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Muscle Tissue: composed of cells (‘fibers’) specialized for contraction – Skeletal.

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Presentation on theme: "Muscle Tissue: composed of cells (‘fibers’) specialized for contraction – Skeletal."— Presentation transcript:

1 Muscle Tissue: composed of cells (‘fibers’) specialized for contraction – Skeletal

2 Muscle Tissue: composed of cells (‘fibers’) specialized for contraction – Skeletal – Cardiac

3 Muscle Tissue: composed of cells (‘fibers’) specialized for contraction – Skeletal – Cardiac – Smooth

4 Muscle Tissue: composed of cells (‘fibers’) specialized for contraction – Skeletal – Cardiac – Smooth  All muscle tissues have a reticular fiber matrix

5 Skeletal Muscle Tissue – Composed of closely packed skeletal muscle cells

6 Skeletal Muscle Tissue – Features of skeletal muscle cells: Striated Can be very long Multinucleated Cannot divide, but new cells can be produced from “satellite cells” Require neural stimulation

7 Skeletal Muscle Tissue – Features of skeletal muscle cells: Striated Can be very long Multinucleated Cannot divide, but new cells can be produced from “satellite cells” Require neural stimulation Voluntary

8 – Functions of Skeletal Muscle Tissue Voluntary movement

9 – Functions of Skeletal Muscle Tissue Voluntary movement Forms some sphincters

10 – Functions of Skeletal Muscle Tissue Voluntary movement Forms some sphincters Protection of some organs Stabilization of some joints Posture Heat production

11 Cardiac muscle tissue –Features of cardiac muscle cells Striated Branched Intercalated disks Cannot divide No satellite cells Contract rhythmically

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13 Cardiac muscle tissue – Features of cardiac muscle cells Striated Branched Intercalated disks Cannot divide No satellite cells Contract rhythmically No neural stimulation required

14 Smooth muscle tissue – Composed of smooth muscle cells – Features of smooth muscle cells Non-striated May not require neural stimulation Can divide Involuntary

15 – Functions of smooth muscle Internal movement of food, etc. Blood vessel diameter Bronchiole diameter Pupil diameter

16 Neural Tissue – Composed of neurons and glial cells (neuroglia)

17 Neural Tissue – Features of neurons

18 Neural Tissue – Features of neurons Cell body (soma)

19 Neural Tissue – Features of neurons Cell body (soma)

20 Neural Tissue – Features of neurons Cell body (soma) Dendrites

21 Neural Tissue – Features of neurons Cell body (soma) Dendrites Axons (nerve fibers)

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24 Neural Tissue – Features of neurons Cell body (soma) Dendrites Axons (nerve fibers) Cannot divide (?)

25 – Neural tissue arranged as ‘grey matter’ and ‘white matter’


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