What is the Nervous System??? Merges and monitors the actions occurring throughout the body Every task, such as typing on the computer, is the result of the nervous system Some actions may be voluntary, like touching an object Or actions may occur without your direct knowledge, such as digesting food
Why is our Nervous System Important?? It corresponds the various parts of the body and the organs that control the body’s functions The nervous system consists of two separate systems by function:f the b – involuntary system: includes the heart, lungs, digestive tract, and the skin – voluntary system: contains the muscles oody
Components of the Nervous System Structure –It bulges back behine the pons vorolii and the medulla oblongata and is overhung by the occipital lobes of the cerebrum –Cerebellum Functions –Long term memory –CO-ordination –Muscle tone –Movement –posture
Components of the Nervous System Cerebrospinal Fluid(CSF) – Functions: Bathes the brain and the spinal cord Allows nutrients and waste products to diffuse between the blood and the brain/spinal cord Protects the nerves against mechanical damage Structure –A clear watery fluid whose normal contents include gulcose, salts, enzymes, and some white blood cells(but no red blood cells)
Components of the Nervous System Cerebrum – The cerebrum is also know as the cortex (cortex=cerebrum ), and is the largest and most highly developed part of the brain The cerebrum is composed of two hemispheres separated from each other by the longitudinal fissure in the midline
Components of the Nervous System Hypothalamus –Functions: Posterior lube of the pituitary –A.DH. –Oxytocin The region of the forebrain in the floor of the third venticle, linked with the thalamus and the pituitary gland
Components of the Nervous System Medulla Oblangata –Functions: Breathing Heart-rate Swallowing Salivation Vomiting blinking The medulla oblongata is the extension within the skull of the upper end of the spinal cord, forming the lowest part of the brainstem
Alzheimer Disease Alzheimer disease, also known as AD, affects more women then men and generally lasts for five years. The younger the patient is at the time they receive the disease, the more severe the case is.
Parkinson Disease Parkinson disease is distinguished by voluntary movements, tremor while you are at rest, such as sitting, and rigidity in your muscles.
Tourette Syndrome Tourette syndrome is multiple forms of nervous ticks. It’s a frequent, irregular movement of the head, neck and shoulders. Other symptoms also include, snorting, sniffling or a variety of other involuntary vocalization.
Multiple Sclerosis Multiple Sclerosis is a common disease that affects more women then men and leads into the deterioration of the nervous system. Your body becomes weaker as time progresses.
Locked-In Syndrome Locked-In is caused by stroke, tumor or trauma to the most vital part of the rostral pons. I causes the inability to speak or make facial expressions.
----------------------Alcohol------------------------- Difficulty walking, blurred vision, slurred speech, slowed reaction times, impaired memory. A number of things influence how much alcohol affects the brain such as: how much and how often a person drinks; the age at which he or she first began drinking, and how long he or she has been drinking; the person’s age, level of education, gender, genetic background, and family history of alcoholism; whether he or she is at risk as a result of prenatal alcohol exposure; and his or her general health status.
Heroin Heroin is a high addictive drug. Cells in the brain become addicted to this drug that the user needs to have it on a daily basis. For the user, it starts off as a rush of pleasure and ends up as nothing more then a fog. Without this drug, the user is deemed useless until said user has taken in more of the drug.
Marijuana The parts of the brain that control emotions, memory, and judgment are affected by marijuana. Smoking it can not only weaken short - term memory, but can block information from making it into long - term memory. It has also been shown to weaken problem solving ability and decreases the attention span.