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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
Give a brief account of Mechanism of synaptic transmission.
Explain the role of Na+ in the generation of action potential.
Sketch and label formation of typical spinal nerve.
Long answer question.
Explain the process of conduction of nerve impulses up to the development of action potential.
Dendrites transmit impulse ______ cell body and axon transmit impulse ______ cell body.
Match the Column - I with Column - II:
| Column I | Column II | ||
| i. | P - wave | p. | Depolarisation of ventricles |
| ii. | QRS complex | q. | Repolarisation of ventricles |
| iii. | T - wave | r. | Coronary ischemia |
| s. | Development of atria | ||
| t. | Repolarisation of atria |
Under which of the following conditions will the ionic gradients across the resting membrane be maintained?
When stimulus is applied to a membrane of neuron, it causes rapid influx of ____________.
Resting membrane potential is maintained by ______.
What is the difference between electrical transmission and chemical transmission?
