Cardiorespiratory Unit

In a chronic smoker, oxygen availability at the cellular level is compromised due increased surfactant leading to a reduction in the surface area of which of the following structures?

• Lungs

• Bronchial smooth muscle

• Alveoli

• Trachea

Sarah has a chest x-ray that shows she has tubercles in her lungs. What does that mean?

•  She had tuberculosis in the past, but has recovered.

•  She has a dormant form of tuberculosis that could become active if her resistance is lowered.

• She has a history of an infection that is similar to tuberculosis and therefore is immune to TB.

• She has an active case of tuberculosis and is being treated with antibiotics.

What is the best treatment for mild epistaxis caused by a bump in the nose?

• Pack the nose with gauze

• Compress the nostrils, elevate and tilt the head slightly forward

• Cauterize the bleeder

• Lay flat on the back, head back, and pack the nose with tissue

Mr. Arnold is a heavy smoker, has a chronic cough, bluish tint to his skin, and a barrel chest. He MOST LIKELY suffers from:

• Emphysema

• Epistaxis

• Pleurisy

• Tuberculosis

What respiratory disorders are highly contagious?

• Emphysema and asthma

• Influenza & TB

• Sinusitis and Epistaxis

• Influenza and Epistaxis

Barbara has asthma and uses an inhaler when she starts to wheeze. The purpose of this device is to:

• contract blood vessels

• dissolve mucus

• enlarge the bronchioles

• liquefy secretions in the lungs

During cellular respiration, what happens to carbon dioxide?

• It leaves the alveoli and enters the bloodstream

• It leaves the alveoli and is exhaled from the lungs

• It leaves the cells and enters the bloodstream

• It leaves the bloodstream and enters the tertiary bronchi

In the process of breathing, during what stage does the movement of the diaphragm enlarge the thoracic cavity?

• External respiration

• Internal respiration

• Expiration

• Inspiration

Where in the respiratory tract does the exchange of oxygen and carbon dioxide take place?

• Alveoli

• Common Bronchi

• Larynx

• Trachea

If your epiglottis were to suddenly stop working, what activity could be life threatening?

• Breathing

• Coughing

• Eating

• Walking