Class 10 Exam > Class 10 Videos > Crash Course: Class 10 > What Happens in Reflex Actions
What Happens in Reflex Actions Video Lecture | Crash Course: Class 10
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FAQs on What Happens in Reflex Actions Video Lecture - Crash Course: Class 10
| 1. What is a reflex action? |  |
Ans. A reflex action is an involuntary and immediate response to a stimulus. It occurs without conscious thought and helps protect our body from potential harm.
| 2. How does a reflex action work? | |
Ans. A reflex action involves a sensory receptor that detects a stimulus, such as touching a hot object. The sensory neuron then sends the information to the spinal cord, which acts as a relay center. The spinal cord immediately sends a signal through a motor neuron to the effector, such as a muscle, causing a rapid and automatic response.
| 3. What are some examples of reflex actions? | |
Ans. Examples of reflex actions include blinking when something comes close to our eyes, withdrawing a hand from a hot surface, sneezing when an irritant enters our nose, and the knee-jerk response when a doctor taps the knee with a hammer.
| 4. Are reflex actions the same for everyone? | |
Ans. Reflex actions are generally the same for everyone as they are innate and automatic. However, the speed and intensity of reflex actions may vary from person to person depending on factors such as age, health, and individual differences in nerve pathways.
| 5. Can reflex actions be modified or learned? | |
Ans. Reflex actions are mostly innate and cannot be consciously modified or learned. However, some reflexes can be conditioned or modified through repetitive training, such as in sports or martial arts. Additionally, certain reflexes may be suppressed or overridden temporarily through conscious effort, but they will still occur in a reflexive manner if the stimulus is strong enough.
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Nov 19, 2024 Last updated |
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