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प्रश्न
Compare and contrast.
Sympathetic Nervous System and Parasympathetic Nervous System
उत्तर
Sympathetic Nervous System and Parasympathetic Nervous System are parts of Autonomic Nervous System. Sympathetic nervous system prepares our body to face stressful and threatening situations. It prepares us for a 'flight or fight' reaction. For example, if you are chased by a dog, your heartbeat and breathing rate increases and you start sweating. Parasympathetic Nervous System takes over when the situation becomes normal. When this system takes over, your heart rate, palpitation and sweating becomes normal. We regain our composed state. It directs our body to store energy for emergencies.
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संबंधित प्रश्न
Write whether the following is true or false:
Neurotransmitters are released on activation.
How does an impulse travel across a synapse?
During synaptic transmission of nerve impulse, neurotransmitter (P) is released from synaptic vesicles by the action of ions (Q). Choose the correct P and Q.
The action potential occurs in response to a threshold stimulus; but not at sub-threshold stimuli. What is the name of the principle involved?
______ is the longest cell in our body.
Axons ____________.
What are the different parts of the multipolar neuron?
Electrical impulse travels in a neuron from
Which of the following structures is absent in nerve cells?
Distinguish between the following pair:
Nerve impulse and flow of electricity (transmission and speed)
