Muscular System

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MUSCULAR SYSTEM

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OVERVIEW OF MUSCULAR TISSUE

I. TYPES OF MUSCULAR TISSUE

A. Skeletal Muscle Tissue
* link to bones; move parts of the skeleton
* striated
* voluntary
* has limited capacity for regeneration
* multinucleated, at the periphery

B. Cardiac Muscle Tissue
* forms the bulk of the heart wall
* striated
* voluntary
* can remedy under certain conditions
* fibers are branched
* single, centrally located nucleus

C. brush up Muscle Tissue
* located in the walls of hollow internal structures
* participates in internal processes
* nonstriated
* involuntary
* oval, centrally located nucleus

II. FUNCTIONS OF MUSCULAR TISSUE

A. Producing trunk movements
B. alter body positions
C. Storing and moving substances within the body
D. Producing heat

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SKELETAL MUSCLE TISSUE

I. colligation TISSUE COMPONENTS

Connective interweave surrounds and protects vim fibers.

A.



Subcutaneous forge/Hypodermis
* composed of areolar connective tissue and adipose tissue
* provides passageway for nerves, blood vessels, and lymphatic vessels to enter and exit the muscles
* adipose tissue serves as an insulator, protects muscle from physical trauma

B. Fascia
* dense sheet or broad band of dense irregular connective tissue
* lines the body wall and limbs
* supports and surrounds muscles and other organs of the body
* allows free movements
* carries nerves, blood vessels and lymphatic vessels
* supports and surrounds muscles and other organs of the body
* fills empty spaces
* three layers:
1. epimysium
* wraps the entire muscle
2. perimysium
* surrounds bundles of muscle fibers called fascicles
3. endomysium
* wraps individual muscle fibers

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