Question

Which of the following is the largest cell in the human body?
A) Sensory nerve cell
B) Purkinje nerve cell
C) Kupffer liver cell
D) Astrocyte brain cell

Answer 1

A cell is the basic structural, functional, and biological unit of life. In mammals, major cell types include skin cells, muscle cells, blood cells, fibroblasts, stem cells, neurons etc.They are found in the cerebellum of the brain.

Complete answer:
Cells types are genetically identical but differ from each other in both appearance and function. Purkinje cells, or Purkinje neurons, are large neurons found in the cortex of the cerebellum of the brain and play a fundamental role in controlling motor movement. They are one of the largest neurons in the human brain.They are flask-like in shape and have a long single axon from which arises numerous branching dendrites.
Though they receive signals from thousands of cells, Purkinje cells are the only ones that emit signals from the cerebellar cortex of the cerebellum. They release a neurotransmitter called GABA (gamma- aminobutyric acid) that exerts inhibitory actions on some neurons and reduces the transmission of nerve impulses. This is how they regulate the motor movements. The loss or damage of Purkinje cells can cause certain neurological diseases. The loss of Purkinje cells are seen in children with autism and in people with Niemann-Pick disease type C, an inherited metabolic disorder.

Note: Ovum is the largest cell of the human body. Among the given options, purkinje neurons are the largest neuron cells.They can control the rate at which signals fire in the cerebellum to produce precise output from the nuclei neurons, resulting in motor coordination such as hand movement.