Muscle and Neural Tissue

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23 Terms

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Actin and Myosin

Filaments within muscle fibers

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Contraction

Function of muscle fibers

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Skeletal Muscle Tissue

forms the flesh of the body, cells are long, cylindrical, striated (striped) and multi-nucleated (peripheral) with many mitochondria, have blunt ends

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Location of Skeletal Muscle Tissue

-Combined with connective tissues and neural tissue in skeletal muscles

-Attached to skeleton or skin

- tongue

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Function of Skeletal Muscle Tissue

-Moves or stabilizes the position of the skeleton

-guards entrances and exits to the digestive, respiratory, and urinary tracts

-generates heat

-protects internal organs

-Voluntary muscle

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Skeletal Muscle Tissue

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Cardiac Muscle Tissue

cells are short, branched, single nucleus, with some striations, cells connected by intercalated discs (joints between cells)
-gap junctions allow ions to pass freely from cell to cell (rapid electrical impulse so cells beat in unison)

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Location of cardiac muscle tissue

Heart

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Function of cardiac muscle tissue

-Circulates blood by causing the heart to pump

-maintains blood pressure

-involuntary muscle

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Cardiac Muscle Tissue

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Smooth Muscle Tissue

-Cells are short, spindle-shaped and nonstriated, single, central nucleus

-When contracts, cavity becomes smaller, when relax they expand

-Moves slower than other muscle types

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Location of smooth muscle tissue

Found in the walls of hollow organs: digestive, respiratory, urinary and reproductive organs, blood vessels, skin (arrector pili)

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Function of smooth muscle tissue

-Moves food, urine and reproductive tract secretions

-controls diameter of respiratory passageways

- regulates diameter of blood vessels

-Involuntary muscle

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Smooth Muscle Tissue

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Location of Neural Tissue

Brain, spinal cord, nerves

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Function of Neural Tissue

Communicate through electrical impulses

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Neuron

cell body with dendrites, long axon

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Neuroglia

designed to insulate, support, and protect neurons

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Neurons and Neuroglia

The 2 types of neural tissue

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Neuron

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Neuroglia

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Intercalated discs

joins between cells

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Gap junctions

allow ions to pass freely from cell to cell (rapid electrical impulse so cells beat in unison)