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Science chap.19
The Skeleton and the Muscles
| Question | Answer |
|---|---|
| biceps | either of two flexor muscles |
| bone tissue | strong connective tissue having deposits of hard minerals between its living cells |
| breastbone | the sternum |
| cartilage tissue | strong, slippery, flexible supporting tissue of animals; is softer than bone |
| fulcrum | the support, or point of rest, on which a lever turns in moving a body |
| hip bones | the ilium |
| involuntary movement | movement that cannot be controlled by the will, such as pumping of heart |
| joint | the place at which two things, or separate parts of one thing, are joined or united, either rigidly or in such a way as to permit motion; juncture |
| lever | rigid bar that pivots about one point and that is used to move an object at a second point by a force applied at a third |
| ligament | band of tissue, usually white and fibrous, serving to connect bones, hold organs in place, etc |
| limbs | a part or member of an animal body distinct from the head and trunk, as a leg, arm, or wing |
| marrow | soft, fatty, vascular tissue in the interior cavities of bones that is a major site of blood cell production |
| muscles | a tissue composed of cells or fibers, the contraction of which produces movement in the body |
| ribs | one of a series of curved bones that are articulated with the vertebrae and occur in pairs, 12 in humans, on each side of the vertebrate body, certain pairs being connected with the sternum and forming the thoracic wall |
| skeleton | .the bones of a human or an animal considered as a whole, together forming the framework of the body |
| skull | the bony framework of the head, enclosing the brain and supporting the face; the skeleton of the head |
| spine | a stiff, pointed process or appendage on an animal, as a quill of a porcupine, or a sharp, bony ray in the fin of a fish |
| tendons | a cord or band of dense, tough, inelastic, white, fibrous tissue, serving to connect a muscle with a bone or part; sinew. |
| triceps | a muscle having three heads or points of origin, esp. the muscle on the back of the arm, the action of which straightens the elbow |
| vertebrae | any of the bones or segments composing the spinal column, consisting typically of a cylindrical body and an arch with various processes, and forming a foramen, or opening, through which the spinal cord passes |
| voluntary movement | response controlled by the will |
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daisy37311
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