LCMS MR.VS 3RD&4TH PERIOD LIFE SCIENCE
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42 terms
Terms | Definitions |
|---|---|
 Muscle Tissue | a body tissue that contracts or shortens, making body parts move |
| Nervous Tissue | a body tissue that carries electrical messages back and forth between the brain and every other part of the body |
| Connective Tissue | a body tissue that provides support for the body and connects all of its parts |
| Epithelial Tissue | a body tissue that covers the surfaces of the body inside and out |
| Organ System | a group of organs that work together to perform a major function in the body |
| Digestion | the process by which the body breaks down food into small nutrient molecules |
| Kidney | a major organ of the excretory system that removes urea and other wastes from the blood |
| Nephron | small filtering structure found in the kidneys that removes waste from blood and produces urine |
| Urinary Bladder | a sacklike muscular organ that stores urine until it is eliminated from the body |
| Pathogen | an organism that causes disease |
| Antibody | a protein produced by a b cell of the immune system that destroys pathogens |
| Immunity | the bodys ability to destroy pathogens befor they can cause disease |
| Homeostasis | the maintenance of stable internal conditions in an organism |
| Stress | the reaction of a persons body to potentially threatening, challenge, or disturbing events |
| Skeleton | the inner framework made of all the bones of the body |
| Vertebrae | the small bones that make up the backbone |
| Joint | a place in the body where two bones come together |
| Ligament | strong connective tissue that holds bones together in movable joints |
| Cartilage | a connective tissue that is more flexible than bone and that protects the ends of bones and keep them from rubbing together |
| Compact Bone | Hard, dence bone tissue that is beneath the outer membrane of a bone |
| Spongy Bone | layer of bone tissue having many small spaces and found just inside the layer of compact bone |
| Marrow | the soft connective tissue that fills the internal spaces in bone |
| Osteoporosis | a condition in which the bodys bones become weak and break easily |
| Involuntary Muscle | a muscle that is not under conscious control |
| Voluntary Muscle | a muscle that is under conscious control |
| Skeletal Muscle | a muscle that is attached to the bones of the skeleton and provides the force that moves the bones |
| Tendon | strong connective tissue that attaches muscle to bone |
| Striated Muscle | a muscle that appears banded; also called skeletal muscle |
| Smooth Muscle | involuntary muscle found inside many internal organs of the body |
| Cardiac Muscle | muscle tissue found only in the heart |
| Force | a push or pull exerted on an object |
| Work | force exerted on an object that causes it to move |
| Machine | a device that changes the amount of force exerted, the distance over which a force is exerted, or the direction in which force is exerted |
| Lever | a simple machine that consists of a rigid bar that pivots about a fixed point |
| Fulcrum | a fixed point on which a lever pivots |
| Effort Force | the force you exert on a lever |
| Effort Distance | the distance you push down on a lever |
| Resistance Force | the force a lever exerts on an object |
| Resistance Distance | the distance a lever pushes up on an object |
| Mechanical Advantage | for a lever, the ratio of the resistance force to the effort force |
| Effort Arm | for a lever, the distance from the fulcrum to the effort force |
| Resistance Arm | for a lever, the distance from the fulcrum to the resistance force |
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