During the gas exchanges occurring in the lungs:

Carbon dioxide diffuses into the blood and oxygen diffuses into the alveoli

Oxygen diffuse into the blood and carbon dioxide diffuses into the alveoli

Both oxygen and carbon dioxide diffuse from the alveoli into the blood

Both oxygen and carbon dioxide diffuse from the blood into the alveoli

Answer and Explanation

The Correct Answer is B

A. Carbon dioxide does diffuse into the blood from the alveoli, but oxygen diffuses into the blood from the alveoli, not into the alveoli.
B. Oxygen diffuses from the alveoli into the blood where it binds to hemoglobin in red blood cells, while carbon dioxide diffuses from the blood into the alveoli to be exhaled.
C. Both oxygen and carbon dioxide do not diffuse from the alveoli into the blood at the same time. Only oxygen moves into the blood, and carbon dioxide moves in the opposite direction, from the blood to the alveoli.
D. While carbon dioxide moves from the blood into the alveoli, oxygen moves in the opposite direction, from the alveoli into the blood, so this answer is incorrect.

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Correct Answer is C

Explanation

A. The internal exchange of gases occurs at the tissue level, where oxygen is delivered to cells and carbon dioxide is removed. The diaphragm is not involved in this process.
B. Exhalation involves the relaxation of the diaphragm, which causes the lungs to compress and air to be expelled from the lungs.
C. During inhalation, the diaphragm contracts and moves downward, creating more space in the chest cavity, which allows the lungs to expand and air to flow in.
D. The external exchange of gases occurs in the lungs, where oxygen is transferred into the blood and carbon dioxide is removed, but it is not directly linked to diaphragm contraction.

A. Over the eyes B. In the cheeks C. Over the ears D. Above the eyebrows

Correct Answer is B

Explanation

A. Pain over the eyes is associated with sinusitis in the frontal sinuses (located above the eyes), not the maxillary sinuses.
B. The maxillary sinuses are located in the cheeks, so pain related to maxillary sinusitis is typically felt in this area.
C. Pain over the ears is not typically associated with sinusitis; it is more common with ear infections or other middle ear conditions.
D. Pain above the eyebrows is typically related to frontal sinusitis, not maxillary sinusitis.

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During the gas exchanges occurring in the lungs:

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The diaphragm contracts during the phase of respiration called:

Correct Answer is C

Explanation

A client with a prolonged upper respiratory infections seeks medical attention for symptoms of a low-grade fever, poor appetite and headache. If the client has sinusitis in the maxillary sinuses, where will she most likely report feeling pain?

Correct Answer is B

Explanation

A medication used to relax the airways in the lungs to increase air flow is:

Peripheral chemoreceptors that regulate breathing are located in the:

The C in COPD stands for:

A nurse is caring for a client who must take a liquid cough syrup and several other oral tablets at the same time. What nursing action is most appropriate when administering both types of oral medications to this client?

Oxygen moves from the lungs into the blood via:

The location of the central chemoreceptor is:

The phase of pulmonary ventilation in which air is expelled from the alveoli is:

Orthopnea means: