1. List the major organs in the respiratory system. 2. Describe ( in detail) the

Question

1. List the major organs in the respiratory system. 2. Describe ( in detail) the normal function of this body system. 3. Identify and explain about 3 common diseases that affects this body system. Describe diagnostic testing used to detect the disease and treatment modalities for each. 4. List and describe 2 changes that are relevant to the body structure and function of this body system in children: 5.List and describe 2 changes that are relevant to the body system structure and function of this body system in the elderly. 6. What is one weird, gross,strange, or interesting thing about this system. cblackboard.com/webapps/ prcourse ids 138329 7&course; sejd:-29717,1&content;_id=-13401 en s, and diag to the Fawortes Bar folder import from another browser import favorites Question Completion Status QUESTION 1 LUist the major organs in this body system For the toolbar. press ALT+F10 (PC) QUESTION 2 Describe (in detal) the normal function of this body system

Explanation / Answer

1. Major organs in the repiratory system are:

2. The normal function of the respiratory system is the exchange of gases between the blood and the environment. The air is inhaled which is rich in oxygen through nose which travels down the nasal cavity and conducted through pharynx, larynx and trachea. larynx connects pharynx and trachea. The pharynx is common for both food and air so during swallowing of food, the laryngeal opening glottis is closed by a flap called epiglottis and food is prvented to enter the larynx and the respiratory system. As the air enters the trachea from larynx it travels down to left and right primay bronchi which then divide into secondary, tertiary and so on bronchi into terminal bronchioles. terminal bronchioles subdivide into respiratory bronchioles which then subdivide into alveolar ducts at the end of which are thin, irregular and vascularized pouches called alveoli. This are the bags which fill with inhaled air and where the gas exchange takes place.

2. Deoxygenated blood from the body is supplied to the alveoli by pulmonary arteries which has more carbon dioxide and less oxygen. The partial pressure of carbon dioxide in deoxygenated blood is 45mmHg and of oxygen is 40 mm Hg. At the alveolus interface, the diffusion takes place due to difference partial pressures of two gases. In the alveolus sac the pO2 is 100 mm Hg becasue of which the oxygen diffuses from the alveolus to the capillaries carrying deoxygnated blood increasing the partial pressure of oxygen in these capillaries. On the other hand, carbon dioxide's partial pressure in alveolus is 40 mm Hg and in arteries 45 mm Hg; the carbon dioxide moves out of the blood into the alveolus and is finally expired. These capillaries then merge from different alveolus to form pulmonary veins which carry this now oxygenated blood into the left atrium and left ventricles which then supplies all the tissues with this oxygenated blood.

3. Asthma: is a chronic lung disease characterized by inflammation in airway. Inflammation makes the airway swollen and very sensitive to a variety of stimuli. Airway obstruction may be due to smooth muscle spasms in the walls of smaller bonchi and bronchioles, edema of the mucosa of th airways, increased mucus secretion and or damage to the epithelium of the airway. Symptoms include difficult breathing, coughing, wheezing, chest tightness, tachycardia and fatigue.

Diagnosis:

Lung function test: lung function test can be performed using spirometry before and after using a brochiodilator. Sprometry measures how deep and fast you breath. Another test call peak flow measure how fast you can breath out.

Treatment:

Long-term control medications reduce the inflammation in your airways these include inhled corticosteroids, leukotriene modifiers, beta agonists and combination inhalers. Quick-relief inhalers or bronchodilators open swollen airways to ease breathing; these include atrvovent or ipratropium, oral and intravenous corticosteroids.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.