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Science Vocab Unit 9
Science Vocab Unit 9 Quiz #1
| Term | Definition |
|---|---|
| Organism | a living thing made of parts that work together to meet its needs. |
| Cell | the smallest unit of a living or once living organism |
| Tissue | same type of cells working together form a tissue. |
| Organ | different tissues working together to perform a function/job. |
| Organ system | groups of different organs working together to perform a function/job. |
| Muscular system | organs that work with the skeletal system to pull on the bones & move them; protects bones. Muscles work in pairs- extend & contract. |
| Skeletal system | bones that provide the framework and structure of our bodies; protection. |
| Nervous system | information center- sends messages from the brain to all cells telling them what to do. |
| Brain | main organ of the nervous system that processes information. |
| Spinal Cord | part of the nervous system that runs through the vertebrae (back bones) & sends messages to and from the brain to all parts of your body. |
| Nerve cells, neurons, branching cells | part of the nervous system; carry information to and from the brain; information jumps from one cell to another; allow you to feel pain. |
| Integumentary System | made up of skin, nails, and hair. |
| Skin | the largest organ of your body; protects bones, muscles, organs from infections- germs, bacteria, and is waterproof; makes sweat (perspiration) to cool skin when it evaporates. |
| Epidermis | Outermost layer of skin that you can see; dead skin cells (epi- means outer) |
| Dermis | beneath the epidermis with living cells; many thin layers thick. |
| Nerve cells, oil glands, blood vessels, sweat glands, fat cells | part of the dermis |
| Antennae | some insects have these to detect motion, and sense things they can’t see. |
| Senses | 5- include sight (eyes), taste (mouth, tongue), smell (nose), hearing (nose), touch (skin, nerves); give information about the environment around us. |
| Bones | part of the skeletal system; support, protect inner organs, and store minerals. |
| Joints | skeletal system; place where two bones meet- knees, elbows, fingers, toes, skull, shoulder |
| Ligaments | skeletal system; connect the bones of a joint. |
| Cartilage | skeletal system; cushions the ends of bones and is flexible- end of nose, ears. |
| Respiratory System | breathing; in animals, take in oxygen and release carbon dioxide; respiration begins with the mouth and nose. Contains trachea, lungs, bronchi, bronchioles, alveoli, pharynx, larynx, diaphragm |
| Trachea | respiratory system- wind pipe- takes the air from the mouth and nose to the lungs. |
| Lungs | main organs of the respiratory system that expand when inhaling. |
| Bronchi (2) | when the trachea gets to the lungs, it divides into the bronchi- 2 large branches & keeps transporting the air. |
| Bronchioles | means small bronchi; many small branches that come from the bronchi & carry air to all parts of the lungs. |
| Alveoli (air sacs) | thousands at the ends of the bronchioles where the gas exchange takes place- surrounded by a network of capillaries that exchanges oxygen and carbon dioxide. |
| Asthma | a disease where the bronchi become swollen and make the bronchi & bronchioles smaller (constricted). |
| Diaphragm | muscle under the lungs that moves down to let lungs expand with air when inhaling & move up when you exhale. |
Created by:
ImagineCharter5th
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