Question

Which part of the human brain is the most developed?

Answer 1

It is the bulk of the brain and is the centre of intellectual activities. There are three regions of the human brain: the forebrain, the midbrain, and the hindbrain. The forebrain is the anterior component of the brain. It comprises two different hemispheres split by fissure.

Complete answer: The cerebrum, which is located at the top of the brain, is the highly formed portion of the human brain. It consists of two hemispheres: the left hemisphere and the right. Via a dense tract of nerve fibres present at the base of this fissure, these two cerebral hemispheres interconnect with one another. The cerebral cortex, which has an irregular surface with several folds, is known as the outermost layer of the cerebrum. Each hemisphere is typically divided into four main lobes: the frontal lobe, parietal lobe, temporal lobe, and occipital lobe, which are named according to the skull bones that cover them. On this rough surface, ridges called gyri and fold called sulci.

The cerebrum consists of the ventricles through which the cerebrospinal fluid is produced and circulated. The cerebrum's functions: The cerebrum's frontal lobe contains thought, motor control, emotion, and language. For higher-level intellectual functioning, the prefrontal cortex is responsible.
The brain's motor system includes movement production and regulation. The motor cortex, which is the frontal bone region, assists in the movement of arms and legs and locomotion. The sensory cortex is found in various parts of the body, near the motor cortex responsible for the sensation. Hence, the cerebrum is the most developed part.

Note: The cerebellum is situated under the cerebrum, and interacts directly with the cerebral structures. It coordinates functions such as posture and balance and sends signals to regulate muscle movements as well. Certain brain abnormalities are congenital and related to genetic and chromosomal defects, such as Tay-Sachs disease.