Muscle and Nervous Tissue

Muscle and Nervous Tissue PowerPoint PPT Presentation


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Types Review. Muscular Tissue: generates the physical force needed to make body structures moveNervous tissue: detects changes in a variety of conditions inside and outside the body and responds by generating action potentials (nerve impulses) that help maintain homeostasis. MUSCLE TISSUE. consists

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Muscle and Nervous Tissue

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1. Chapter 4 Muscle and Nervous Tissue

2. Types Review Muscular Tissue: generates the physical force needed to make body structures move Nervous tissue: detects changes in a variety of conditions inside and outside the body and responds by generating action potentials (nerve impulses) that help maintain homeostasis

3. MUSCLE TISSUE consists of fibers (cells) that are modified for contraction (provide motion, maintenance of posture, and heat.) three types. Skeletal muscle tissue is attached to bones, is striated, and is voluntary Cardiac muscle tissue forms most of the heart wall, is striated, and is usually involuntary Smooth (visceral) muscle tissue is found in the walls of hollow internal structures (blood vessels and viscera), is non-striated, and is usually involuntary. It provides motion (e.g., constriction of blood vessels and airways, propulsion of foods through the gastrointestinal tract, and contraction of the urinary bladder and gallbadder)

4. Skeletal Muscle Cells are long cylinders with many peripheral nuclei Visible light and dark banding (looks striated) Voluntary (conscious control)

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