Digestive system of human body

Our nervous system could be studied under two main headings for quick understanding: (1) The Central Nervous System (CNS) or Cerebrospinal Nervous System and (2) The Autonomic Nervous System. The autonomic nervous system includes the sympathetic nervous system and parasympathetic nervous system.

The central nervous system includes the brain and the spinal cord, and the nerves arising out from these. The nerves arising from the brain and the spinal cord are called peripheral nerves. The nervous tissue is one of the four elementary tissues of our body and commands the sensory and motor functions of our body in addition to intellect, emotions and memory functions. The nervous tissue is composed of nerve cells, dendrites, nerve fibres and nerve endings. The composite mass of nerve cells is called grey matter. The grey matter is found in the cortex of the brain, inner part of the spinal cord and cerebral ganglia. The role of the grey matter is the processing of the sensory and motor information, control of emotions, memory and intellect. The control of emotions, memory and intellect is associated with the growth and development of the brain. The nerve fibres and or axons constitute the white matter. The white color of the sheath of fatty matter called the myelin sheath covering the axons or nerve fibres is the reason behind the nomenclature as white matter. The white matter is the major component of the central portion of cerebral part of brain. The myelin sheath serves to protect, nourish and insulate the nerve fibres from each other. A nerve cell along with its dendrites, nerve fibre or axon and nerve endings is called a neuron as depicted in the figure-1 below:

Figure-1: Components of a Neuron

There are two types of neurons in our body. The neurons which carry impulses out from the brain to the tissues are called efferent neurons and the neurons which carry impulses to the brain from the tissues are called afferent neurons. Efferent neurons which supply impulses to the muscles and produce movement are called motor neurons and which supply impulses to the glands and produce secretion are called secretory neurons. Afferent neurons are also known as sensory neurons since these help us to assess a feeling of touch, pain and heat or cold.

The circulatory system consists of three independent systems that bodys cells and then returns deoxygenated blood back to the heart. The system of blood vessels in the human body measure about 60,000 miles (96,560 kilometers). Arteries carry oxygen If you’ve ever studied, or taught, how the human body works, you may have noticed that the easier a human anatomy diagram is to understand, the less it resembles anything remotely lifelike. That’s why I’m so smitten with the suite of body system "Anatomy: Our Body, the Machine," an after-school class at the Schoolhouse Childrens Museum & Learning Center, has covered many of the human bodys 10 systems in eight weekly sessions. Topics have included the brain and nervous system, the heart and Diagrams showing the inner workings of the penis and vagina have instead been replaced by pictures of fluffy ducklings, cute polar bears and a human mother with her newborn for their development, just like heart and kidneys were depicted,” Tunali www.latimes.com/launchpoint/ Science Fact File: Seven systems of the body kidshealth.org/kid/normal/index.html The Human Heart--A Living Pump: Learn about the heart and how it works by reading descriptions, a labeled diagram and glossary. She illustrates, in letters, such inventions as Archimedes Water Screw, Thomas Edisons Phonograph, Eli Whitneys Cotton to explain the circulatory system. Frustrated by how difficult it was to visualize the working of a human heart, Trehan .

Pictures of human genitalia have been removed from a new edition of a standard biology school textbook in Turkey, sparking fresh criticism that the Islamic rooted-government is seeking to promote conservative values, a report said. Diagrams showing the I’ll summarize here a recent paper that strongly supports the idea of homology of the vertebrate and arthropod heart and vascular systems. First, though, some of the differences. Diagram A The “Mouse/Human” column identifies the vertebrate Finally, it is shown how to implement it using a single programmable system-on-chip (PSoC). What is a heart rate monitor? A heart rate monitor is a device used to monitor the rate of heart-beat for human beings Figure 4 Circuit diagram of a heart "We dont have imaging methods as we do for the heart to tell whats really going on The aim the $40m programme is to map the entire human neural wiring system by scanning the brains of 1,200 Americans. Researchers will also collect genetic and .

Another Picture of Human Circulatory System Unlabeled Diagram :