Nervous System Outline

The digestive system is one of the body’s largest systems (about 8-10 metres long) and it is made up of a series of organs and glands. Its processes include: food ingestion, enzyme secretion, digestion, absorption and defecation. Its organs form the gastrointestinal (GI) tract.

The respiratory and cardiovascular systems work together to supply oxygen to the body’s cells, remove carbon dioxide and regulate the Ph of the body’s fluids. This system of regulation is called homeostasis. (www.wiki.answers.com, 2013)

Veins and arteries- The arteries are perceived as caring oxygenated blood to the tissue and the veins carry deoxygenated blood back to the heart.

Nervous system has two main parts: the central nervous system, which contains the brain and spinal cord, and the peripheral nervous system, which contains the nerves throughout our body that send input back and forth between the periphery and the central nervous system.

Many of these have elements that maximise or increase the surface area. The human body is a specialized organism that has many body systems working together to provide the necessities to survive. The five main systems are circulatory, respiratory, digestive, excretory, nervous and hormonal. The circulatory system is responsible for transporting blood through the body. It is pumped by the heart through the arteries and capillaries to the individual cells, where O2 and nutrients are exchanged for CO2 and other waste products. In the veins, transported back to the heart, CO2 gets eliminated after reaching the lungs/respiratory system. The respiratory system provides the body with oxygen, and eliminates CO2, its main organ is the lungs. The digestive system takes in food and fluids to supply the body with nutrients, which are made usable and then absorbed. The non absorbable leftovers and the waste get eliminated from the body. Important organs of the digestive system are the stomach, intestines, pancreas, and liver with the gallbladder. The excretory system eliminates ammonia/nitrogen waste. Main organs are the kidneys, ureter, bladder, and urethra, which concentrate, channel and store the urine. The nervous system controls the body, as well as the senses. The main organ is the brain and spinal cord, the essential nerve cell is called a neuron. The human body connects to evolution

The human nervous system is divided into two parts, the central nervous system and the peripheral nervous system. The central nervous system, CNS, is just the brain and spinal cord. The peripheral nervous system, PNS, includes the nerves and neurons that extend outwards from CNS, to transmit information to your limbs and organs for example. Communication between your cells is extremely important, neurons are the messengers that relay information to and from your brain.

The nervous system is made up of two sections, the Central Nervous System, which is composed of the brain, cerebellum, and the spinal cord. Whereas, the Peripheral Nervous System contains nerves that allows your body to move, also known as sensory and motor nerves.

There are two parts to the nervous system which are: the central nervous system and the peripheral nervous system. The central nervous system includes the brain and spinal cord and some nerves, whereas the peripheral nervous system includes all the other nerves and it carries information to the central nervous system and also from it. The central nervous acts as the central control region of the human nervous system. The CNS processes information and issues commands around the body. The autonomic nervous system is the command network the CNS uses to maintain the body 's homeostasis. It regulates heartbeat and controls muscle contractions in the walls of blood vessels, digestive, urinary, and reproductive tracts. It also carries messages that help stimulate glands to secrete tears, mucus, and digestive enzymes.

The peripheral nervous systemcontrols all voluntary amd involutary muscles and glands. Peripheral nervous system contains all your nerves amd nerve bundles excluding the brain and spinal cord. The Central spinal cord. The CNS receives sensory infpormation from the nervous system and controls the body's responses. The diffrence between peripheral and central nervous system are th CNS, collections of neurons are called nuclei. In the PNS, collection of neurons are called ganglia. another diffrence would be the CNS, collections of axons are called tracts. In the PNS, collections of axons are called nerves.

Role in Body: The nervous system is responsible for control, coordination, and communication in the body (very organized + well ordered).

Central nervous system- Consists of the Brain, Spinal Cord, and Autonomic nervous system (ANS). The brain is the center of the nervous system.

The part of the nervous system encompasses the brain and spinal cord. There is both white and grey matter in the central nervous system (CNS). Its main function is to send, receive and interpret motor, sensory and cognitive information around the entire body.

The peripheral nervous system is abbreviated as PNS. This system is the part of the nervous system that consists of the nerves and ganglia on the outside of the brain and spinal cord. In this system the nerves extend from the brain and the spinal cord. Two nerves that are included in the peripheral nervous system are spinal and cranial nerves. The spinal nerves carry impulses to and from the spinal cord. The cranial nerves carry impulses to and from the brain. The function of the peripheral nervous system is to serve as a communication lines among sensory organs, the brain and spinal cord, and glands or muscles. This system consists of mixed, sensory and motor nerves. The mixed nerves consists of both sensory and motor nerves. The sensory nerves run from stimulus receptors that inform the central nervous system of the stimuli. The sensory nerves are considered afferent. The motor nerves run from the central nervous system to the muscles and glands, called effectors that take action. The motor nerves are considered efferent. The peripheral nervous system is split into the sensory-somatic nervous system and the autonomic nervous system. The sensory-somatic nervous system consists of twelve pairs of cranial nerves and thirty-one pairs of spinal nerves. This nervous system transmits sensory information from the body to the brain and motor movements from the brain to the body. The autonomic nervous system is the

side of the heart pumps oxygen-poor blood from the cells of the body back to the

The central nervous system and the peripheral nervous system work together to collect information from within the body and from the environment outside it. The systems process all the collected information and send instructions to the body; to obtain an appropriate response. Once the data arrives, the brain will sort and file it before sending out any commands on what to do. The central system is the main command center of the body that contains the brain as well as the spinal cord. The peripheral nervous system contains a network of nerves that connect the rest of the body to the central nervous system.