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प्रश्न
Compare and contrast.
Sympathetic Nervous System and Parasympathetic Nervous System
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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
Differentiate between Myelinated and non-myelinated axons.
Differentiate between Dendrites and axons.
Marine fish when placed in tap water bursts because of:
A. Endosmosis
B. Exosmosis
C. Diffusion
D. Plasmolysis
Briefly explain the following terms: Synapse
Mention the exact location of Hydathodes
Differentiate between the following pair of terms:
Receptor and effector.
Define the term Motor neuron.
Define the term Neuron.
Given below is a structure, write its special functional activity.
Myelin sheath and ……………
Rearrange the following in correct sequence pertaining to what is given within brackets at the end.
Effector - Sensory neuron - Receptor - Motor neuron - Stimulus - Central nervous system Response (Reflex arc)
Identify the ODD term in each set and name the CATEGORY to which the remaining three belong :
Axon, Dendron, Photon, Cyton
Answer the following questions briefly:
How are the cytons and axons placed in the brain and the spinal cord?
Name the following:
The nerve which carry impulse from CNS to muscles.
Name the following:
Structural and metabolic unit of nervous tissue.
Explain the following term :
Association neuron
____________ are the building blocks of the nervous system.
Which of the following statements is wrong regarding conduction of nerve impulse?
Bipolar neurons are found in ______
Nerve cells do not possess ______
______ is the longest cell in our body.
A neuron contains all cell organelles except ______.
The structural and functional units of the nervous system is ______.
What are the different parts of the multipolar neuron?
Assertion: Impulse travels from dendrite to cell body and then along the axon to its end.
Reason: Information acquired at the end of the dendrite tip of a nerve cell sets of an electric impulse.
In a neuron, conversion of electrical signal to a chemical signal occurs at/in
CNS is mostly made of ______
In the following diagram choose the correct labelling for A, B, C, D and E respectively.
Identify the parts of a neuron which help the nerve impulse to travel away from the cell body.
Write one word for the following:
The kind of nerve carrying impulses from the brain to a gland or muscle.
The basic structural and functional unit of brain is ______.
Nissl's granules are found in the cytoplasm of ______.
Name the following:
Three types of neurons
Name the following:
Three types of nerves.
Name the following:
Three main parts of the neuron
Define the following term:
Synaptic cleft
