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What are myelinated and unmyelinated nerve fibres?

Important Questions on Human Physiology-1

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Biology>Physiology>Human Physiology-1>Neurons and Synapses
During synaptic transmission of nerve impulses, the neurotransmitter(P) is released from synaptic vesicles by the action of ions(Q). Choose the correct P and Q .
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Biology>Physiology>Human Physiology-1>Neurons and Synapses
Potential difference across resting membrane is negative. This is due to differential distribution of the following ions
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Biology>Physiology>Human Physiology-1>Neurons and Synapses

Fill in the blank with the correct option provided in the bracket.

The myelin sheaths around the nerve fibres in the central nervous system are formed by _____(Schwann/oligodendrocytes/astrocytes) cells.

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Biology>Physiology>Human Physiology-1>Neurons and Synapses
During synaptic transmission of nerve impulses, a neurotransmitter (P) is released from the synaptic vesicle by the actions of ions (Q). Choose P and Q.
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Biology>Physiology>Human Physiology-1>Neurons and Synapses
Myelin sheath in medullary neurons is
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Biology>Physiology>Human Physiology-1>Neurons and Synapses
Chemicals which are released at the synaptic junction are called
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Biology>Physiology>Human Physiology-1>Neurons and Synapses
Potential difference across resting membrane is negatively charged. This is due to differential distribution of the following ions
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Biology>Physiology>Human Physiology-1>Neurons and Synapses
The common neurotransmitter substance of the parasympathetic nervous system is known as _____. (Write the full name)
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Biology>Physiology>Human Physiology-1>Neurons and Synapses
The chemical substance released by parasympathetic nervous system is 
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Biology>Physiology>Human Physiology-1>Neurons and Synapses

Fill in the blank with the correct option provided in the bracket.

The axons of some neurons are encapsulated by an insulating lipid material, known as _____(myelin/ptyalin/cholesterol).

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Biology>Physiology>Human Physiology-1>Neurons and Synapses
Chemical transmission in synapse occurs due to
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Biology>Physiology>Human Physiology-1>Neurons and Synapses
Excitation of neurons occurs when the external stimuli changes their
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Biology>Physiology>Human Physiology-1>Neurons and Synapses
Which of the following neurotransmitters generate an excitatory potential at the neuromuscular junction?
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Biology>Physiology>Human Physiology-1>Neurons and Synapses
The insulating sheath covering the axon is called
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Biology>Physiology>Human Physiology-1>Neurons and Synapses

Fill in the blank with the correct option provided in the bracket.

The functional junction between two neurons is known as _____(synapse/node of Ranvier/axon hillock).

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Biology>Physiology>Human Physiology-1>Neurons and Synapses
Resting membrane potential is maintained by
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Biology>Physiology>Human Physiology-1>Neurons and Synapses
Impulses travel rapidly in _____ of neurons. (myelin sheath/ axon)
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Biology>Physiology>Human Physiology-1>Neurons and Synapses

Fill in the blank with the correct option provided in the bracket.

The junction between a neuron and an effector is known as _____(ganglion/synapse/desmosome).

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Biology>Physiology>Human Physiology-1>Neurons and Synapses
Nerve cell does not contain        
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Biology>Physiology>Human Physiology-1>Neurons and Synapses
All the statements regarding acetylcholine are true, except