Five major structures of the brain
A disruption or blockage in the system can cause a build up of CSF, which can cause enlargement of the ventricles hydrocephalus or cause a collection of fluid in the spinal cord syringomyelia.
It is the outermost portion that can be divided into the four lobes of the brain.
5 functions of the brain
These nerves are responsible for very specific activities and are named and numbered as follows: Olfactory: Smell Optic: Visual fields and ability to see Oculomotor: Eye movements; eyelid opening Trochlear: Eye movements. The brainstem, at the top of the spinal cord, controls breathing, the beating of the heart, and the diameter of blood vessels. They contain vitamins and minerals that are important for the nervous system. The brain stem contains the pons and medulla oblongata. Nerve cells make up the gray surface of the cerebrum which is a little thicker than your thumb. Physiology: The branch of biology that deals with the normal functions of living organisms and their parts. Your brain had to think about pedaling, staying balanced, steering with the handlebars, watching the road, and maybe even hitting the brakes — all at once. A given neuron has a great quantity of sites available on its dendrites and cell body and receives signals from many synapses simultaneously, both excitatory and inhibitory. The cerebellum is assumed to be much older than the cerebrum, evolutionarily. This little gland also plays a role with lots of other hormones, like ones that control the amount of sugars and water in your body. Lobes of the brain: The brain is divided into four lobes, each of which is associated with different types of mental processes. This portion of the brain is also the largest. Many simple or primitive functions that are essential for survival are located here. The midbrain consists of the tectum and tegmentum.
These nerves are responsible for very specific activities and are named and numbered as follows: Olfactory: Smell Optic: Visual fields and ability to see Oculomotor: Eye movements; eyelid opening Trochlear: Eye movements. The cranial nerves for smell and vision originate in the cerebrum.
Brain Components and Functions Brainstem The brainstem is the lower extension of the brain, located in front of the cerebellum and connected to the spinal cord. The cerebellum is at the back of the brain, below the cerebrum.
This system is a fairly old part of the brain and one that humans share with many other vertebrates; in reptiles, it is known as the rhinencephalon, or "smell-brain," because it reacts primarily to signals of odor. A completely different arrangement for transmitting signals is the electrical synapse, at which the cell membranes of two neurons are extremely close together and are linked by a bridge of tubular protein molecules. Many simple or primitive functions that are essential for survival are located here. The main function of the cerebellum is this muscle coordination. The brain then makes sense of that message and fires off a response. The arachnoid is made up of delicate, elastic tissue and blood vessels of varying sizes. The cerebral cortex is divided into four sections, called "lobes": the frontal lobe, parietal lobe, occipital lobe, and temporal lobe. It also regulates body temperature, blood pressure, emotions, and secretion of hormones. The cerebellum makes up approximately 10 percent of the brain's total size , but it accounts for more than 50 percent of the total number of neurons located in the entire brain. The original hollow structure is commemorated in the form of the ventricles, which are cavities containing cerebrospinal fluid.
Other areas of the occipital lobe are specialized for different visual tasks, such as visuospatial processing, color discrimination, and motion perception.
The weight of the brain changes from birth through adulthood. The pia mater has many blood vessels that reach deep into the surface of the brain. It consists of two horns curving back from the amygdala.
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