Q. No.The gaps between two adjacent myelin sheath are called
(1) Nodes of Ranvier
(2) Axon terminal
(3) Synaptic knob
(4) Schwan cell
(1) Nodes of Ranvier
(2) Axon terminal
(3) Synaptic knob
(4) Schwan cell
In retina of eye which kind of axons are found?
(1) Multipolar
(2) Bipolar
(3) Unipolar
(4) Apolar
Unmyelinated nerve fibres are enclosed by
(1) Schwann cells
(2) Myelin sheath
(3) No shwann cells and myelin sheath
(4) Schwann cells but not myelin sheath
Unmyelinated nerve fibres are found in
(1) Autonomous
(2) Somatic Neural systems
(3) Both A and B
(4) CNS
Myelinated nerve fibres are found in
(1) Cranial nerves
(2) Spinal nerves
(3) Both A and B
(4) Not in CNS
Neurons are excitable cells because
(1) Their membranes are in unpolarized state
(2) There membranes are very light to create channels
(3) They have got neurotransmitters
(4) Their membranes are in polarized state
The membrane of neuron is polarized because
(1) Different kind of lipids are there over membrane
(2) Different kinds of ion channels are there in membrane
(3) These ion channels are selectively permeable to different ions
(4) Both B and C
When neuron is resting, which of the following is false with respect to that
(1) It is not conducting any impulse
(2) Axonal membrane is more permeable to potassium ions
(3) Axonal membrane won't allow any flow of sodium ions across it
(4) Membrane is impermeable to negatively charged proteins
Which of the following conditions are not true across resting membrane?
(1) Axoplasm has more number of Potassium ions
(2) Axoplasm has less number of sodium ions
(3) High Concentration of negatively charged proteins in fluid outside axoplasm
(4) Both B and C
Ionic gradients across the resting membrane are maintained by
(1) Active transport of ions
(2) RMP
(3) Impulse or stimulus
(4) Both A and B
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