Neural Control & Synaptic Transmission — NEET Biology
📚 Practice ConceptBriefly describe the structure of the Brain 2. Compare the following: (a) Central neural system (CNS) and Peripheral neural system (PNS) (b) Resting potential and action potential 3. Explain the following processes: (a) Polarisation of the membrane of a nerve fibre (b) Depolarisation of the membrane of a nerve fibre (c) Transmission of a nerve impulse across a chemical synapse
Which of the following statements regarding synaptic transmission are NOT correct? S1: At electrical synapses, impulse transmission is always faster than across chemical synapses. S2: The synaptic cleft is a characteristic feature separating pre- and post-synaptic neurons in both electrical and chemical synapses. S3: Neurotransmitters are released from synaptic vesicles into the synaptic cleft upon arrival of an action potential at the axon terminal. S4: Binding of neurotransmitters to their specific receptors on the post-synaptic membrane always generates an excitatory potential. S5: Transmission of nerve impulses across electrical synapses is very similar to impulse conduction along a single axon. S6: Chemical integration through hormones is provided by the neural system.
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