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Physiology

QuestionAnswer
What is diffusion? A natural phenomenon caused by the tendency of small particles to spread out evenly within any given space.
What is a concentration gradient? A measurable difference in concentration from one area to another.
What is the growth of functional new tissue called? Regeneration.
What tissues have a limited capacity to regenerate? Muscle and nervous.
What is contractility? The ability of muscle cells to contract, or shorten.
What is extensibility? The ability of muscle cells to extend, or stretch. It allows muscles to return to their resting length after having contracted.
What is the aerobic (oxygen-requiring) pathway? A catabolic process that produces the maximum amount of energy available from each glucose molecule. It is rather slow, compared to anaerobic pathway.
What is thermogenesis? An important function of skeletal muscles: heat production.
What does parathyroid hormone do? It stimulates breakdown of bone when blood calcium levels are low, in order to restore calcium levels. It also stimulates Vitamin D synthesis.
What can mechanical stress and weight-bearing exercise do for bone? It can trigger dramatic increases in the strength and density of bone tissue.
Created by: carmens6728
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