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15 Cards in this Set
- Front
- Back
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Metabolism
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The sum of all chemical reactions that occur in the body.
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catabolic reactions
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break down large chemicals and release energy
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anabolic reactions
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build up large chemicals and require energy
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Ingestion
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the acquisition of food and other raw materials
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Digestion
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the process of converting food into a usable soluble form so that it can pass through membranes in the digestive tract and enter the body
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Absorbtion
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the passage of nutrient molecules through the lining of the digestive tract into the body proper. Absorbed molecules pass through cells lining the digestive tract by diffusion or active transport
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Transport
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the circulation of essential compounds required to nourish the tissues and the removal of waste products from the tissues
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Assimilation
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the building up of new tissues from digested food materials
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Respiration
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The consumption of oxygen by the body. Cells use oxygen to convert glucose into ATP, a ready source of energy for cellular activities.
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Excretion
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the removal of waste products (such as carbon dioxide, water, and urea) produced during metabolic processes like respiration and assimilation.
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Synthesis
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the creation of complex molecules from simple ones (anabolism)
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Regulation
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the control of physiological activities. The body's metabolism functions to maintain its internal environment in a changing external environment. This is known as homeostasis and includes regulation by hormones and the nervous system. Irritability is the ability to respond toa stiumuls and is part of regulation.
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Growth
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an increase in size caused by a synthesis of new materials
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Photosynthesis
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the process by which plants covnert CO2 and H20 into carbohydrates. Sunligh is harnessed by cholorophyll to drive this reaction.
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Reproduction
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the generation of additional individuals of a species
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