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प्रश्न
Give function of astrocytes in nervous system.
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उत्तर
Astrocytes have varied roles in the brain, secretion and absorption of neural transmitter and maintenance of blood-brain barrier BBB. They also regulate the transmission of electrical impulses with the brain.
संबंधित प्रश्न
Dendrites transmit impulse ______ cell body and axon transmit impulse ______ cell body.
Neurotransmitters are removed from synaptic cleft by ____________ after transmission of impulse.
The axoplasm inside the axon contains high concentration of (i) ions and low concentration of _(ii)_ ions, during the resting state of the neuron.
Which of the following situations is responsible for resting membrane potential?
Identify the value of action potential.
Identify the correct path of transmission of nerve impulse.
Which of the following statements is TRUE for medullated nerve fibre?
Potential difference across resting membrane is negative. This is due to differential distribution of the following ions ______.
Complete the statement by choosing appropriate match among the following -
| a. Resting potential | i. Chemicals involved in the transmission of impulses at synapses. |
| b. Nerve impulse | ii. Gap between the pre synaptic and post synaptic neurons |
| c. Synaptic cleft | iii. Electrical potential difference across the resting neural membrane |
| d. Neurotransmitters | iv. An electrical wave like response of a neuron to a stimulation |
What is the difference between electrical transmission and chemical transmission?
