Different sections of the human brain

A person can technically be alive after brain death, but they will never regain consciousness. To sustain life, doctors place the person on artificial life support to keep the heart and lungs working. The heart has a separate electrical system from the brain, which is why it still beats for a short while after brain activity stops.

Doctors will carry out many tests before reaching a diagnosis of brain death. Brain death is a traumatic experience for everyone involved. It can be particularly difficult to come to terms with the diagnosis, especially if a person can see their loved one breathing and showing signs of life. The brain is composed of three main structuresthe cerebrum, cerebellum, and brain stem.

The brain sends chemical and electrical signals throughout the body to regulate different biological functions and sense environmental changes. The brain communicates with the majority of the body through the spinal cord. To do this, it uses billions of nerve cells throughout the CNS. This part of the brain is responsible for many processes, including :.

The cerebrum is responsible for personality. If a person experiences trauma to the cerebrum, in particular the frontal lobe, their friends and family may notice changes in their demeanor, mood, and emotions. Learn more about the cerebrum here. The cerebral cortex covers the cerebrum and has many folds. The cerebral cortex has four lobes :. The cerebral cortex is made of grey matter, which is where the brain processes information.

It also has ridges gyri and folds sulci. The folds and ridges accommodated the rapid brain growth humans experienced over years of evolution. The right side of the cerebral cortex, or hemisphere, controls the left side of the body, and the left hemisphere controls the right side of the body. Each hemisphere communicates with the other through the corpus callosum, which is a bridge of white matter.

It regulates balance and learned movements, such as walking and fastening buttons, but it cannot initiate movement. Because the cerebellum is sensitive to alcohol, people will experience problems with balance and walking when they consume too much. Cortex is the outer surface of the cerebellum, and its parallel ridges are called the folia. Apart from this, the cerebellum has the cerebellar peduncles, cerebellar nuclei, anterior and posterior lobes.

The cerebellum consists of two hemispheres, the outer grey cortex and the inner white medulla. It is mainly responsible for coordinating and maintaining the body balance during walking, running, riding, swimming, and precision control of the voluntary movements. The main functions of the cerebellum include:. Explore: Differences between Cerebellum and Cerebrum.

The medulla oblongata is a small structure present in the lowest region of the brain. It plays a primary role in connecting the spinal cord, pons and the cerebral cortex. Also, it helps us in maintaining our posture and controlling our reflexes. The pons is the primary structure of the brain stem present between the midbrain and medulla oblongata.

It serves as a relay signals between the lower cerebellum, spinal cord, the midbrain, cerebrum and other higher parts of the brain.

Different sections of the human brain: › health-information › public-education

The main functions of the pons include:. Further Reading: Interesting Facts about the Brain. Explain how the nervous system is classified. The nervous system in humans can be broadly classified into two types, namely, the peripheral nervous system and central nervous system. The central nervous system primarily consists of the brain and the spinal cord.

The system coordinates and controls various aspects of life, ranging from physical attributes heartbeat, breathing to mental capabilities memory, intelligence. The nerves and ganglia that are present outside the brain and spinal cord contribute to the peripheral nervous system. The primary role of the PNS is to connect the central nervous system to the rest of the body, such as the limbs, skin.

The brain is enclosed within the skull, where it is suspended in a layer of fluid called the cerebrospinal fluid. It protects the brain from minor mechanical shocks and jolts. Furthermore, it also serves minor immunological roles and provides the necessary nutrients required by the brain. Put your understanding of this concept to test by answering a few MCQs.

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Different sections of the human brain: The brain can be divided

And it is very helpful for me. Biology Biology Article Human Brain. Frequently Asked Questions Q1. Describe the Central Nervous System. Explain the Peripheral Nervous System. How is the brain protected in the body? New sensory information combined with memory allows the brain to give meaning to objects. The occipital lobes are responsible for the processing of visual information.

They control the interpretation of different colours and shapes. The Glands The brain contains two major glands: The pineal gland is stimulated by darkness and light and produces melatonin, which helps modulate sleep patterns. It also has some sort of role in sexual role maturation, but its exact function is unclear. The pituitary gland regulates the secretion of hormones and is responsible for growth, as well as various organ and bodily gland functionality.

The Thalamus and The Hypothalamus The thalamus is a small section of the brain located just above the brain stem. As the pituitary gland controls the body's hormonal secretion, the hypothalamus plays a role in: Temperature control Daily physiological cycle Appetite Sexual behaviour Emotional regulation The Human Brain The combination of all these components creates the intricate mechanism that is the human brain.

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Different sections of the human brain: The largest part is the

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Quizlet review - 28 May 11 minutes reading Author: Chelsea. How to write effective study notes? The hypothalamus is part of the diencephalon, a region of the forebrain that connects to the midbrain and the cerebrum. The hypothalamus helps to process sensory impulses of smell, taste, and vision. It manages emotions such as pain and pleasure, aggression and amusement.

The hypothalamus is also our visceral control center, regulating the endocrine system and internal functions that sustain the body day to day. It translates nervous system signals into activating or inhibiting hormones that it sends to the pituitary gland. These hormones can activate or inhibit the release of pituitary hormones that target specific glands and tissues in the body.

Meanwhile, the hypothalamus manages the autonomic nervous system, devoted to involuntary internal functions. It signals sleep cycles and other circadian rhythms, regulates food consumption, and monitors and adjusts body chemistry and temperature.

Different sections of the human brain: Each brain hemisphere (parts of

Download Brain Lab Manual. An article in Science Daily on a research study about REM sleep and the ponsa part of the brain stem. Visible Body Web Suite provides in-depth coverage of each body system in a guided, visually stunning presentation. Cells that Form the Nervous System. Sight, Sound, Smell, Taste, and Touch. For students. For instructors.