Advertisements
Advertisements
प्रश्न
Which of the following statements about transmission of nerve impulse is incorrect?
पर्याय
Nerve impulse travels from dendritic end towards axonal end
At the dendritic end electrical impulses bring about the release of some chemicals which generate an electrical impulse at the axonal end of another neuron
The chemicals released from the axonal end of one neuron cross the synapse and generate a similar electrical impulse in a dendrite of another neuron
A neuron transmits electrical impulses not only to another neuron but also to muscle and gland cells
Advertisements
उत्तर
At the dendritic end electrical impulses bring about the release of some chemicals which generate an electrical impulse at the axonal end of another neuron
Explanation -
Axonal end contains vesicle filled with a chemical called "neurotransmitter" which cross the gap or synapse and generate electrical impulse at the dendrite of another neuron.
APPEARS IN
संबंधित प्रश्न
Fill in the blank:
The neurons carrying impulses from the brain to the muscles are called _______________________.
Rearrange the following in correct sequence pertaining to what is given within brackets at the end.
Repolarisation - Depolarisation - Resting (polarised) (during conduction of nerve impulse through a nerve fibre)
Rearrange the following in correct sequence pertaining to what is given within brackets at the end.
axon endings → nucleus → Dendrites → axon → perikaryon → Dendron(Neutron structure)
What are the advantages of having a nervous system?
How does an impulse travel across a synapse?
____________ are the building blocks of the nervous system.
Identify the odd item from the following series of words.
When the potential across the axon membrane is more negative than the normal resting potential, the neuron is said to be in a state of ______.
Dendrons are the longest fibres that conduct impulses away from the cell body.
Axons ____________.
Which type of neuroglial cells are depicted in the given diagram?
Which cells form a single layer of squamous or columnar often ciliated epithelial cells lining the ventricle?
Select the motor nerves from the following group.
The longest fibre on the cell body of a neuron is called ____________.
In a synapse, the chemical signal is transmitted from ______.
Explain the function of the neuron.
The mammalian nervous system uses both electrical and chemical means to send signal via neurons. Which part of the neuron receives impulses?
Name the following:
Three main parts of the neuron
