A group of nursing students are studying the conduction system of the heart. The nursing students should recognize that the pacemaker of the heart is known as
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Answer and Explanation

The Correct Answer is {"dropdown-group-1":"C"}

The pacemaker of the heart is known as the sinoatrial (SA) node. The SA node is a specialized group of cells located in the right atrium of the heart. It generates electrical impulses that initiate each heartbeat and set the rhythm for the entire heart.

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Correct Answer is B

Explanation

A. Wheezing: Wheezing is a continuous, high-pitched whistling sound usually heard during expiration. It is often associated with narrowed airways, such as in asthma or chronic obstructive pulmonary disease (COPD). Wheezing occurs due to the turbulent airflow through narrowed bronchi or bronchioles and is not typically associated with pleuritis.

B. Friction rub: Pleuritis, or inflammation of the pleura, can cause a friction rub. This sound occurs when the inflamed pleural layers rub against each other during breathing. It's a grating or rubbing sound heard on auscultation and is a hallmark sign of pleuritis.

C. Stridor: Stridor is a high-pitched, harsh sound heard during inspiration and sometimes expiration. It is often a sign of upper airway obstruction, such as in croup or anaphylaxis. Stridor results from turbulent airflow through a partially obstructed or narrowed larynx or trachea.

D. Crackles: Crackles, also known as rales, are brief, discontinuous, popping sounds heard on inspiration. They can be fine or coarse and are often associated with conditions that cause fluid or secretions in the alveoli or small airways, such as pneumonia or heart failure. Crackles are not typically associated with pleuritis.

A. The atria contract toward the end of diastole and push the remaining blood into the ventricles. B. The atria contract during systole and attempt to push against closed valves. C. Atrial kick is the pressure exerted against the atria as the ventricles contract during systole. D. Contraction of the atria at the beginning of diastole can be felt as a palpitation.

Correct Answer is A

Explanation

A. The atria contract toward the end of diastole and push the remaining blood into the ventricles.

This choice is correct. During atrial systole (atrial contraction), the atria contract, pushing the remaining blood into the ventricles. This additional filling of the ventricles optimizes cardiac output.

B. The atria contract during systole and attempt to push against closed valves.

This statement is incorrect. The atria do not contract during systole; they contract during diastole (atrial systole) to fill the ventricles.

C. Atrial kick is the pressure exerted against the atria as the ventricles contract during systole.

This statement is incorrect. Atrial kick refers to the atrial contraction, not the pressure exerted against the atria.

D. Contraction of the atria at the beginning of diastole can be felt as a palpitation.

This statement is not entirely accurate. A palpitation is a sensation of rapid or strong heartbeat, which might be felt during various cardiac events, not specifically during atrial contraction at the beginning of diastole.

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A group of nursing students are studying the conduction system of the heart. The nursing students should recognize that the pacemaker of the heart is known as dropdown

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Naxlex Comprehensive Predictor Exams

A client diagnosed with pleuritis has been admitted to the hospital and complains of pain with breathing. Which of the following assessment findings should the nurse expect when auscultating a client with pleuritis?

Correct Answer is B

Explanation

A nurse is reviewing the anatomy and physiologic functioning of the heart. The nurse should recognize that which statement best describes the atrial kick?

Correct Answer is A

Explanation

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A group of nursing students are studying the conduction system of the heart. The nursing students should recognize that the pacemaker of the heart is known as
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