Nervous System
By: Natalie Giraldo
What is the nervous system?
The nervous system is a collection of nerves and other cells known as neurons that send signals between body parts. The nervous system can also be known as the bodies electric wiring.
Nervous Tissue
The tissue in the nervous system is made up of 2 classes of cells called neurons and neuroglia.
Neurons
These nerve cells communicate with the body by transmitting electrochemical signals. Neurons are also classified into 3 classes afferent, efferent and interneurons.
- Afferent neurons: Neurons that send sensory signals to the central nervous system.
- Efferent neurons: Neurons that send signals from the central nervous system to effectors in the body like muscles and glands.
- Interneurons: neurons located in the central nervous system that combine information sent from the afferent neurons and send the function to the efferent neurons.
Neuroglia
These cells are the helper cells of the nervous system. Each neurons in our body is surround by neuroglia that protect, feed, and insulate the neuron. Neuroglia is responsible for making sure everything in the system is functioning right.
Brain
The brain is the control system of everything that happens in the body. The nerves in our body are flowing in and out of the brain and spinal cord, and together they make the central nervous system. The brain is where the information is processed and where responses to the body originate.
Spinal cord
The spinal cord is the other half of the central nervous system where it connects the brain and peripheral nervous system. This is the main pathway of information sending messages from nerve to nerve.
Problem associated with system
Brain tumors: Abnormal tissue growing in the brain and interfering with the nervous system
Cerebral Palsy: Defect and damage to the brain during or before birth.
Epilepsy: condition of the nervous system that leads to seizures
Other systems
Muscular system works with the nervous system by helping our organs more once the central nervous system sends signals to the organ.