It is the most complicated and highly specialized organ of the body. The dorsal vascular wall forms anterior choroid plexus. Adrenal Glands A pair of endocrine glands just above the kidneys. The anterior pair of optic lobes are called Superior colliculi and the posterior optic lobes are called Inferior colliculi both are formed of grey matter.
It is responsible for more abstract skills, such as creativity, spatial ability, and artistic and musical skills. The brain or encephalon is a white, bilaterally symmetrical structure. It co-ordinates the action of different regions of cerebral hemispheres.
The brain is the site that controls the human body.
For example, a person may be able to play the piano well, long after forgetting the names of the pieces of music.
The cerebral hemispheres have the following functions: The brain is being surrounded by three membranes called meninges sing-meninx. The outer layer of cerebral hemispheres is called cerebral cortex or neopallium. Hypothalamus contains higher centres of autonomic nervous system and controls carbohydrate, fat metabolism, blood pressure and water balance.
The cavity of the olfactory lobes or rhinocoel is not well marked. Temporal Lobe The portion of the cerebral cortex that is just above the ears and that is involved in hearing, language processing, and memory.
It is the last part of the forebrain and is almost covered dorsally by cerebral hemispheres. The ridges of these convultions are called gyri and depressions between them as sulci.
At two places the piameter fuses with the thin, dorsal surface of the brain to form choroid plexus. Its cavity is called fourth ventricle or metacoel.
There are four, solid optic lobes, which arise from the dorsolateral side of the mid brain. The cerebrospinal fluid is also present within the spinal cord. It makes the movement of the body smooth, steady and coordinated. The cavities within the cerebral hemispheres are called lateral ventricles First and second ventricles which open to third ventricle cavity of diencephalon by a foramen of Monro Fig.
The brain is formed of two types of nervous tissue, Grey matter on the outer side and White matter on the inner side. In a new born baby it is about gms and becomes double after one year and has a volume of about c.
Temporal Lobe The temporal lobe is located alongside the frontal and parietal lobes, just above the ear. The centres of reception of these are located in the sensory areas called soma esthetic area present in the parietal lobe. It consists of number of scattered masses of the grey matter in the white matter.
Such co-operation created the modern man with his ability to think. These spaces surrounding the brain as well as the cavities within the brain are filled with a lymphatic fluid, called cerebrospinal fluid CSF.
Grey matter also forms islands on the white matter. Despite centuries of advancements in medical sign, the entire functionality of the human brain remains a mystery for medical experts as new types of neurons and brain functions are discovered every now and then.
Cerebellum is the second largest part of the brain. They are collectively called as corpora quadrigemina. The former acts as the centre for visual reflex and the latter acts as centre for auditory reflex. It is divided into right and left cerebral hemispheres by a deep longitudinal median groove Fig.
The cavities within the cerebral hemispheres are called lateral ventricles First and second ventricles which open to third ventricle cavity of diencephalon by a foramen of Monro Fig.
The brain is formed of two types of nervous tissue, Grey matter on the outer side and White matter on the inner side. In case of frog there are two hollow optic lobes which are together known as corpora bigemina.
Sensory Cortex The area at the front of the parietal lobes that registers and processes body touch and movement sensations. Autonomic nervous system ANS including sympathetic and parasympathetic nerves.
The Controller of Humans: The Brain Essay Words | 4 Pages. The human brain is composed of many important parts of everyday life. The exterior part of the brain has 9 part in which include are divided into different sections, lobes, cortex, and areas.
This essay focuses on the parts and functions of human brain in addition to the ongoing research on the newly discovered parts of the brain. Although medical experts are aware of a large number of parts and functions of the brain, some astounding new discoveries are made after short intervals.
The brain’s sensory switchboard, located on top of the brainstem; it directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and medulla. This means that different parts of the brain carry out different tasks, for example, vision, voluntary movement and speech.
The idea is that not all parts of the brain do the same thing, and that each part functions on its own, without the aid of other areas of the brain. The human brain is a specialized organ that is ultimately responsible for all thought and movement that the body produces.
This allows humans to interact with their environment by communicating with others and interacting with inanimate objects near their positions. The nervous system of the human being consists of several parts.
The main structures are the brain and the spinal chord. The system also includes nerves which sense external and internal stimuli and then relate all information to the central processing unit, i.e. the brain.Parts of the brain essay