Which of the following structures separates the right and left pleurae?
Intercostal muscles
Pleural cavity
Mediastinum
Diaphragm
The Correct Answer is C
a. Intercostal muscles: Intercostal muscles are located between the ribs and help with breathing movements. They don't separate the pleurae.
b. Pleural cavity: The pleural cavity is the space between the pleura and the lung on each side. There isn't another pleural cavity within this space.
c. Mediastinum: The pleura are two thin membranes that line the lungs and inner chest wall. The mediastinum is the central compartment of the thoracic cavity, containing essential structures like the heart, trachea, esophagus, and major blood vessels. It separates the right and left pleural cavities.
d. Diaphragm: The diaphragm is a dome-shaped muscle separating the thoracic cavity from the abdominal cavity. While it plays a role in respiration, it doesn't directly separate the pleurae
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
a. Cricoid cartilage: This is a ring-shaped cartilage located below the thyroid cartilage, but it is not part of the glottis.
b. True vocal cords: The glottis consists of the true vocal cords (vocal folds) and the opening between them. The true vocal cords are essential for sound production.
c. "Adam's apple": This term refers to the prominent part of the thyroid cartilage, particularly in males. It is not part of the glottis.
d. Thyroid cartilage: This is the largest cartilage of the larynx and forms the front wall, but it is not directly part of the glottis.
Correct Answer is D
Explanation
a. Decreased blood pressure due to increased blood viscosity: Increased viscosity makes blood flow more difficult, raising blood pressure, not lowering it.
b. Increased blood pressure due to decreased blood viscosity: Decreased viscosity would make blood flow easier, potentially lowering blood pressure, not raising it.
c. Decreased blood pressure due to decreased blood viscosity: Same error in reasoning as b.
d. Increased blood pressure due to increased blood viscosity: Red blood cells are the main components of blood that affect its viscosity (thickness). An increased concentration of red blood cells (erythrocytosis) makes the blood more viscous. Thicker blood increases resistance to flow within blood vessels, making the heart work harder to pump blood, which can lead to increased blood pressure.
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