The Humans Bodies Nervous System
The nervous system
The nervous system is a complex and sophisticated system that coordinates body activities such as walking speaking. It is made up of two major divisions the Central Nervous System and the Peripheral Nervous System. The Central nervous system consists of the brain and spinal cord. The Peripheral nervous system consists of all other neural elements, including the peripheral nerves and the autonomic nerves.
Spinal Cord- The spinal cord is a long thin mass of bundled neurons that carry information through the vertebral cavity to the stem of the brain.
Neurons- Neurons are nerve cells that communicate within the body by transmitting electrochemical signals.
NERVES- Nerves are bundles of axons that act as information highways. They carry signals between the brain your spinal card and the rest of your body. The wrapping of nerves help protect and increase speed of the communication within the body.
Meninges- Meninges are protective covering of the central nervous system.
Integration- Integration is the processing of many sensory signals that are passed into CNS. The signals are then evaluated, compared, used for decision making, discarded or committed to memory as deemed appropriate. This all takes place in the gray matter of the brain and spinal cord.
Motor- Once the networks of inter neurons in the CNS evaluate sensory information and decide in an action they stimulate efferent neurons. Motor neurons carry signals from the gray matter through the nerves of the peripheral nervous system to effector cells.
Body Systems Working Together
Cardiovascular System- The Cardiovascular System delivers oxygen, nutrients and white blood cells by pumping blood around the body. The brain regulates heart rate and blood pressure in the Cardiovascular System. Baroreceptors in the Cardiovascular System send information to the brain about blood pressure.
Muscular System- The Muscular System enables motion in the body with its muscles. Muscles in this system also generate heat to maintain body temperature and contracts the heart. Receptors in the muscles give the brain information about body position and movement. The brain in the Nervous System controls the speed in which food moves through the digestive track.