Question

All the voluntary actions of the body are coordinated by the cerebrum
(a) True
(b) False

Answer 1

Hint: The voluntary action of the body is coordinated by the largest part of the brain and uppermost region of the central nervous system.

Complete answer:
 All the voluntary actions of the body are indeed coordinated by the motor cortex in the frontal lobe of the cerebrum. The cerebrum is the main and largest part of the brain for thinking, learning, reasoning, intelligence, personality. The cerebrum is responsible for receiving information from the sense organs and gives sensation.
The cerebrum is associated with storing information and experience.
- The motor area is responsible for sending instructions to various types of muscles in the body to perform a different function.
- The cerebrum consists of the cortex of two cerebral hemispheres linked together by the corpus callosum, a bundle of neural fibres, and several subcortical structures.
- The cerebrum includes the hippocampus, basal ganglia, and olfactory bulb.
- The motor cortex in the frontal lobe of the cerebrum is an area located in the posterior precentral gyrus that controls all precision of voluntary action and thoughts, planning, and execution of voluntary action.
- The lobes of the cerebrum are divided into – frontal lobe, temporal lobe, occipital lobe, parietal lobe.
- A stroke or cerebrovascular accident is defined as loss of focal brain function lasting more than 24 hours due to either spontaneous haemorrhage into the brain or inadequate blood supply to the brain.
So, the correct answer is ‘true’.

Note:
- The cerebrum is also called a telencephalon.
- The cerebrum is known as the largest part of the brain and is very important.
- Damage to the motor area in the cerebrum can cause certain kinds of damage which can lead to motor neuron disease with the loss of muscular function and may later result in total paralysis.