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in electrical synapse, impulse from pre...

in electrical synapse, impulse from presynaptic membrane reaches post-synaptic membrane through

A

Neurotransmitter released in synapticc cleft

B

Through gap junctions present between two synaptic membranes

C

Electrons that jump directly from presynaptic membrane to post-synaptic membrane

D

Opening of `K^+` channels in post -synaptic membrane

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An electrical synapse differs from a chemical synapse in that the electrical synapse :

Read the given statements and select the correct ones. (i)Autonomic neural system transmits impulses from the CNS to the voluntary organs and striated muscles of the body. (ii)Unmyelinated nerve fibres do not have Schwann cells which form the myelin sheath. (iii)Axonal membrane of a neuron while not conducting any impulse is comparatively more permeable to potassium ions (K^+) than to sodium ions (Na^+) (iv)A synapse is formed by the membranes of presynaptic neuron and a post synaptic neuron.

Do you know how the pre-synaptic neuron transmits an impulse (action potential) across the synaptic cleft to the post-synaptic neuron?

[A] : In mammals, ends of presynaptic fibres are enlarged to form synaptic Knobs which are separated by a synaptic cleft from postsynaptic neurons. Each synaptic knob contains many mitochondria and small gran- ule-Iike synaptic vesicles filled with minute packets of the chemical that transmits im- pulses to postsynaptic neurons. [R]: The chemical transmitters are called neurohumors which proportionate to K^+ in- flux.

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Plasma membrane is derived from

Read the following statements: A. Dura mater is the outer layer of the cranial meninges. B. Electrical synapses are rare in the human body . C. The tectorial membrane is found in the middle ear. How many statements are incorrect?

AAKASH INSTITUTE ENGLISH-TEST 6-EXAMPLE
  1. select the correct match

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  2. Which of the following structure does not participate in hearing?

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  3. in electrical synapse, impulse from presynaptic membrane reaches post...

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  4. Read the following statements Statement-A: Muscle fibres exhibit spec...

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  5. A type of neuron with one axon and one dendrite is found in the human ...

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  6. In relation with movement and locomotion, which of the following state...

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  7. Cortisol can perform all the following functions except

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  8. Opening of which of the following type of channels is responsible for ...

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  9. Choose the incorrect statement w. r. t. thymus gland.

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  10. Select the mismatch.

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  11. Muscularis externa of alimentary canal is characterised by

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  12. Match Column A with Column B and select correct choice in the followin...

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  13. Scapula is a large triangular flat bone, situated in the A part of the...

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  14. Select the Mismatch.

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  15. Select the correct match w.r.t same number of bones.

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  16. Select the correct option with hormones which are poured into veins.

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  17. Hypothalamus contains a number of centres and control all of the foll...

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  18. Pyorrhea is related to

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  19. Read the following sentences carefully and select the correct option w...

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  20. Select the odd one w.r.t cranial bone

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