I and II
II and III
I and III
III and IV
A. I and II
hypothalamus
crura cerebri
cerebrospinal sheath
meninges
diocoel (III Ventride)
metacoel (IV Ventride)
olfactocoel
optocoel
cerebellum
medulla
pons
diencephalon
the neuron
the dendron
the axon
both (b) and (c)
amplitude of action potentials in the neuron
amplitude and frequency of action potentials in a neuron
frequency of action potentials in a neuron
amplitude of resting and action potentials in a neuron
CNS
SA node
AV node.
Parasympathetic nervous system
contraction of hair muscles
contraction of pupil
stimulation of sweat glands
acceleration of heart beats
white matter of spinal cord
white matter of brain
grey matter of brain
grey matter of spinal cord
CNS
autonomic nervous system
peripheral nervous system
sympathetic nervous system
pia mater
dura mater
arachnoid
none of these
nerve fibres with myelinated sheath
nerve fibres without myelinated sheath
scattered areolar tissue
nerve fibres with blood vessels.
thinking and intelligence
memory and learning
speech articulation
all of these
trigeminal
facial
vagus
spinal accessory
cerebellum
cerebrum
medulla oblongata
none of these
Olfactory, trochlear, abducens
Trigeminal, facial, auditory
Vagus, facial, abducens
Abducens, trochlear, oculomotor
Amoeba
Earthworm
Cockroach
Hydra
auditory
optic
olfactory
glossopharyngeal
release of more adrenalin
release of more acetylcholine
exhaustion of neurotransmitter
none of these
carried by afferent and efferent branches
not carried by afferent and efferent branches
carried away and brought by efferent branches
brought by afferent and carried by efferent branches
inhibitory
stimulatory
both (a) and (b)
at times inhibitory and at times stimulatory
stimulating agent
brain
nerve fibre
synapses
saltatory conduction
speed of conduction
reflex actions
direction of propagation of impulses
spinal cord
hypothalamus
cerebellum
pituitary gland
optic
trigeminal
olfactory
abducen
hypothalamus
medulla oblongata
pons
cerebellum
I and II
II and III
I and III
III and IV
an impulse will continue to be conducted until the stimulus is removed
an impulse will be generated if the stimulus is of a particular strength, below which there won't be any response and increase above the minimal does not produce any enhanced effect
the brain receives the complete information or does not receive at all
none of these
optic
olfactory
auditory
abducens
aorta
sternum
trachea
vertebral column
acetylcholine
norepinephrine
noradrenaline
none of these