In a demyelinating disease like multiple sclerosis, which characteristic of nerve impulse conduction is MOST directly affected?
Resting membrane potential
Threshold potential
Conduction velocity
Neurotransmitter release
Related Questions
Which one of the following pairs of structures distinguishes a nerve cell from other types of cell?
Perikaryon and dendrites
Vacuoles and fibres
Flagellum and medullary sheath
Nucleus and mitochondria
Which of the following components are the primary constituents of Nissl granules in nerve cells?
Lysosomes and peroxisomes
Rough endoplasmic reticulum and ribosomes
Golgi apparatus and mitochondria
Microtubules and microfilaments
Lipofucsin granules are found in
Nerve cell
Cardiac muscle
Red muscle
Cartilage
The …… nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon
Myelinated
Non-myelinatd
Afferent
Efferent
Myelin sheath is derived from
Neuroglial cells
Schwann cells
Nerve cells
All of these
The absolute refractory period of a neuron is primarily caused by:
Delayed closing of potassium channels
Inactivation of voltage-gated sodium channels
Hyperpolarization of the membrane
Depletion of neurotransmitter vesicles
Nissl’s granules are found in all except
Cyton
Dendrites
Axon
Cell body
Which of the following parts of a neuron is covered by fatty sheath?
Axon
Cyton
Dendrite
Node of Ranvier
Unipolar neurons can be seen in the
Embryonic stage
Cerebellum
Cerebral cortex
Retina of eye
The abundance of Nissl bodies in a neuron suggests a high rate of which cellular process?
Lipid metabolism
Carbohydrate breakdown
Protein synthesis
ATP production
