what are the different types of muscular tissue? draw diagrams and describe it
Answers
Answer:
n the muscular system, muscle tissue is categorized into three distinct types: skeletal, cardiac, and smooth. Each type of muscle tissue in the human body has a unique structure and a specific role. Skeletal muscle moves bones and other structures. Cardiac muscle contracts the heart to pump blood.
Explanation:
Types of Muscular Tissue
The muscular tissue is of three types:
Skeletal Muscle Tissue
Smooth Muscle Tissue
Cardiac Muscle Tissue
Skeletal Muscle Tissue
These muscles are attached to the skeleton and help in its movement.
These muscles are also known as striated muscles because of the presence of alternate patterns of light and dark bands.
These light and dark bands are sarcomeres which are highly organized structures of actin, myosin, and proteins. These add to the contractility and extensibility of the muscles.
Skeletal muscles are voluntary muscles composed of muscle fibers.
40% of our body mass comprises skeletal muscles.
Each skeletal tissue contains myofibrils.
The cells of these tissues are multinucleated.
These are provided with blood vessels and many elongated mitochondria and glycogen granules.
They bring about the movement of the organs of the body.
Smooth Muscle Tissue
These are non-striated, involuntary muscles controlled by the Autonomous Nervous System.
It stimulates the contractility of the digestive, urinary, reproductive systems, blood vessels, and airways.
The actin and myosin filaments are very thin and arranged randomly, hence no striations.
The cells are spindle-shaped with a single nucleus.
Cardiac Muscle Tissue
These are found only in the heart.
These are involuntary muscles and the heart pumps the blood through cardiac contractions.
The cells of the cardiac muscles known as the cardiomyocytes are striated.
They are single-celled and uninucleated.
The ends of the cells are joined and the junctions are called intercalated discs. The cells are attached to each other by desmosomes.
