NEET Exam > NEET Videos > Biology Class 11 > Muscular Tissue
Muscular Tissue Video Lecture | Biology Class 11 - NEET
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FAQs on Muscular Tissue Video Lecture - Biology Class 11 - NEET
| 1. What are the three types of muscular tissue found in the human body? |  |
Ans. The three types of muscular tissue found in the human body are skeletal muscle, smooth muscle, and cardiac muscle. Skeletal muscle is responsible for voluntary movements, smooth muscle is found in the walls of organs and blood vessels and is responsible for involuntary movements, while cardiac muscle makes up the heart and is responsible for its contraction.
| 2. How does skeletal muscle differ from smooth muscle? | |
Ans. Skeletal muscle and smooth muscle differ in various ways. Skeletal muscle is striated and under voluntary control, while smooth muscle is not striated and under involuntary control. Skeletal muscle is attached to bones and responsible for movements, while smooth muscle is found in the walls of organs and blood vessels and responsible for their contractions.
| 3. What is the function of cardiac muscle? | |
Ans. Cardiac muscle is responsible for the contraction of the heart, allowing it to pump blood throughout the body. Its unique properties, such as branching fibers and intercalated discs, allow for synchronized contractions, ensuring efficient blood circulation.
| 4. How are muscle contractions regulated? | |
Ans. Muscle contractions are regulated by the interaction between actin and myosin filaments. When a muscle receives a signal from the nervous system, calcium ions are released, allowing the actin and myosin filaments to slide past each other, resulting in muscle contraction. The amount of calcium ions and the frequency of nerve impulses determine the strength and duration of the contraction.
| 5. Can muscular tissue regenerate? | |
Ans. While skeletal muscle has some regenerative capacity, smooth muscle and cardiac muscle have limited regenerative abilities. Skeletal muscle can regenerate to some extent through the activation of satellite cells, which can divide and differentiate into new muscle fibers. However, severe injuries or diseases may impair the regeneration process. Smooth muscle and cardiac muscle have a limited ability to regenerate, mainly by hypertrophy (increasing the size of existing muscle cells) rather than the formation of new muscle cells.
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Nov 24, 2024 Last updated |
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