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A synaptic cleft is
Option: 1
The space present inside the presynaptic neuron
Option: 2
The space present inside the postsynaptic neuron
Option: 3
The space separating the pre- and postsynaptic neuron
Option: 4
The space present inside the separating vesicles
Answers (1)
As we have learnt in the synapse:
- Synapse can be defined as a functional junction between parts of two different neurons.
- There is no anatomical continuity between two neurons involved in the formation of the synapse.
- At a synapse, the membrane of the first neuron is called the presynaptic membrane, and the membrane of the next neuron is called the postsynaptic membrane.
- The small gap between is the synaptic cleft.
- Transmission across a synapse is carried out by molecules called neurotransmitters, which are stored in synaptic vesicles in the axon terminals.
- Two main neurotransmitters in vertebrates nervous system are acetylcholine and noradrenaline.
- Neurons releasing acetylcholine are described as cholinergic neurons.
- Neurons releasing the adrenaline are described as adrenergic neurons.
Therefore, at a synapse, the membrane of the first neuron is called the presynaptic membrane, and the membrane of the next neuron is called the postsynaptic membrane. The small gap between is the synaptic cleft. Hence, the correct answer is option c.
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