Nursesnoteover 1 year ago

🧠Human Brain🧠 ✍️Introduction ➖The brain of a human being is the central organ of the nervous system. ➖The human brain consists of three parts namely the cerebrum, the brainstem and the cerebellum. ➖The brain of a human being plays significant role, as it controls most of the activities of the human body. ➖The brain is located inside the head, and protected by the skull bones. ➖The brain consists of more than 86 billion neurons and almost equal number of other cells as well. ➖Brain activity is made possible because of the interconnections of all the neurons that are linked together. ➖The study of brain functions is known as neuroscience. ➖An adult human brain weighs about 1.2 to 1.4 kg (i.e. average weight); which is about 2% of the total body weight. ✍️Parts of Human Brain ➖A human brain is primarily classified as the − ➭ Forebrain ➭ Midbrain ➭ Hindbrain ➖Forebrain is largely made up of cerebrum, thalamus, hypothalamus and pineal gland. ➖Midbrain is largely made up of a portion of the brainstem. ➖Hindbrain largely made up of the remaining brainstem, cerebellum and pons. ➖Further, the (brain) hemisphere is conventionally classified into four lobes namely − ➭ Frontal lobe ➭ Parietal lobe ➭ Temporal lobe ➭ Occipital lobe ➖The naming is done according to the skull bones that overlie them. ✍️Cerebrum ➖Divided into nearly symmetrical left and right hemispheres by a deep groove, the cerebrum is the largest part of the human brain. ➖Cerebrum normally controls higher brain functions including language, logic, reasoning, and creativity. ✍️Functions of Human Brain ➖Perceive or sense the signal coming from the (external) environment ➖Giving sense of feelings and emotion ➖Regulating and controlling the human behaviors ➖Regulating and controlling the physical action ➖Regulating the memory function ➖Process of thinking (and other cognitive process)