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Senses and Musculoskeletal System

SENSES In 1760, the philosopher Immanuel Kant said that our knownledge of the outer world depends on our forms of perception. There are five human senses: sighth, smell, touch, hearing and taste. Each of the senses consists of specialized cells that have receptor that react to a specific stimuli. These cells are connected to the brain through the nervous system. The sighth is probably the most developed sense of the human body. - Sighth The eye is the organ of vision. The eye has a complex structure which consists of a lens that focuses light on the retina. The retina is covered by two types of photoreceptor cells with cone and cane shapes. The cone-shaped cells are sensitive to the colour of light and are located in the part of the retina called the fovea, where the lens focuses light. Cone-shaped cells are not sensitive to colour, but have a high sensitivity to light. The canes are located around the fovea and are responsible for peripheral vision and night vision. The eye is con...
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Mental Health

- Mental diseases are those diseases that affect the brain. There are a lot of mental diseases, but the most common ones are: ANXIETY DISORDERS Anxiety is a normal reaction to stressful situations. Someone suffering from anxiety can have difficulties with relationships, work, family, studies... There are different kinds of this disorder: -PANIC ATACS: Is the appearance of fear or terror, often associated with feelings of imminent death. The symptoms include the lack of air, chest pain and discomfort.   -PHOBIC DISORDERS: Many people have fear to spiders, high places, etc, but they can tolerate them. People who suffer from phobic disorders can't. Some examples of this disorder are a social phobia, agoraphobia... -POST-TRAUMATIC STRESS DISORDERS: These ones takes place when someone has been exposed to a traumatic situation. Its symptoms are nightmares, irritability, feeling of anger... -OBSESSIVE COMPULSIVE DISORDER: The individual experiences ...
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Nutrition Systems

Nutritional diseases: - Obesity or overweight is an excessive accumulation of fat in the body. People that carry out this problem tend to suffer from diabetes, high blood pressure and cardiac disorders, among other physical complications. – Bulimia is an eating disorder which consists of eating large amount of food and then, expulse it by vomiting or abusing of laxatives and diuretics (as well as doing excessive exercise). It’s related with anorexia and they are both considered to be a psychological eating disorder.                                                                              ...
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Infectious Diseases

I nfectious diseases are disorders caused by organisms- such as bacteria, viruses, fungi or parasites. Some infectious diseases can be passed from one to another. Some are transmited by bites from insects or animals and others by eating food in bad ways. Each infectious disease has its own specefic symptons. General symptons common to a number of infections desease include:              - Feber              - Fatigue              - Diarrea - Hepatitis A :  highly contagious leve diseased. - Hepatitis B : most common infectious disease in the world today. Inflamation of thee liver. - Hepatitis C : less common, less severe. Symptomatic, people develop chronic infection. -Influenza : less of a public health treated, serious disease. It attacks the human respiratory tract. -Malaria : m...
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Health In General

"State of complete physical, mental, and social well being, and not merely the absence of disease or infirmity." Health is a dynamic condition resulting from a body's constant adjustment and adaptation in response to stresses and changes in the environment for maintaining an inner equilibrium called homeostasis. Two aspects to health Most people accept that health can be divided into two broad aspects - physical and mental health. Physical health For humans, physical health means a good body health, which is healthy because of regular physical activity (exercise), good nutrition, and adequate rest. As a country's or region's people experience improved nutrition, health care, standards of living and quality of life, their height and weight generally increase. In fact, most people, when asked for a definition of health talk about physical health. Physical health relates to anything concerning our bodies as physical entities. Physical health has been the basis ...
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