Archive for December, 2010
What is it?
The digestive system consists of the digestive tract, a series of hollow organs to form a tube from mouth to anus. Furthermore, the digestive system is made by other organs (liver, pancreas and gallbladder) that help the body digest and absorb food.
Parts of the digestive tract
The digestive tract consists of the mouth, esophagus, stomach, small intestine, large intestine (colon), rectum and anus. The interior of these bodies is hollow and is lined with a mucus layer. The mucosa of the mouth, stomach and small intestine presents a series of glands that produce juices that help digest food. Under the digestive tract mucous layer has a sheet of muscle that contract and relax to produce a movement called peristalsis, which helps move the food to the length of the tube. The movement of these walls pushes food and liquids. Read the rest of this entry »
The shoulder joint is one of the most complex of our anatomy. It consists of 4 joints:
A.-Glenohumeral. It is the main joint in the front is the tendon of the long head of biceps and subscapularis muscle. At its rear face is the rotator cuff consists of the supraspinatus, infraspinatus and teres minor that are inserted into the greater tuberosity.
B. clavicular acromiale: it is a very mobile joint held by the acromioclavicular ligament.
C.Sternoclavicular: It is shaped like a saddle and are subject to the ligament costoclavicular.
D. – scapula thoracic and scapular humeral: joints are atypical, being the latter which includes the subacromial space.
Man’s ability to perform its functions depends on four basic mechanical properties: Movement, stability, strength and consistency. Read the rest of this entry »
100 NUTRITION TIPS:
1. Eat a balanced diet that includes the proper amount of protein (15-20 percent), fat (30%) and carbohydrates (50-55%).
2. Eat lean meat, with fish rich in omega-3, whole grains, nuts, low-fat milk and a wide variety of fruits and vegetables.
3. Limit your consumption of processed and packaged foods that are high in refined sugars and fats.
4. Educate on portion sizes of your meals and in your personal daily caloric needs.
5. Calculate your daily caloric requirements.
6. Instead of eating three large meals a day eat five to six mini meals.
7. Studies indicate that small meals help you achieve and maintain a healthy weight.
8. Visit your doctor annually for a checkup. It’s the best way to keep track of your health.
9. Stay up to date on important examinations for cancer, heart disease, diabetes and other conditions threatening.
10. Do not miss your semi-annual cleanings and exams. And if you’re a woman, do not forget to realize yourself a breast self-examination monthly.
11. Chronic stress increases the risk of hypertension, stroke, heart attacks, diabetes, ulcers, muscle aches, insomnia and depression.
12. We live in a society deprived of sleep. Most individuals do not get the recommended seven to eight hours of sleep each night.
13. Your body needs sleep to rejuvenate, and when you forget about this investment, this prevents your ability to think and manage stress.
14. Your body needs sleep to maintain a healthy immune system and to moderate your emotions.
15. Recent studies have linked lack of sleep associated with weight gain or overweight. Read the rest of this entry »
The nephron is the structural and functional unit of kidney tissue, of which there are approximately one million in each of the kidneys.
The nephron is a kind of fine tube with a diameter between 20 and 30 thousandths of a millimeter and a length of 50 mm.
If you put all nephrons of both kidneys, one after another, reach an area of 100 km. The nephron has a closed end and one open and continuous with the collecting duct.
In the pole-blind, always situated in the cortex, the nephron begins with a kind of expansion that contains the so-called spheroidal glomerulus.
This device consists of 4 or 6 crammed and blood capillaries are sandwiched between an afferent and one efferent arteriole that come together in this expansion.
The glomerulus is located in a space bounded by a wall called glomerular or Bowman capsule, which includes such capillary loops and leaving a free hole to collect the urinary filtrate.
On one end, the capsule is opened as a funnel, with the second portion of the nephron tubule, which contains the primary urine. Read the rest of this entry »
Stomach pain or dyspepsia is an uncomfortable feeling in your stomach that can manifest in many ways and can be a symptom of one of the many possible anomalies of the digestive tract.
There are no specific studies on the stomach pain in the official books of medicine, since there is a specific disease or abnormality, but a series of symptoms which the level of pain and its occurrence is, in many cases, staff sensitivity each individual.
Stomach pain is a common symptom among people because it affects about 15 or 30% of the population. Though quite frequent visits to the doctor for stomach pain, most of them do not correspond to any particular case. Read the rest of this entry »