Class 9 > CBSE Class 9 Biology(TISSUES)-Videos & documents by Letstute > Muscular Tissue - Tissues - Class 9 - Science
Muscular Tissue - Tissues - Class 9 - Science Video Lecture - CBSE Class 9 Biology(TISSUES)-Videos & documents by Letstute
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11 videos|7 docs
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FAQs on Muscular Tissue - Tissues - Class 9 - Science Video Lecture - CBSE Class 9 Biology(TISSUES)-Videos & documents by Letstute
| 1. What is muscular tissue? |  |
Ans. Muscular tissue is a type of tissue found in animals that is responsible for movement. It is made up of specialized cells called muscle fibers that contract and relax to produce force and motion.
| 2. What are the types of muscular tissue? | |
Ans. There are three types of muscular tissue: skeletal muscle, cardiac muscle, and smooth muscle. Skeletal muscle is attached to the bones and helps in voluntary movements. Cardiac muscle is found in the heart and is responsible for pumping blood. Smooth muscle is found in the walls of organs and blood vessels and helps with involuntary movements.
| 3. How does muscular tissue contract? | |
Ans. Muscular tissue contracts through a process called sliding filament theory. When a muscle receives a signal from the nervous system, it releases calcium ions, which bind to proteins in the muscle fibers. This causes the muscle fibers to slide past each other, shortening the length of the muscle and generating force.
| 4. What are the functions of muscular tissue? | |
Ans. Muscular tissue has several functions. It allows for voluntary movements of the body, such as walking and running, through the contraction and relaxation of skeletal muscles. It also helps in involuntary movements, such as the pumping of blood by the cardiac muscle. Additionally, muscular tissue helps in maintaining posture, generating heat, and protecting internal organs.
| 5. How can muscular tissue be damaged or injured? | |
Ans. Muscular tissue can be damaged or injured through various factors. Overuse or repetitive movements can lead to strains or sprains in skeletal muscles. Trauma or accidents can cause muscle tears or contusions. Inadequate warm-up or stretching before physical activity can increase the risk of muscle injuries. In some cases, diseases or conditions like muscular dystrophy can lead to degeneration of muscular tissue. Proper care, rest, and rehabilitation are important for the recovery of muscular tissue injuries.
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