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Related Practice Questions :

Most sensory receptors function by producing depolarising potentials. Which of the following function by hyperpolarization rather than depolarization ?

1. proprioceptors
2. nociceptors
3. olfactory receptors
4. rods and cones

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NEET 2023 - Target Batch - Aryan Raj Singh
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In a chemical synapse, when an impulse arrives at the axon terminal, it:
1. leads to opening of the calcium channels at the post synaptic membrane
2. Stimulates the movement of synpatic vesicles towards the membrane 
3. causes the binding of the neurotransmitter of its receptors on the post synaptic neuron 
4. activates the opening the potassium channels in the axon terminal 

To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
Please attempt this question first.

When a neuron is an resting state, ie, not conducting any impulse, the axonal membrane

is

1. equally permeable to both Na+ and K+ ions

2. impermeable to both Na+ and K+ ions

3. comparatively more permeable to K+ ions and nearly impermeable to Na+ ions

4. comparatively more permeable to Na+ ions and nearly impermeable to K+ ions

To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
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During the propagation of a nerve impulse, the action potential results from the movement of

1. K+ ions from extracelular fluid to intracellular fluid

2. Na+ ions from intracellular fluid to extracellular fluid

3. K+ ions from intracellular fluid to extracellular fluid

4. Na+ ions from extracellular fluid to intracellular fluid

To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
Please attempt this question first.

Neurons are excitable cells because

(1) Their membranes are in unpolarized state

(2) There membranes are very light to create channels

(3) They have got neurotransmitters

(4) Their membranes are in polarized state

To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
Please attempt this question first.