2How the Nervous System Works The nervous system coordinates all of the activities in the body.It’s a complex network that allows communication between the brain and parts of the body.Examples of this include breathing, digesting food, sensing pain, feeling fear, etc.The nervous system is in two main parts.The first part is the CNS (central nervous system) which consists of the brain and spinal cord.The second part is the PNS (or peripheral nervous system) which consists of the nerve cells and the neurons. They are like a communication system.
3Autonomic Nervous System nervous system) Controls the involuntary functions. (digestion & heart rate)Consists of a network of nerves divided into two smaller networks, (sympathetic nervous system & parasympathetic
4Somatic Nervous System Involves involuntary responses under your control.Sensory neurons messages eyes, ears, nose, tongue, and skin to CNS.
5Sections of the Brain Cerebrum Cerebellum Brain stem The Frontal Lobe The Parietal LobeThe Occipital LobeThe Temporal LobeCerebellumBrain stemThe Medulla OblongataThe PonsThe MidbrainThe ThalamusThe Hypothalamus
7Cerebrum The Cerebrum is the largest most complex part of the brain The Cerebrum has two sides which are called the left and right hemispheresThe left hemisphere controls the right side of your body and the right hemisphere controls the left side of your bodyEach hemisphere has four lobes which are:The Frontal lobeThe Parietal lobeThe Occipital lobeThe Temporal lobe
8The Frontal LobeThe Frontal lobe controls the use of language and voluntary movements.The prefrontal are part of intellect and personality
9The Parietal LobeThe Parietal lobe is in control of feeling hot, cold, pain and body position in spaceDamage to the left parietal lobe can result in Gerstmann's Syndrome. It includes right and left confusion, difficulty with writing, difficulty with math, disorders in language, and inability to perceive objects normally
11The Temporal LobePlays a role in judgment, hearing, smell memory, and thought.
12Diseases and Disorders Alzheimer’s DiseaseMultiple Sclelerosis- The myelin sheaths surrounding nerves in the brain and spinal cord are damaged, which affects the function of the nerves involved.EpilepsyCerebral PalsyParkinson’s DiseaseNeurofibromatosis
13How Interesting!There are millions of nerve cells in a human body. This number exceeds even the Milky Way.By the time of its birth, the baby’s brain consists of around 10 million nerve cells.As we grow older, the brain loses a gram each year.The speed of message transmission to the brain can be as high as 180 miles per hour.
14Questions How many main parts does the nervous system contain? What do the two main parts of the nervous do?What does the Occipital Lobe do?What does the Temporal Lobe do?