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Three Types Of Muscle Tissue

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The Muscular System
Types of Muscle Tissue
The muscular system is the network that converts energy into motion. Since muscles are essential to all animals they are incredibly complex. Muscles are able to self-heal and with practice, are able to grow substantially stronger. There are 3 types of muscle tissue found in the human body:
Skeletal Muscle: attached to bones and in most cases are responsible for voluntary movements
Smooth Muscle: responsible for involuntary free flow in vessels and intestines and contain one nucleus
Cardiac Muscle: involuntary muscle that is similar to smooth muscle and only found in the heart
Each type of muscle has a different structure and plays a different role in the body.

Skeletal Muscles
Skeletal muscles are usually attached to bones and are responsible for voluntary movements (dancing, shooting a basketball, etc.). Skeletal muscles have light and dark sequential bands that are called striations — striated muscle is another name for skeletal muscle. Most skeletal muscles are controlled by the central nervous system. The muscle cells …show more content…

Therefore, impulses from motor neurons control the contraction of skeletal muscle fibres. Neuromuscular junction is the point of contact between a motor neuron and a skeletal muscle cell. Vesicles located in the axon terminals of the neuron release a neurotransmitter called acetylcholine. The acetylcholine diffuses across the synapse, producing an impulse in the cell membrane of the muscular fibre. As a result of the impulse, calcium ions are released within the fibre. These calcium ions enable the interaction between actin and myosin filaments. Finally when the release of acetylcholine stops, the muscle cells relax from contraction. An enzyme is produced at the axon terminal which eradicates any remaining acetylcholine. The cell then pumps the calcium ions back into storage and the cross-bridges stop forming as contraction

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