Mammillary bodies are present in (1) thalamus (2) epithalamus (3) hypothalamus (4) midbrain Location of Mammillary Bodies Mammillary bodies are situated on the undersurface of the brain, at the ends […]
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CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
What Are Mirror Neurons? Understanding Their Role in Action and Empathy
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Identification of Catecholamine-Containing Synaptic Vesicles by Electron Microscopy
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
How Long Do Synaptic Vesicles Take to Travel from Motor Neuron Soma to Neuromuscular Junction by Fast Axonal Transport?
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Synapsin is the Key Protein Tethering Synaptic Vesicles to Cytoskeletal Proteins in Presynaptic Terminals
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Synapsin: The Key Protein Anchoring Synaptic Vesicles to Cytoskeletal Proteins in Presynaptic Terminals
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Sequential Activation of SNARE Complex Components in Neurotransmitter Release: Role of Synaptobrevin, Syntaxin, and SNAP-25
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Why Nerve Impulses Propagate Unidirectionally in the Nervous System
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Explanations for Increased Conduction Velocity in Myelinated Nerve Fibers Compared to Non-Myelinated Fibers of the Same Diameter
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: […]
CSIR NET Life Science Previous Year Questions and Solution on Animal Physiology
Explaining Faster Conduction Velocity in Myelinated Nerve Fibers Compared to Unmyelinated Fibers
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 […]
