In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed would drive
K+ into the cell
K+ and Na out of the cell
Na+ into the cell
Na+ out of the cell
Bowman’s glands are found in
juxtamedullary nephrons
olfactory epithelium
external auditory canal
cortical nephrons only
Which one of the following is the example of the action of the autonomous nervous system ?
swallowing of food
pupillary reflex
peristalsis of the intestine
knee-jerk response
Depolarization of axolema during nerve conduction takes place because of
equal amount of Na+ and K+ move out across axolema
Na+ move inside and K+ move more outside
more Na+ outside
none of the above
Parkinson’s disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter
acetylcholine
norepinephrine
dopamine
GABA
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
