NEET Exam > NEET Videos > Biology Class 11 > Structure of Muscle, Locomotion and Movement
Structure of Muscle, Locomotion and Movement Video Lecture | Biology Class 11 - NEET
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FAQs on Structure of Muscle, Locomotion and Movement Video Lecture - Biology Class 11 - NEET
| 1. What is the structure of muscle? |  |
Ans. The structure of muscle consists of muscle fibers, connective tissue, blood vessels, and nerves. Muscle fibers are long cells that are bundled together to form muscle tissue. Connective tissue surrounds and supports the muscle fibers, while blood vessels supply oxygen and nutrients to the muscle. Nerves stimulate the muscle to contract and control its movement.
| 2. How does muscle contribute to locomotion and movement? | |
Ans. Muscles play a crucial role in locomotion and movement. When muscles contract, they generate force that allows the bones they are attached to move. This movement is coordinated by the nervous system, which sends signals to the muscles to contract or relax. Different muscles work together in a coordinated manner to produce smooth and controlled movements, enabling us to walk, run, lift objects, and perform various activities.
| 3. What are the types of muscle involved in locomotion and movement? | |
Ans. There are three types of muscle involved in locomotion and movement: skeletal muscle, smooth muscle, and cardiac muscle. Skeletal muscles are attached to bones and are responsible for voluntary movements. Smooth muscles are found in the walls of organs and blood vessels, contributing to involuntary movements like digestion and blood flow. Cardiac muscles are specific to the heart and allow it to contract and pump blood.
| 4. How do muscles generate movement? | |
Ans. Muscles generate movement through a process called muscle contraction. When stimulated by a nerve impulse, muscle fibers slide past each other, resulting in the shortening of the muscle. This shortening pulls on the bones attached to the muscle, causing them to move. The sliding of muscle fibers is facilitated by the interaction of proteins called actin and myosin. This process allows muscles to generate the force required for movement.
| 5. How does the nervous system control muscle movement? | |
Ans. The nervous system controls muscle movement through a complex network of signals. The brain sends signals via the spinal cord and peripheral nerves to the muscles, instructing them to contract or relax. These signals, known as motor signals, coordinate the timing and intensity of muscle contractions, allowing for precise movements. The nervous system also receives sensory feedback from the muscles, enabling adjustments in movement based on sensory information.
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Nov 24, 2024 Last updated |
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