Distinguish between (Any four):(a) Afferent n | vedclass

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(N/A) Afferent neurons and Efferent neuronsAfferent neuronsEfferent neuronsThey conduct impulses towards the central neural system.They conduct impuls

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(N/A) Afferent neurons and Efferent neurons

Afferent neurons	Efferent neurons
They conduct impulses towards the central neural system.	They conduct impulses away from the central neural system.
They provide stimulus and evoke senses.	They result in the response by the effectors.
They are sensory in nature.	They are motor in nature.
These take information from the receptors.	These take information to the effectors.

$(b)$ Impulse conduction in a myelinated nerve fibre and an unmyelinated nerve fibre

Impulse conduction in a myelinated nerve fibre	Impulse conduction in an unmyelinated nerve fibre
Depolarisation occurs only at the nodes of Ranvier.	Depolarisation occurs along the entire length of the nerve fibre.
Action potential jumps from one node of Ranvier to another (saltatory conduction).	Action potential travels continuously along the entire length.
Conduction is faster.	Conduction is slower.
Less energy is required.	More energy is required.

$(c)$ Aqueous humour and vitreous humour

Aqueous humour	Vitreous humour
It is a watery and transparent fluid.	It is a thick, jelly-like transparent fluid.
It is present between the lens and cornea.	It is present between the lens and retina.
It is continuously secreted and drained.	It is not replaced.
It provides nourishment to the lens and cornea.	It maintains the shape of the eyeball.

$(d)$ Blind spot and Yellow spot

Blind spot	Yellow spot (Macula lutea)
Point on the retina where the optic nerve exits.	Small area on the retina at the posterior pole.
Photoreceptor cells are absent.	Contains a high density of cones.
Insensitive to light.	Sensitive to bright light and color.
No image is formed.	Sharpest image is formed.

$(e)$ Cranial nerves and Spinal nerves

Cranial nerves	Spinal nerves
They originate from the brain.	They originate from the spinal cord.
There are $12$ pairs.	There are $31$ pairs.
Can be sensory, motor, or mixed.	They are all mixed in nature.

Distinguish between (Any four):
$(a)$ Afferent neurons and Efferent neurons
$(b)$ Impulse conduction in a myelinated nerve fibre and an unmyelinated nerve fibre
$(c)$ Aqueous humour and vitreous humour
$(d)$ Blind spot and Yellow spot
$(e)$ Cranial nerves and Spinal nerves

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Distinguish between (Any four):$(a)$ Afferent neurons and Efferent neurons$(b)$ Impulse conduction in a myelinated nerve fibre and an unmyelinated nerve fibre$(c)$ Aqueous humour and vitreous humour$(d)$ Blind spot and Yellow spot$(e)$ Cranial nerves and Spinal nerves