Human Brain

An amazing masterpiece, a three-pound organ, and the most complex part of the body is the brain. The brain controls all body functions. This interprets information, initiates body movement, and controls our behaviour, creativity, and emotions. It’s protected by the skull. Somewhere the brain defines our humanity. Three major part comprises the brain, including the cerebrum, cerebellum, and brainstem.

The five senses provide information to the human brain. These include smell, sight, touch, hearing, and taste. Read on to get some basic knowledge of the brain, its structure of the brain and know all the questions related to areas of the brain. 

Human brain

The brain may be a complicated organ that controls memory, thought, hunger, temperature, breathing, vision, touch, motor skills, emotions, etc., and each method regulates our body. Together, the areas of the brain and medulla spinalis, which extends from it, compose the CNS (central nervous system). The human brain has three main parts.

• Cerebrum
• Cerebellum
• brainstem

Composition of the human brain

• Weighing around three pounds within the total structure of brain average adult, around 60% of the brain is fat. 
• 40% of the remaining areas of the brain may be a combination of salt, protein, water, and carbohydrates. 
• The brain isn’t a muscle. 
• It contains nerves and blood vessels, as well as glial cells and neurons.

How does the brain work?

The brain receives and sends some electrical and chemical signals throughout the body. Different signals manage different messages, and the human brain act accordingly. After receiving different signals, the brain works on them, and you feel tired, sad, anxious, happy, and more such emotions. Some messages are unbroken inside the brain, whereas others transfer through the spine and move across the body’s network of nerves to distant parts. The CNS depends on billions of neurons to perform these tasks.

Parts of brain

The brain is composed of three major parts.

• The cerebrum is the largest area of the brain and consists of the left and right hemispheres. It performs higher functions like hearing, vision, decoding bit, still as speech, movement, management, reasoning, learning, emotions.
• The cerebellum is found beneath the neural structure named cerebrum. It performs a balance, coordinates muscle movements, and maintains posture.
• Brainstem functions as a relay centre that connects the cerebellum and the cerebrum to the spinal cord. It performs several automatic functions like swallowing, vomiting, coughing, sneezing, digestion, sleep cycles, body temperatures, heart rates, breathing, and much more.  

Structure of brain 

The neural structure named cerebrum splits into two halves. These parts of the brain include the left and right hemispheres. A fibrous bundle joins them together. This bundle has been named corpus callosum. This tract transmits messages from one facet to the opposite. Every hemisphere controls the other facet of the body. If you suffer from a stroke on your right bodyside, your left portion might get paralysed and weak.

Every function of the hemisphere isn’t shared. Left controls writing, arithmetic, speech, and comprehension. At the same time, the right one controls musical skills, artistic side, spatial ability, creativity, and such related work. In around 92% of the population, the left hemisphere or the left portion is dominant in speaking and hand use. 

Brain lobes

The cerebral hemispheres divide the brain into lobes. Every area of the brain or hemisphere has four lobes.

• Frontal lobe

This works on the emotions, the behaviour of individuals, and their personality. Problem-solving attitude, planning, and judgment making. Giving a speech, writing, reading. Body movements, self-awareness, concentration, and intelligence. 

• Parietal lobe

This lobe works on words and interprets languages. Visual and spatial perception. This can easily interpret signals like hearing, vision, motor, memory, and sensory in the structure of the brain. A sense of pain, warmth, touch, and temperature comes from this. 

• Temporal lobe

This lobe provides memory. Helps in hearing and understanding languages. Organizing things and sequencing.

• Occipital lobe

This lobe interprets vision like movement, light, colour, etc. 

Every lobe could divide, once again, into areas that serve specific functions. It’s vital to grasp that every lobe of the brain doesn’t perform alone. There are complicated relationships between the lobes of the brain and between the left and right hemispheres.

Some of the conditions of the brain

• Stroke

During a stroke, oxygen and blood flow suddenly stop in an area of tissue of the brain. The main cause of stroke is bleeding in the brain or a blood clot.

• Headache

It’s a most common issue. Many types of headaches are seen. Some could be serious, but some can be cured with just a painkiller. 

Conclusion

Recent studies have viewed and proven the brain as incomprehensible. Due to different studies going on the brain, scientists have named the 1990 decade as the ‘brains decade’. Till now, you must have got all the information related to the brain and different areas of the brain. After reading this article, it’ll be easy for you to answer questions like how to keep your brain healthy and how does brain works? And much more. This article will help you with any competitive exams.