Mina Kim Period 3

Page 7

NERVOUS SYSTEM

Whenever you think, your nervous system is at work. Your nervous system can be divided into two, the PNS and the CNS. PNS is the neurons, and the CNS is the brain and the spinal cord. The brain gets information from the neurons, and interprets it. • PNS is the neurons that are spread around our body • CNS is the brain and the spinal cord, and they both can make decisions about what to do, though the brain makes most of the decisions, and the spinal cord only acts on instincts to protect your body. Pathogen: Clostridium Botulinum is a bacteria that causes the nervous system to paralyze. Some symptoms include weakness, dizziness, and double vision. It can only be found in anaerobic conditions, such as cans or vacuumed packaging. Homeostasis: The nervous system works with the muscular, skeletal, and digestive system to maintain homeostasis. The nervous system controls both involuntary and voluntary muscles. A part of the CNS controls the involuntary muscles, like the smooth muscles that work the organs of the digestive system. The nervous system also controls the voluntary muscles like the skeletal muscles that move our arms. Without any of it, we will not be able to function properly. Not to be able to digest food and to move around might be big problem. Function: the nervous system stores memory, controls the voluntary and involuntary muscles, and sends commands to other parts of the body. The neurons that are spread all over our body sends messages back to inform the brain. And the brain remembers important memories and learn from mistakes. The nervous system enables us to think, and talk, and do everyday things that seem easy, but without the nervous system we won’t be able to do anything.

The CNS of the nervous system The nervous system. The red part is the CNS and the blue part is the PNS


Issuu converts static files into: digital portfolios, online yearbooks, online catalogs, digital photo albums and more. Sign up and create your flipbook.