Question

Discribe the structure of neuron with neat labelled diagram.explain how the nerve impulse is transmitted across a synapses

Answer 1

I can not describe_______

Answer 2

Neurons are nerve cells which are the functional components of the nervous system. Neurons are authoritative cells of the nervous system that transfer signals throughout the body. You may already aware of many different things that neurons can do from sensing external and internal stimuli, to processing information and directing muscle actions too. The most distinctive and chief structures of a neuron are the long extensions that widen out from the cell body.  

There are three types of neurons.

1. The first is the sensory neurons,  
2. The second is the motor neuron, and  
3. The third is the central neuron. The third type is often called the association or correlation neurons.  

The three main components of a neuron are dendrite, cell body and axon.

1. Dendrite: It detects info and conducts the messages towards the cell body.
2. Cell body: It contains nucleus, mitochondria, and alternative cell organelles. It maintains the expansion of the cell.
3. Axon: It conducts messages off from the cell body and pass to consecutive cell.

Mechanism of how the nerve impulse is transmitted across a synapses

• At the point when drive comes to the pre-synaptic handle, it depolarized the presynaptic layer and causes the hole of voltage gated metal channel.  
• Dissemination of Ca++ molecule inside the presynaptic handle makes development of colligation blister the surface of the handle. Colligation growth conveys the neurochemical.  
• Synaptic vesicles at that point joined with the presynaptic layer and discover crack to release its substance i.e. Neurochemical (Acetylcholine) into colligation split.  
• Synaptic vesicles at that point go to the cellular material of pre-synaptic handle for reestablishment.  
• A portion of the released neurochemical ties with the macromolecule receptor blessing on the post colligation film of another substantial cell and adjust the layer potential.  
• Other unbound neurochemical straightforwardly stray from the colligation split.  
• The difference in the post colligation layer opens the metal channel dispensing inflow of Na+ molecule. Consequently exacting change and create motivation. Amid this technique, the motivation gets transmitted to next substantial cell on the colligation.