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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Muscle Tissue  Function is to produce movement (contract)  Contractive cells.

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Presentation on theme: "Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Muscle Tissue  Function is to produce movement (contract)  Contractive cells."— Presentation transcript:

1 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Muscle Tissue  Function is to produce movement (contract)  Contractive cells can shorten & thicken  Three types  Skeletal muscle  Cardiac muscle  Smooth muscle

2 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Muscle Tissue Types  Skeletal muscle  Structure:  Muscle Fiber – long, cylindrical cell  Many nuclei in each cell  Cells are striated – alternating light & dark pattern  Function :  Voluntary movement:  Pull bones (body movement)  Pull skin (facial expression)  Location :  Attached to bones Figure 3.20a

3 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Muscle Tissue Types  Cardiac muscle  Structure:  Cells are striated  One nucleus per cell  Cells joined end-to-end with intercalated disk in-between.  Function:  Involuntary heart movement  Pumping blood  Location:  Heart muscle Figure 3.20b

4 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Muscle Tissue Types  Smooth muscle  Structure  Shorter cells  One nucleus per cell  No visible striations  Function  Involuntary movement  Peristalsis- wave-like movement pushes food through digestive system  Location  Walls of hollow internal organs  Ex: Stomach, Intestines, Bladder, Uterus, Blood vessels Figure 3.20c

5 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Nervous Tissue  Structure:  Nerve cells- neurons with cytoplasmic extensions  Neuroglial cells- support neurons  Function:  Sense changes in the environment  Respond by transmitting impulses  Location:  Brain  Spinal cord  Peripheral nerves Figure 3.21


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