Destruction of the anterior horn cells of the spinal cord would result in loss of
Sensory impulses
Voluntary motor impulses
Commissural impulses
Commissural impulses
B.
Voluntary motor impulses
Destruction of the anterior horn cells of the spinal cord would result in loss of voluntary motor impulses. It is because the anterior horn cells (also called anterior grey column), which is the front column of grey matter in the spinal cord contains motor neurons that affect the axial muscles.
Photosensitive compound in human eye is made up of
opsin and Retinal
opsin ans Retinol
transducin and Retinene
transducin and Retinene
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 |
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
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
The human hind brain comprises three parts, one of which is
spinal cord
corpus callosum
Cerebellum
Cerebellum
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
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
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
