In the human body, health is maintained through the interconnectedness of organ systems, proper posture, and stable biochemical metabolism.
The skeletal system is made up of bones and teeth. The normal human body has 206 bones which are needed for a variety of functions within the body. Bones are not static, which means they are constantly changing shape and composition to meet the body's needs.
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Protein is a found throughout the human body in muscle, bones, hair, nails, skin and enzymes. It is the main structural component of the cells in our body. Amino acids are the basic building blocks of protein.
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The spleen serves many purposes, from aiding in digestion to producing chemicals that destroy and recycle old blood cells. It’s also your personal blood bank in case of serious blood loss. If not working properly it causes many ailments such as obesity, bloating, muscle weakness, loose stool and constipation.
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Goose bumps appear due to an involuntary nervous system response called the pilomotor reflex. This primitive response occurs when hair follicles are stimulated by specific nerves in the skin, which triggers contraction of tiny muscle cells called arrector pili at the base of the hair follicles.
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Scalp pain and sensitivity occur for a variety reasons, ranging from common skin conditions and infections, to the physical irritation from scratching or harsh chemicals. Disorders affecting the nerves and blood vessels can also cause scalp tenderness and sensitivity.
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Mapping the mental activity of the brain shows that music stimulates parts of this organ just as food, drugs and sex do, reveals a report in the "Canadian Geographic" magazine. It is apparent that music can affect emotions and mood in the vast majority of individuals.
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The pain of a muscle strain can make sleeping a challenge. Finding a comfortable position is one consideration, but it's even more important to avoid postures that may aggravate the injury or delay the recovery. Keeping a few simple concepts in mind can help ensure that the chosen sleep posture helps in healing.
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If you're a fan of shows like "Westworld" and "The Walking Dead," you may be prone to experiencing crazy dreams. A new study explains why.
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Puberty can be an awkward time of life. Hormone changes during puberty may cause your child to gain some weight.
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When you turn 50 or 60, no one expects you to have the same energy levels you had in your teens and 20s. Slowing down as you age is normal, but experiencing chronic and extreme fatigue is not.
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Plugged ears may occur as a result of colds, infections or allergies. This symptom is related to fluid buildup in your eustachian tubes -- the tubes that connect your middle ear with the back of your nose and upper throat.
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When you’ve suffered from chronic knee pain, a knee replacement can give you a new lease on life, but hearing clicking noises coming from the joint may give you pause. Certain exercises will keep your knee functioning at its highest level and may quiet some of the noises.
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High heels can not only be painful, but also cause health problems. Here's a guide to help you choose heels that won't hurt.
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Your respiratory system controls your breathing and begins when you draw in air through your nose or mouth. The air travels through your windpipe into both of your lungs, where small air sacs capture oxygen and distribute it in your bloodstream through small blood vessels called capillaries.
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From infancy to late life, nutritional needs change. Children must grow and develop, while older adults must counter the effects of aging. The importance of age-appropriate nutrition during all stages of the life cycle cannot be overlooked.
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Taking a deep breath and experiencing right-sided chest pain provokes physical discomfort and anxiety. Chest pain brought on or worsened by forceful breathing is called pleuritic chest pain. This symptom typically originates from an infection, injury or other condition affecting the right lung or chest wall.
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Tightness in your knees can be irritating since it interferes with simple tasks like walking and sitting. The sensation of tight knee tendons is often due to tightness throughout the muscles that are connected to tendons.
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The tibialis posterior muscle is the leg muscle that points the foot down and in, and it plays a key role in keeping the arch of your foot stable during walking and running. Problems with this muscle can present themselves as pain on the inside of the ankle, a collapsing arch or difficulty standing on your toes.
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Bacteria are all around us, in the air, on objects and normally found in and on the human body. When bacteria is on the human body in the absence of disease, it is called a colonizer.
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A new study shows that American's are getting "shorter" while other countries in the world continue growing to new vertical limits.
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