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what are the 3 histological types of muscle tissue
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what is muscle tissue responsible for?
highly cellular & very vascular and is responsible for the movement of the body
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what is muscle tissue composed of
composed of filaments of actin & myosin called myofilaments
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what does muscle tissue exert on other tissues?
- move limbs
- push blood through a vessel
- expel urine
also source of body heat!
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only one that is voluntary !
skeletal muscle
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covered with connective tissue & attached to the bones and skin to cause movements
skeletal
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The look banded or striated because of the orderly arrangement of their myofilament
cells are long, cylindrical unbranched with and called muscle fiber
and has multiple peripheral nuclei
skeletal
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Used for movement, facial expression, posture, breathing, speech, swallowing and excretion
skeletal
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Found only in vertebrate heart
this one is involuntary
has striations
has shorter cells called myocytes
cardiac muscle
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has intercalated discs (gap junctions)
blood pumping is done by this muscle
fibers branch
cardiac muscle
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Small spindle-shaped fusiform cells
also is involuntary
uninucleate
NOT striated
smooth muscle
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sheets of muscle found in walls of most hollow organs , iris, hair follicles and sphincters .
Often arranged in two layers: circular and longitudinal
smooth muscle
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FUNCTIONS are swallowing, GI tract movements, labor contractions, control of airflow, erection of hairs and control of pupi
smooth muscle
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