The Nervous System
How does the structure of the nervous system control its functions and ensure you have a healthy body?
The function's of the nervous system
Parts of the nervous system
Brain
The brain is the control system for the whole body. The largest and most important part of the brain is the Cerebrum. The cerebrum controls things like memory, speech, and intelligence. However in terms of survival the Hypothalamus would be the most important part of the brain. This is because the Hypothalamus controls hunger/thirst, and regulation of body temperature.
Spinal cord
The spinal cord is a thin bundle of nervous tissue and support cells that is attached to the part of the brain called the medulla. The spinal cord it like a railroad for messages sent from the body to the brain or from the brain to the body. The vertebrae protects the spinal cord. The brain and spinal cord create the central nervous system.
Nerves
The nerves are and important part of the nervous system. These nerves help transfer messages to parts of your body to do everyday thing.
Structure of the nervous system
The structure of the nervous system
The brain is by far the most important part of the nervous system. Its has three main parts, the cerebrum, cerebellum, and the medulla. The medulla is also know as the brain stems and it connects to the spinal cord. The medulla controls breathing, heart rate and blood pressure. Those are all involuntary actions, if we did not have the medulla we would have to constantly tell our heart to beat. The cerebrum is in charge of perception, thought, imagination, judgment, and decision making. The cerebrum is also the largest part of the brain. The cerebellum controls coordination, balance, voluntary motor movements, sense of position of the different parts of your body,and memory. This is the second largest part of your brain. The Hypothalamus is the part of the brain that controls hunger/thirst, and regulation of body temperature.
Your spinal cord play a big part in sending messages to other nerves in your body. When the brain has a message it send it to the spinal cord which sends it to the part/s of the body it needs to go. The spinal cord is made out of bundles of neurons that carry impulses from all parts of the body to the brain and impulses from the brain to all parts of the body. The spinal cord is protected by your vertebrae.
The nerves in your body are also part of your nervous system. In fact the nervous system got its name from the nerves. Nerves are made up of 7 parts. These parts are, cell body, neurons, nucleus, dendrite, axon, myelin sheath, and nodes of Ranvier. These nerves are all over your body helping transfer messages as well as protect you.
Keeping your nervous system healthy
Threats
- Alochol
- Drugs
- Damage to the spinal cord
- Damage to the brain
- Damaged nerves