Title Part 3 Muscle and Nervous Tissue.pdf ✅

➢ Muscle tissue is composed of cells that have the ability to shorten or contract in order to produce movement of the body parts Properties of Muscular Tissue ❑ Contractibility – Ability of muscle cells to shorten ❑ Excitability – Muscle tissue responds to a stimulus delivered from neuron or hormone ❑ Extensibility – Ability to be stretched ❑ Elasticity – Ability to recoil back to its original length after being stretched
Structure of Muscular tissue ❑ Muscular tissues are bundled together and surrounded by tough connective tissue known as epimysium ❑ The tissue made of many muscle fibres (myocytes) ❑ Fascicles are surrounded by a protective layer known as perimysium ❑ Muscle fibres are composed of numerous fine myofibrils ❑ Muscle fibres can contract and relax ❑ Muscles take part in locomotion and movements
TYPES OF MUSCULAR TISSUE Muscular tissue Skeletal muscles Smooth muscles Cardiac muscles
❑ Skeletal muscles are attached to the skeleton ❑ They are also known as striated muscles because of the presence of alternate patterns of light and dark bands ❑ These light and dark bands are highly organized structures of actin, myosin, and proteins. ❑ These add to the contractility and extensibility of the muscles ❑ Skeletal muscles are also known as voluntary muscles ❑ Skeletal muscle tissue is composed of long cells called muscle fibers that have multinucleated ❑ They play a vital role in everyday activities