Categories

   Íà ãëàâíóþ   Êîíòàêòû   Îãëàâëåíèå  

Add stuff

Information
Search:
Allergies [40]
Allergy is a disorder of the immune system often also referred to as atopy.
Antidepressants [27]
An antidepressant is a psychiatric medication used to alleviate mood disorders, such as major depression and dysthymia.
Arthritis [18]
Arthritis is a group of conditions involving damage to the joints of the body.
Cancer [23]
Cancer is a class of diseases in which a group of cells display uncontrolled growth
Cardio & Blood [7]
Risk factors for heart disease: infections
Cholesterol [17]
A fat-like substance called a lipid. It is used to build cell membranes, hormones and bile acids
Diabetes [21]
The inability of the body to produce, or the inability to metabolize, the human hormone insulin; Diabetes insipidus, usually a disorder of the ...
Epilepsy [17]
Epilepsy is a common chronic neurological disorder characterized by recurrent unprovoked seizures
Gastrointestinal [13]
The digestive tract is the system of organs within multicellular animals that takes in food...
General Health [55]
The infant, child or young person’s current health condition
Herbal [16]
Herbal tea, herbal medicine
Hormonal [15]
Hormones - Proteins produced by organs of the body that trigger activity in other locations.
Men's Health [4]
For men on fitness, health, sex, caree
Pain relief [17]
Pain management is the medical discipline concerned with the relief of pain.
Skin care [17]
The skin is the outer covering of the body
Weight Loss [19]
Loss of body weight by dieting or due to various easting disorders or medical conditions.
Women's Health [12]
Find information on women's health issues, and lifestyle at the Women's Health


Fresh material

Women’s health: more about endometriosis Women’s health: more about endometriosis
→ More
The female reproductive organs: fallopian tubes and ovaries The female reproductive organs: fallopian tubes and ovaries
→ More
Fertility: foresight's success Fertility: foresight's success
→ More
Menopause problems: causes and prevention Menopause problems: causes and prevention
→ More
Women, work, and endometriosis Women, work, and endometriosis
→ More


The most popular materials

preteen vagina [5843 view]
preteen vagina → More
Barium meal x-ray examination [3293 view]
Barium meal x-ray examination → More
The female reproductive organs: fallopian tubes and ovaries [2385 view]
The female reproductive organs: fallopian tubes and ovaries → More
Women’s health: more about endometriosis [2302 view]
Women’s health: more about endometriosis → More
Women, work, and endometriosis [2258 view]
Women, work, and endometriosis → More


Awaiting moderation 17831 Article

Process of snoring: the upper airway

        PROCESS OF SNORING: THE UPPER AIRWAY

It is essential to have some familiarity with the anatomy of the upper airway to understand the process of snoring. The upper airway is generally regarded as extending from the opening of the nose and mouth to the large air passage known as the trachea. This main airway then subdivides into progressively smaller airways to facilitate delivery of oxygen to the lungs. The trachea itself is a resilient length of airway, well supported by cartilage and muscle, capable of withstanding collapse during normal breathing manoeuvres and protected to some extent from damage which can be inflicted to this susceptible section of the throat. The nasal and oral passages meet in a segment of the airway known as the pharynx with soft, fleshy and more compliant walls. It is the collapse of components of this section of the airway and subsequent vibration of the soft palate that causes the familiar sound of snoring.
The tone of the upper airway is controlled by several muscle groups. Some of these are under voluntary control such as the tongue and those muscles used for swallowing. Others have more subtle influence and although we have no voluntary control over them, they are essential for maintenance of upper airway integrity.
Inspiratory and expiratory efforts during normal breathing are accompanied by pressure fluctuations in the airway. The downward movement of the diaphragm during inspiration creates a negative pressure which sucks in air through the nose and mouth. Most of our airways are sufficiently reinforced to withstand the tendency to collapse under this pressure, with the exception of the less rigid walls of the pharynx which require an active involvement of muscles to remain open.
The process of breathing is a symphony of muscular coordination with large muscles drawing in air and expanding the chest while smaller muscles work to keep airways dilated. Other muscle groups take over for the reverse process of expiration.

*4/51/5*
GENERAL HEALTH

«Viagra no Prescription»

Âåðñèÿ äëÿ ïå÷àòè
Êîëè÷åñòâî ïðîñìîòðîâ: 444

What else is watching the people who read this article:
Preventive medicine and society. chadwick’s proposal. [430]
An ounce of prevention is worth a pound of cure [425]
What cure-minded americans can learn from prevention-minded europeans [304]
Omega-3 supplements [45]
Fish oil dosage [62]

Keywords for this page: Process of snoring: the upper airway