During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric change?
first positive, then negative and continue to be negative
first negative, then positive and continue to be positive
first positive, then negative and again back to positive
first negative, then positive and again back to negative
Bowman’s glands are found in
juxtamedullary nephrons
olfactory epithelium
external auditory canal
cortical nephrons only
Which of the following statement is correct for node of Ranvier of nerve?
neurilemma is discontinuous
myelin sheath is discontinuous
both neurilemnia and myelin sheath are discontinuous
covered by myelin sheath
When we migrate from dark to light, we fail to see for sometime but after a time visibility becomes normal. It is example of
accomodation
adaptation
mutation
photoperiodism
One function of parasympathetic nervous system is
contraction of hair muscles
stimulation of sweat glands
acceleration of heart beat
constriction of pupil
In a man, abducens nerve is injured. Which one of the following functions will be affected?
movement of the eyeball
movement of the tongue
swallowing
movement of the neck
