Photosensitive compound in human eye is made up of
opsin and Retinal
opsin ans Retinol
transducin and Retinene
transducin and Retinene
Which part of the human ear plays no role in hearing as such but is otherwise very much required?
Eustachian tube
Organ of corti
Vestibular apparatus
Vestibular apparatus
In mammalian eye, the 'fovea' is the center of the visual field, where
high density of cones occur, but has no rods.
the optic nerve leaves the eye.
only rods are present
only rods are present
Destruction of the anterior horn cells of the spinal cord would result in loss of
Sensory impulses
Voluntary motor impulses
Commissural impulses
Commissural impulses
How do parasympathetic neural signals affect the working of the heart?
Reduce both heart rate and cardiac output
heart rate is increased without affecting the cardiac output
Both heart rate and cardiac output increase
Both heart rate and cardiac output increase
A diagram showing axon terminal and synapse is given. Identify correctly at least two of A-D.
|
A – Receptor |
C – Synaptic vesicles |
|
B – Synaptic connection |
D- K+ |
|
A – Neurotransmitter |
B- Synaptic cleft |
|
A – Neurotransmitter |
B- Synaptic cleft |
The human hind brain comprises three parts, one of which is
spinal cord
corpus callosum
Cerebellum
Cerebellum
Injury localised to the hypothalamus would most likely disrupt
short term memory
coordination during locomotion
executive function, such as decision making
executive function, such as decision making
Parts A, B, C and D of the human eyes are shown in the diagram. Select the option, which gives correct identification along with its functions/ characteristics
A - retina - contains photoreceptors -rods and cones
B-blind spot- has only a few rods and cones
C - aqueous chamber - reflects the light which does not pass through the lens
C - aqueous chamber - reflects the light which does not pass through the lens
