Question

ASSIGNMENTS

1. POSTING (5 pts) It is important for you to be vigilant when using medical terms. There are many that are confused. See the following list and choose one pair and post the meanings of each. You can use other terms you find on your own as well. Use the Discussion Board "Confused" or this link: Wk 12 Confused

Respiratory System

The respiratory system brings oxygen into the bloodstream, which can then transport it to all body cells. The process is known as respiration.Besides bringing oxygen to the bloodstream, the respiratory system also removes the waste product carbon dioxide from the blood and channels it outside the body. There are four steps to respiration:

     • Inhalation, or inspiration-the movement of air from the outside environment to the tiny air sacs, alveoli, within the lungs

     • External respiration-occurs when fresh air has filled the lungs and the air molecules diffuse between the alveoli and the capillaries, and carbon dioxide moves in the opposite direction.

     • Internal respiration-occurs when oxygen carried in the bloodstream diffuses into surrounding body cells, and carbon dioxide moves from the cells into the bloodstream.

     • Exhalation, or expiration-pushing of the used air and carbon dioxide out of the body. Together with inhalation, this is known as ventilation.

Asthma is a common disorder that affects the respiratory system, check out this short video (two parts) explaining asthma:

Asthma I

Asthma II

Cystic Fibrosis is another disease that is explained here: Cystic Fibrosis

The disease, tuberculosis or TB continues to pose a risk for health care providers and is described in this short video: Tuberculosis

Factoids:  

     • Chest X-ray is the most commonly performed diagnostic X-ray examination.

     • Approximately half of all X-rays obtained in medical institutions are chest X-rays.

Optional Activities:

Lung Sounds and listen to the normal lung sounds and then compare those with the "crackles" and "wheezes".

Whooping Cough Example Easy to hear "whoop" which is a classic sign.

Respiratory Distress in Infant Visualize abdominal breathing, tachypnea, and subcostal retractions.

Hyperbaric chamber This article is a bit advanced and you do not need to read it at all, but the pictures of the different types of hyperbaric chambers are pretty good. If you want to see the pictures, click on the Multimedia link on the bottom left side of the screen, scroll down below the colored text box.

Answer 1

Confused medical term

1. Cystic fibrosis

Cyst/o - cyst means urinary bladder,

Cystic - pertaining to the urinary bladder

This can be confused with the term

cyt/o - cyt means cells.

erythrocytes - red blood cells

melanocytes - black pigment cells.

2. Whooping cough

Whoop - vicious cough occur during inhalation occurs in pertussis

This can be confused with

Croup - barking cough occurs in influenza illness.

3. Subcostal retractions

Subcostal retractions - indrawing of the abdomen just below the ribcage or belly breathing.

Substernal retractions - indrawing of the abdomen just below the sternum.