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प्रश्न
The action potential occurs in response to a threshold stimulus; but not at sub-threshold stimuli. What is the name of the principle involved?
उत्तर
However, an unusual event occurs when the magnitude of the depolarization reaches a level of membrane potential called the threshold.
संबंधित प्रश्न
Draw a labelled diagram of the following:
Neuron
The number of Spinal nerves in a human being are :
(A) 31 pairs
(B) 10 pairs
(C) 21 pairs
(D) 30 pairs
With the help of a suitable diagram describe the structures of a neuron.
Define the term Motor neuron.
Define the term Neuron.
Differentiate between following pair with reference to the aspect in bracket.
Sensory nerve and motor nerve (direction of impulse carried)
Answer the following questions briefly:
How are the cytons and axons placed in the brain and the spinal cord?
How does an impulse travel across a synapse?
______ is the longest cell in our body.
As compare to medullated nerves, the conduction of impulse by non-medullated nerve fibres is ______ times faster.
Which cells form a single layer of squamous or columnar often ciliated epithelial cells lining the ventricle?
Electrical impulse travels in a neuron from
In a neuron, conversion of electrical signal to a chemical signal occurs at/in
CNS is mostly made of ______
Any factor that can bring a change in the body of an organism is called ______.
Name the following:
Three main parts of the neuron
Distinguish between the following pair:
Nerve impulse and flow of electricity (transmission and speed)
