Osteocytes
Malpighian layer of the skin
Liver cells
Neurons
Neurons have the lowest likelihood of being replaced by new cells. Neurons, which are specialized nerve cells, generally lack significant regenerative capabilities, especially in most areas of the adult human brain and spinal cord. In contrast:
In summary, neurons are the least likely to be replaced by new cells, while the other cell types mentioned exhibit varying degrees of replacement and regeneration mechanisms.
∴The correct option is (D): Neurons.
Choose the correct option:
Statement I: Synaptic transmission occurs from presynaptic to postsynaptic neuron.
Statement II: Presynaptic membrane contains receptors for neurotransmitters.
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :
Predict the major product $ P $ in the following sequence of reactions:
(i) HBr, benzoyl peroxide
(ii) KCN
(iii) Na(Hg), $C_{2}H_{5}OH$
AB is a part of an electrical circuit (see figure). The potential difference \(V_A - V_B\), at the instant when current \(i = 2\) A and is increasing at a rate of 1 amp/second is:
The human nervous system is responsible for controlling and coordinating all the activities of the human body.
The Central Nervous System (CNS) comprises the brain and spinal cord.
The Peripheral Nervous System (PNS) comprises sensory/motor neurons and ganglion.