Term
| 5 functions of the skeletal system |
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Definition
1.shape and support
2.protects organs
3.produces substances
4.store minerals
5.allows us to move |
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Term
| levels of orginazation of the body |
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Definition
| cells-tissue-organs-organ systems |
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Term
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Definition
1.cell membrane (boundry) 2.cytoplasm(jelly-like substance)
3.nucleus(control center) |
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Term
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Definition
1.undergo chemical reactions
2.grow and reproduce
3.get rid of waste |
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Term
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Definition
1.muscle
2.nervous
3.connective
4.epithelial |
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Term
| functions of the 4 tissue types |
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Definition
MUSCLE-contract, shorten, and carry out movements
NERVOUS-directs and controls movement carries electrical messages throughout your body
CONNECTIVE-provides support,connects all parts
EPITHELIAL-covers surfaces of your body inside and out |
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Term
| how stress affects homeostasis |
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Definition
| your heart beats faster and faster to give you more oxygen which throws off homeostasis |
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Term
| how our body maintains homeostasis |
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Definition
| all of the systems in the body work together. when our body is cold, you shiver. when you are hot, you sweat.Temperature affects homeostasis. |
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Term
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Definition
1. immovable joints
2. movable joints |
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Term
| examples of 4 types of joints |
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Definition
1.hinge(door, elbow)
2.glide(slide over top, wrist)
3.ball in socket(hip, shoulders)
4.pivot(neck) |
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Term
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Definition
outer membrane
compact bone
spongy bone
marrow |
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Term
| functions of compact,spongy, and marrow parts of the bone |
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Definition
COMPACT-hard, dense, not solid,covers all bone except ends, canals carry blood vessels and nerves from the bone's surface to the living cells within the bone
SPONGY-has many spaces in it, lightweight BUT strong, also found at the end of bones
MARROW- red-produces SOME blood cells,,yellow-stores fat |
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Term
| bone growth and development |
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Definition
1.bone forms new tissue as you grow
2.after you grow, still forms new tissue
3.new bone forms after accident
4.if you break a bone, new tissue will form to fill the gap betw. the ends of bones
5.as an infant, most of your skeleton is cartilage
6.over time, MOST of your cartilage is replaced by bone
7.not all of your cartilage is replaced by bone(ex. nose, ears) |
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