1. Skeletal Muscle:

* Appearance: Striated (striped) and voluntary.

* Function: Responsible for movement of bones and other structures.

* Location: Attached to bones, skin, and other muscles.

* Features:

* Multinucleated cells (muscle fibers) with a long, cylindrical shape.

* Striations are caused by the arrangement of contractile proteins, actin and myosin.

* Voluntary control by the nervous system.

* Rapid, forceful contractions.

2. Smooth Muscle:

* Appearance: Non-striated (smooth) and involuntary.

* Function: Controls movement of internal organs, blood vessels, and other structures.

* Location: Walls of hollow organs like the stomach, intestines, bladder, and blood vessels.

* Features:

* Single, spindle-shaped cells with a single nucleus.

* No striations because the contractile proteins are arranged differently.

* Involuntary control by the autonomic nervous system and hormones.

* Slow, sustained contractions.

3. Cardiac Muscle:

* Appearance: Striated (striped) and involuntary.

* Function: Pumps blood throughout the body.

* Location: Walls of the heart.

* Features:

* Branched, interconnected cells with a single nucleus.

* Striations similar to skeletal muscle, but the cells are shorter and branched.

* Involuntary control by the autonomic nervous system.

* Rhythmic, continuous contractions.

Here's a table summarizing the key differences:

| Feature | Skeletal Muscle | Smooth Muscle | Cardiac Muscle |

|---|---|---|---|

| Appearance | Striated | Non-striated | Striated |

| Control | Voluntary | Involuntary | Involuntary |

| Location | Attached to bones, skin, and other muscles | Walls of hollow organs, blood vessels | Walls of the heart |

| Cell Shape | Long, cylindrical, multinucleated | Spindle-shaped, single nucleus | Branched, single nucleus |

| Contraction Speed | Fast, forceful | Slow, sustained | Rhythmic, continuous |

Understanding these distinctions is essential for comprehending the complex functions of the muscular system.