Which of the following is the role of the pulmonary artery?
Carrying oxygenated blood from the heart to the peripheral tissue
Carrying deoxygenated blood from the lungs to the heart
Carrying oxygenated blood from the lungs to the left side of the heart
Carrying deoxygenated blood from the right side of the heart to the lungs
The Correct Answer is D
a. Carrying oxygenated blood from the heart to the peripheral tissue: This describes the function of systemic arteries, not the pulmonary artery.
b. Carrying deoxygenated blood from the lungs to the heart: This describes the pulmonary veins, not the pulmonary artery.
c. Carrying oxygenated blood from the lungs to the left side of the heart: This describes the function of the pulmonary veins, not the pulmonary artery.
d. Carrying deoxygenated blood from the right side of the heart to the lungs: Correct. The pulmonary artery carries deoxygenated blood from the right ventricle of the heart to the lungs for oxygenation.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
a. Releases hydrogen ions: Releasing hydrogen ions (H⁺) into the solution would lower the pH, making the solution more acidic. This is not the correct way to normalize a slightly acidic pH of 7.30.
b. Blinds hydrogen ions: This is likely a typographical error, and it should be "binds hydrogen ions." Binding hydrogen ions (H⁺) would reduce the concentration of free hydrogen ions in the solution, thereby raising the pH and making the solution less acidic. This is the correct mechanism to normalize the pH of 7.30 to a more neutral level.
c. Creates additional hydrogen ions: Creating additional hydrogen ions would further lower the pH, making the solution more acidic. This is not how a buffer system would normalize a slightly acidic pH.
d. Destroys excess hydrogen ions: While this option might seem correct, it is not typically how chemical buffer systems operate. Buffer systems usually bind (or release) hydrogen ions rather than destroy them.
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.
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