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Muscular System Physiology

QuestionAnswer
three types of muscle tissue skeletal, cardiac and smooth muscle
amount of weight that muscle composes in adults 40-50 %
number of skeletal muscles in the muscular system 700
functions of skeletal muscle body movement, maintenance of posture, protection and support, storage and movement of materials, heat production
how skeletal muscle acts in body movement contracts muscles attached to bones
how skeletal muscle acts in maintenance of posture stabilizes joints and helps maintain the body's posture
how skeletal muscle acts in protection and support protect the internal organs and support normal position
how skeletal muscle acts in storage and movement of materials contract and relax to regulate passage of material (allow voluntary expulsion of feces and urine)
how skeletal muscle acts in heat production continuously generate heat to maintain body temperature and shiver when cold to generate heat
characteristics of skeletal muscle tissue excitability, conductivity, contractility, elasticity, and extensibility
excitability responsive to nervous system stimulation
conductivity electrical change traveling along plasma membrane
contractility tension used to pull bones of skeleton
elasticity muscle returns to original length
extensibility lengthening of a muscle cell
skeletal muscle composed of thousands of muscle cells, typically as long as the entire muscle, often referred to as muscle fibers, organized into bundles (fascicles), and composed of fibers, connective tissue, blood vessels, and nerves
Created by: Nicolekr
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