Let's dive into the fascinating world of muscle tissue! Our bodies have three distinct types of muscle, each with unique characteristics and specific roles.
1. Skeletal Muscle
Skeletal muscle is what most people think of when they hear the word "muscle" - it's the tissue that helps us move voluntarily.
Key characteristics:
Striated (striped) appearance under a microscope
Voluntary control
Multinucleated (multiple nuclei)
Fast-acting
Can fatigue quickly
The striations in skeletal muscle are caused by the organized arrangement of actin and myosin filaments, creating a distinctive banded pattern.
2. Cardiac Muscle
Found exclusively in the heart, cardiac muscle is a unique specialized tissue.
Key characteristics:
Striated appearance (like skeletal muscle)
Involuntary control
Single nucleus per cell
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What are the three main types of muscles in the human body?
