The brain is one of the essential organs in the human body. Its complexities are varied, making it a wonder among medical professionals and ordinary folk.
The brain is considered to be the nerve centre of the body because it controls most of the activities the body can do. It is a mass of nerves as well as support tissues that connect to other major organs in the body.
Some of these activities are as simple as blinking, walking, talking and hearing, eating, and even breathing. When the brain is connected to organs such as the spinal cord and different nerves, it is referred to as the central nervous system.
Structure of a human brain
The complexities of the human brain have been fascinating for medical professionals that have been interacting with it for decades. Discoveries concerning its structure have been mind-boggling and led to many breakthroughs in the medical world.
Although the parts of the brain are many, some form its primary anatomy while others are seen to serve supportive roles. It is common to see these areas highlighted in a brain model labeled used in educational institutions. Here are some of the significant parts of the organ you need to know and what they do.
The part of the brain that is seen when looking at its outermost portion is the cerebral cortex. It is responsible for the many functions that make each human being unique.
Some of the different traits observed in humans such as consciousness, reasoning, higher thought and language come from that part of the brain. Also, it comprises of four lobes that control different functions in the body. These lobes include frontal, temporal, parietal and occipital lobe.
· The Frontal lobeis located in the anterior part of the brain and does many things such as reasoning, expressive language and high-level intellect. The lobe also has a motor cortex at the back which is responsible for receiving and utilizing information from other sections of the brain. Information from different lobes is then used to direct body movements.
· The Temporal lobe is at the bottom part of the brain and is host to the auditory cortex and hippocampus. The auditory cortex is responsible for the understanding of languages and sounds that we interact with daily. On the other hand, the hippocampus is responsible for memories, how they are formed and kept in that part of the brain.
· The Parietal lobe is at the middle of the brain and is associated with the processing of pain, touch and pressure. The part of the brain also has the somatosensory cortex that is responsible for the processing of various body senses.
· The Occipital lobeis found on the back part of the brain is tasked with interpretation of visual information and stimuli. The section of the brain also hosts the central visual cortex responsible for receiving information from the eyes and interpreting it appropriately.
When it comes to the functions that they control, these lobes or sections operate individually as well as collectively to ensure the body works well.
The cerebellum is an integral part of the brain and is located at the back of the head, near the brain stem. In terms of size, this part of the brain occupies ten percent of the entire organ and is home to at least fifty percent of its neurons. It also comprises of tiny lobes that receive information from different systems in the body.
These systems include visual, auditory, sensory and the inner year. Some of the main functions of the body associated with the cerebellum include controlling of balance, posture and voluntary movement coordination. When the cerebellum is working well, it results in muscle groups working together, resulting in fluid movement. Additionally, this part of the brain plays a role in various cognitive functions such as speech.
The stem of the brain is the primary connection between the spinal code and cerebrum. It is found at the bottom part of the organ and is made up of the medulla, midbrain and pons.
· The Medulla is found on the top part of the spinal cord near the lowest part of the stem within the brain. It controls different functions of the body, which are vital such as blood pressure, heart rate and breathing.
· The Midbrain works as a relay station in the brain and is considered its smallest region. It controls various functions of the brain like eye movement, visual as well as auditory information. The substansia nigra and red nucleus are the parts of the brain that controls movements of the body. Dopamine producing neurons are found in the substansia nigra, which is darkly pigmented.
· The Pons primarily connects the cerebrum, medulla and cerebral cortex. They play important roles in the body that are often considered automatic. These roles include control of sleep cycles and breathing which are essential to the functioning of the body.
4. Thalamus and hypothalamus
The Thalamus and hypothalamus parts are essential for the proper functioning of the brain and the entire body. They are located on the brain stem and the bottom of the brain, respectively while performing various functions.
The thalamus is tasked with the duty of collecting sensory information and transferring it to the cerebral cortex, which then responds appropriately. The response sent back to the thalamus is relayed to other body systems.
On the other hand, the hypothalamus which is next to the pituitary gland also has its unique functions in the body. These functions include controlling circadian rhythms, hunger, body temperature, thirst and emotions. It also controls the functioning of the pituitary gland, which involves secreting of essential hormones in the body.
In general, the brain is a critical organ in the body, and all its parts should be protected at all costs. It is crucial to understand how it works for personal or educational reasons to treat it well and prevent it from getting damaged in any way.