What does cardiac output measure?
Blood pumped into a ventricle in one minute
Blood pumped into the atria in one minute
Blood pumped by each ventricle in one minute
Blood pumped out of an atrium in one minute
The Correct Answer is C
A. Blood pumped into a ventricle in one minute: This describes venous return but not cardiac output.
B. Blood pumped into the atria in one minute: Cardiac output measures blood leaving the heart, not entering the atria.
C. Blood pumped by each ventricle in one minute: Cardiac output is the amount of blood ejected by each ventricle in one minute. It is calculated by multiplying stroke volume (the amount of blood ejected per beat) by heart rate.
D. Blood pumped out of an atrium in one minute: This describes atrial function but is not related to the definition of cardiac output.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Increased surface tension: This would decrease ventilation as it increases the force needed to expand the lungs.
B. Increased lung compliance: Compliance refers to how easily the lungs can expand. Increased compliance makes it easier for the lungs to inflate, thereby increasing ventilation.
C. Fewer alveolar sacs: Having fewer alveolar sacs reduces the surface area for gas exchange, which would likely reduce ventilation efficiency.
D. More airway resistance: Increased airway resistance makes it harder to breathe, so it would reduce ventilation rather than increase it.
Correct Answer is B
Explanation
A. Brain and aortic arch: The aortic arch contains peripheral chemoreceptors, but the central chemoreceptor is in the medulla.
B. Medulla of the brain stem: Central chemoreceptors located in the medulla monitor the levels of carbon dioxide (via pH changes) in the cerebrospinal fluid to regulate breathing.
C. Carotid arteries and brain stem: The carotid arteries contain peripheral chemoreceptors, but not central chemoreceptors.
D. Carotid arteries and aortic arch: These locations house peripheral chemoreceptors, not central ones.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.