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13 Cards in this Set
- Front
- Back
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Define Chemical
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Atoms and molecules. Atoms such as nitrogen, oxygen, and calcium are essential to the maintenance of life. These atoms combine to form molecules in the body. Examples of molecules are proteins, carbohydrates, fats, and vitamins.
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Define Cellular
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Molecules combine to form cells. The cells of the body are the basic structural and functional units of an organism. Examples of cells in the body include muscle cells, nerve cells, and blood cells.
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Define Tissue
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Tissues are made up of groups of cells and the materials surrounding them. They work together to perform specific functions.
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Name the Four different types of Tissue
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1-epithilial
2-muscle 3-connective 4-nervous |
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Name the six levels of Organization
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1-chemical
2-cellular 3-tissue 4-organ 5-system 6-orgamism |
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Define Epthelial Tissue
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Protective tissue found in the linings of cavities and organs and as part of the integumentary system, or skin. This tissue helps to protect the structures it lines from injury and fluid loss.
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Define Muscle Tissue
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Responsible for movement of the body. Skeletal - long fibers, allows for voluntary body movements. Smooth - lines the internal organs, carries out primarily involuntary body movements that assist in organ function. Cardiac - is found only in the heart and is specifically designed to maintain heartbeat and blood flow.
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Define Connective Tissue
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Tissue that binds the body together and supports posture and function. Supporting connective - consists of the bones and cartilage of the body, Binding connective - tendons and ligaments—thick strong tissue that binds muscle to bone and bones to each other. Fibrous connective - binding material, tissue connects muscles together and binds the skin to the rest of the body.
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Define Nervous Tissue
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Composed of nerve cells. It is used as the communication system of the body by passing electronic messages to and from the brain. This allows for all motor functions, both voluntary and involuntary.
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Define Organ
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The different kinds of tissue discussed above combine to form the organ level. The organs are composed of two or more types of these tissues. Each organ has specific functions and recognizable shapes. Some examples of organs are the heart, lungs, brain, liver, and kidneys.
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Define System
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A system is made up of several organs that have a common function. For example, the organs that are a part of the digestive system break down and absorb food. These organs include the mouth, pharynx (throat), esophagus, stomach, small intestine, and large intestine.
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Define Organism
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The largest structural level is the organism level. All the parts which make up the body and function with each other form the total organism (one living individual).
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Define Disease
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“Any deviation from or interruption of the normal structure or function of any part, organ or system (or any combination thereof) of the body manifested by a characteristic set of symptoms and signs, and whose etiology, pathology, and prognosis may be known or unknown
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