Muscle tissue Medical biology lab 25/3/2018 farah e ismaeel

There are 3 types of muscle tissue: skeletal smooth cardiac farah e ismaeel

Classification of Muscle Cells Striated vs. Nonstriated striated have a banded appearance (stripes) Single nucleus or multinucleated cells Muscle cells can be controlled voluntarily (consciously) or involuntarily (automatically) farah e ismaeel

Skeletal Muscle Cells Striated, voluntary, and multinucleated are long, thin and cylindrical; they are attached to bones and move our skeleton are usually called “muscle fibers” farah e ismaeel

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Skeletal Muscle Tissue farah e ismaeel

Cardiac Muscle Cells striated, involuntary, and single nucleus are called “cardiocytes” and found in heart walls branching cells connect at intercalated disks which allow contractions to occur faster Gap junctions couple all fibers for rhythmic contraction farah e ismaeel

Cardiac Muscle Tissue farah e ismaeel

Smooth Muscle Cells non-striated, involuntary, and single nucleus are small and pointed at their ends can divide and regenerate new cells found in hollow organs like the intestine, bladder, lungs, and blood vessels move substances through hollow opening by contracting slowly; they squeeze things through like a tube of toothpaste farah e ismaeel

Smooth Muscle Tissue farah e ismaeel

Review What You’ve Learned… Muscle Type Striated? # of nuclei Voluntary or Involuntary Skeletal Cardiac Smooth Multi-nucleated Yes Voluntary Single Nucleus Yes Involuntary Single Nucleus No Involuntary farah e ismaeel

Thank you farah e ismaeel