the same type that work together make this up | tissue |
| Several tissues that work together to do a certain job make this up | organ |
| Organs that work together to do a job for the body make this up | organ system |
| Nerves carry information to and from this | brain |
| Your nervous system is made up of tiny structures called... | nerve cells |
| Sensing your surroundings and communicating information within the body are the main jobs of what body system | nervous system |
| A rope like bundle of nerve tissue that runs along your backbone | spinal cord |
| Organ made mostly of muscle tissue | heart |
| Largest organ of the body | skin |
| Tissue that holds tissues and organs together | connective tissue |
| Connect muscles to bone | tendons |
| Your arms and legs could not move, and your heart could not beat without this type of tissue | muscle tissue |
| Your brain and spine are made of this type of tissue | nerve tissue |
| Connects muscles to bones | tendons |
| Rope-like bundle of nerve tissue | spinal cord |
| Body system that protects the body's organs | Integumentary System |
| Part of the eye that gives your eye color | iris |
| Opening in the iris that allows light to enter | pupil |
| The back of the eye | retina |
| Sense organ that lets you see the world | eye |
| The organ of smell | nose |
| The part of your ear that you see | outer ear |
| Senses chemicals in food | taste buds |
| The organ of hearing | ear |
| The organ of taste | tongue |
| Protective layer covering your body | skin |
| Outer layer of the skin | epidermis |
| Inner layer of the skin | dermis |
| Special structures that sense tough, heat, cold, pain, pressure, and vibration | nerve endings |
| The four types of tissues | muscle, connective, nerve, and epithelial |
| The five senses | hearing, tasting, smelling, seeing, and touch |
| Taste buds detect these tastes | sweet, sour, bitter, salty, and meaty |
| Tiny bones in the human ear | hammer, anvil, and stirrup |
| The three layers of the skin | epidermis, dermis, and nerve endings |
| Organs that make up the nervous system | brain, spinal cord, and nerves |
| Organs that make up the integumentary system | skin, nails, and hair |
| The main pathway for information traveling to and from the brain | spinal cord |
| Makes up the outer layer of your skin | epithelial tissue |
| Tissue that moves arms and legs, and helps your heart to beat | muscle tissue |
| Tissue that holds organs together | connective tissue |
| The brain and spine are made of this tissue | nerve tissue |