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The Nervous System.

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Presentation on theme: "The Nervous System."— Presentation transcript:

1 The Nervous System

2 How 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.

3 Autonomic 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

4 Somatic Nervous System
Involves involuntary responses under your control. Sensory neurons messages eyes, ears, nose, tongue, and skin to CNS.

5 Sections of the Brain Cerebrum Cerebellum Brain stem The Frontal Lobe
The Parietal Lobe The Occipital Lobe The Temporal Lobe Cerebellum Brain stem The Medulla Oblongata The Pons The Midbrain The Thalamus The Hypothalamus


7 Cerebrum The Cerebrum is the largest most complex part of the brain
The Cerebrum has two sides which are called the left and right hemispheres The left hemisphere controls the right side of your body and the right hemisphere controls the left side of your body Each hemisphere has four lobes which are: The Frontal lobe The Parietal lobe The Occipital lobe The Temporal lobe

8 The Frontal Lobe The Frontal lobe controls the use of language and voluntary movements. The prefrontal are part of intellect and personality

9 The Parietal Lobe The Parietal lobe is in control of feeling hot, cold, pain and body position in space Damage 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

10 The Occipital Lobe Controls the sense of sight

11 The Temporal Lobe Plays a role in judgment, hearing, smell memory, and thought.

12 Diseases and Disorders
Alzheimer’s Disease Multiple Sclelerosis- The myelin sheaths surrounding nerves in the brain and spinal cord are damaged, which affects the function of the nerves involved. Epilepsy Cerebral Palsy Parkinson’s Disease Neurofibromatosis

13 How 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.

14 Questions 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?

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