Tag: CSIR NET Life Science Previous Year Questions and Solution on Nervous system

A neuron that fires when an individual is eating by hand, also fires when he sees someone else eating with hand. Such neurons are called (1) mirror neurons. (2) mimicry […]

Which one of the following synaptic vesicles (as observed under transmission electron microscope) contains catecholamines? (1) Small, round shaped and clear (2) Small, round shaped and dense core (3) Large […]

The time taken by synaptic vesicles to travel from the soma of a motor neuron in the spinal cord to its neuromuscular junction in a person’s foot by fast axon […]

28. Which one of the following synaptic vesicle proteins is involved in tethering of the vesicle to the cytoskeletal system in the nerve terminus? (1) Synaptotagmin                                             (2) Synapsin (3) Synaptophysin                                              […]

Which one of the following is required to anchor the synaptic vesicles to the cytoskeletal proteins in the pre- synaptic nerve terminals? (1) Syntaxin (2) Synaptobrevin (3) Synaptotagmin (4) Synapsin […]

SNARE complexes are important for guiding synaptic transmission and Ca2+ binding is essential for activation of neurotransmitter release from the pre-synaptic terminal. In lieu of the above, identify the components […]

25. Unidirectional propagation of electrical signal in nervous system is (1) proportional to the length of axon. (2) due to chemical synapse. (3) due to electrical synapse. (4) proportional to […]

The explanations or increased conduction velocity of action potentials in a myelinated nerve fibre (MNF) as compared to that of a non-myelinated fibre (NNF) of same diameter are suggested below: […]

The conduction velocity of action potential in a myelinated nerve fibre was much greater than that of an unmyelinated fibre of the same diameter. The following statements were proposed to […]

An experimentalist stimulates a nerve fibre in the middle of an axon and records the following observations. Which one of the observation is correct? (1) Nerve impulse is travelling in […]