The Nervous System By: Austin Broussard. Main Systems Central Nervous System (CNS)- is made up of the brain and the spinal cord, it completes the function.

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Presentation transcript:

The Nervous System By: Austin Broussard

Main Systems Central Nervous System (CNS)- is made up of the brain and the spinal cord, it completes the function of sending messages to and from the brain. Peripheral Nervous System (PNS)- is made of 12 pairs of Cranial nerves and 31 pairs of Spinal nerves. The PNS is responsible for monitoring many others systems in the body, senses like touch, controls involuntary activities such as blinking, and voluntary muscle control. PNS has two major parts the somatic and the autonomic nervous systems.

Major Organs Brain- The brain is like a central computer for your body it monitors everything that happens in or to your body. The brain sends and receives messages from the entire body. Spinal cord-The spinal cord transmits the messages from the brain to the body using nerves.

Brain The brain contains about 100 billion neurons or nerve cells and trillions of glia or support cells. The brain controls all of the body using nerves. The brain monitors all of the other systems in the body.

Spinal Cord The spinal cord is a collection of nerves that connects the brain to the rest of the body. The Vertebrae surrounds the spinal cord protecting it. The average spinal cord is cm long and about the width of your finger; while the vertebral column is about 70 cm long. The spinal cord contains 13,500,000 neurons that transmit electro-chemical signals.

Interactions The nervous system controls everything that happens in the body and all of its systems. The nervous system sends messages to and from the brain through nerves to the rest of the body.

Facts There is more neurons in the human body than stars in the Milky Way. Neurons are the largest cells in the body; and they don’t undergo mitosis. The average adult male’s brain weights 1375 grams and the average females weights 1275 grams. Every year you lose 1 gram of brain as you grow older.

Sources facts-about-nervous-system.html facts-about-nervous-system.html my/brain/Spine.shtml my/brain/Spine.shtml e.html e.html –