Zoology - Neural Control and Coordination Question with Solution | TestHub
ZoologyNeural Control and CoordinationNerve ImpulseEasy2 minPYQ_2020
ZoologyEasysingle choice
What is correct about the axolemma before acquiring the stage of depolarization?
Options:
Answer:
B
Solution:
Resting state of neuron
- High concentration of K+ and negatively charged proteins and low concentration of Na+ in axoplasm.
- In contrast, the fluid outside the axon contains a low concentration of K+, a high concentration of Na+ and thus form a concentration gradient.
- These ionic gradients across the resting membrane are maintained by the Na-K pump which actively transports 3Na+ outwards for 2K+ into the cell.
- Outer surface of sarcolemma : Positively charged.
Inner surface : Negatively charged.
- Membrane is polarised.
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Neural Control and CoordinationSubtopic:Nerve Impulse
⏱ 2mℹ️ Source: PYQ_2020
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