Question

define brain And its all parts

Answer 1

The cerebrum is the largest part of the brain and is composed of right and left hemispheres. It performs higher functions like interpreting touch, vision and hearing, as well as speech, reasoning, emotions, learning, and fine control of movement.

The cerebellum is located under the cerebrum. Its function is to coordinate muscle movements, maintain posture, and balance.

The brainstem includes the midbrain, pons, and medulla. It acts as a relay center connecting the cerebrum and cerebellum to the spinal cord. It performs many automatic functions such as breathing, heart rate, body temperature, wake and sleep cycles, digestion, sneezing, coughing, vomiting, and swallowing. Ten of the twelve cranial nerves originate in the brainstem.

The surface of the cerebrum has a folded appearance called the cortex. The cortex contains about 70% of the 100 billion nerve cells. The nerve cell bodies color the cortex grey-brown giving it its name – gray matter . Beneath the cortex are long connecting fibers between neurons, called axons, which make up the white matter.

Answer 2

Answer:

The brain is one of the largest and most complex organs in the human body. It is made up of more than 100 billion nerves that communicate in trillions of connections called synapses.

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The brain has three main parts:

1. The cerebrum
2. Cerebellum
3. Brainstem.

The cerebellum  receives information from the sensory systems, the spinal cord, and other parts of the brain and then regulates motor movements. 

The cerebrum performs higher functions like interpreting touch, vision and hearing. It also works on our reasoning and mental work as well as emotions

The brainstem is the region of the brain that connects the cerebrum with the spinal cord. It relays signals between spinal cord and brain.