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Histology
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Groups of closely related associated cells that are similar in structure and perform a common function are tissue. Cytology – the study of cells Histology – the study of tissue
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Components of Tissues Cells Extracellular matrix
may be fluid or protein fibers Matrix Cell
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4 Basic Types of Tissue in Humans
Epithelial tissue Connective tissue 3. Muscle tissue 4. Nervous tissue
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Muscle Tissue
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Characteristics highly cellular vascular contractibility
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3 Types of Muscle Tissue:
3. Smooth 2. Cardiac 1. Skeletal
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1. Skeletal Muscle Tissue
Movement Voluntary Multinucleated Striated – banded
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2. Cardiac Muscle Tissue Heart only Pumps Involuntary
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2. Cardiac Muscle Tissue Striated
Intercalated disks – connects cell to cell
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3. Smooth Muscle Tissue lacks striations involuntary
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3. Smooth Muscle Tissue walls of hollow organs
ex: - GI tract - urinary tracts - uterus arteries
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