Ivan Pavlov performed experiments on
simple reflexes
conditional reflexes
cardiac reflexes
origin of life
In which animal nerve cell is present but brain is absent?
Sponge
Earthworm
Cockroach
Hydra
Cornea transplantation is outstandingly successful because
cornea is easy to preserve
cornea is not linked up with blood vascular and immune systems
the technique involved is very simple
cornea is easily available
Iris is part of
sclerotic
choroid/uvula
choroid and retina
sclerotic and choroid
Respiratory centre is situated in
cerebellum
medulla oblongata
hypothalamus
cerebrum
CNS is mostly made of
motor neurons and sensory neurons
sensory neurons and association neurons
association neurons
motor neurons and association neurons
Function of iris is to
move lens forward and backward
refract light rays
bring about movements of eye lids
alter the size of pupil
Acute vision is present in
vulture
shark
bat
frog
The sympathetic nerves, in mammals arise from
sacral nerves
cervical nerves
thoraco-lumbar nerves
III,VII,IX and X cranial nerves
Which of the following cranial nerves can regulate heart beat?
X
IX
VIII
VII
