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Audio Notes: Neural Control and Coordination
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FAQs on Audio Notes: Neural Control and Coordination
| 1. What are the main functions of the nervous system? |  |
Ans. The nervous system primarily functions to control and coordinate body activities. It receives sensory input, processes information, and generates responses. Additionally, it is responsible for regulating bodily functions, maintaining homeostasis, and facilitating communication between different body parts.
| 2. What is the difference between the central nervous system and the peripheral nervous system? | |
Ans. The central nervous system (CNS) comprises the brain and spinal cord, serving as the main control centre for processing information. In contrast, the peripheral nervous system (PNS) consists of all the nerves outside the CNS, connecting the CNS to limbs and organs, thereby facilitating communication between the CNS and the rest of the body.
| 3. How do neurons transmit signals? | |
Ans. Neurons transmit signals through a process involving electrical impulses known as action potentials. When a neuron is stimulated, it depolarises, causing sodium ions to enter the cell. This change in voltage travels along the axon to the synapse, where neurotransmitters are released to transmit the signal to the next neuron or target cell.
| 4. What role do neurotransmitters play in neural communication? | |
Ans. Neurotransmitters are chemical messengers that transmit signals across synapses from one neuron to another or to target cells. They bind to specific receptors on the post-synaptic neuron, leading to the continuation or inhibition of the nerve impulse, thus playing a crucial role in the functioning of the nervous system.
| 5. What is the significance of reflex actions? | |
Ans. Reflex actions are automatic, rapid responses to stimuli that occur without conscious thought. They play a vital role in protecting the body from harm by enabling quick reactions to potentially dangerous situations, such as pulling away from a hot surface, thus serving as a critical mechanism for survival.
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Apr 19, 2026 Last updated
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