The Humans Bodies Nervous System

By: Gabby

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.

Structure

Brain- The brain is one of the most important organs in the nervous system, It acts as a control center for the body. One of the many daily jobs the brain does is controlling higher mental functions suck as consciousness, memory, planning and voluntary actions. The brains lower body responsibilities include the maintenance of respiration, heart rate, blood pressure and digestion.

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.

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Major functions

Sensory- Sensory is the collection of information from sensory receptors. Sensory receptors monitor the bodies internal and external conditions

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.

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Alzheimer Disease

The disease starts when the fore brain and hippocamus memory section of the brain are attacked. The most noticeable affect of Alzheimer's is memory lost from recent events. The disease can be passed down families but the risk of developing Alzheimer's increases with age.

Bipolar Disorder

The illness is characterized by extreme changes in mood, behavior, and energy levels. The disorder tends to run in families people experience abnormally elevated mood lasting a week or more. The experience Highs and Lows mania being inflicted self esteem (high) depression being a loss of energy (low).

Aphasia

Aphasia is a loss of speech that originates from the brain. If a person suffers a stroke or traumatic brain injury, in the left side of the brain where the speech centers are located, they may suffer speech impediments. From difficulty in finding the right word, speaking slowly and with difficulty, or complete loss of speech.

Body Systems Working Together

Skeletal System- The skeletal system makes up the framework of the body and allows us to move when our muscles contract. The skeletal system also protects internal organs like the brain which is vary important in the nervous system. The spinal cord is very important to the nervous system and its in protected by a vertebra in the skeletal system. The nervous system is also important to the skeletal system the brain regulates our bones and allows us to move them.

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.