The nurse is discussing the blood flow pattern of the heart. The nurse should recognize which of the following as the accurate blood flow pattern of the heart?
Aorta-Right atrium-right ventricle-pulmonary vein-lungs- pulmonary artery left atrium-left ventricle
vena cava-right atrium-right ventricle-pulmonary vein-lungs- pulmonary artery-left atrium-left ventricle
vena cava→ right atrium-right ventricle-pulmonary artery-lungs- pulmonary vein-left atrium-left ventricle
Aorta-right atrium-right ventricle-lungs-pulmonary vein-left atrium-left ventricle- vena cava
The Correct Answer is C
In this sequence:
Vena cava brings deoxygenated blood from the body into the right atrium.
Blood flows from the right atrium to the right ventricle through the tricuspid valve.
The right ventricle pumps blood into the pulmonary artery to the lungs.
In the lungs, blood is oxygenated and returns to the heart via the pulmonary veins into the left atrium.
From the left atrium, blood moves to the left ventricle through the bicuspid (mitral) valve.
The left ventricle then pumps oxygenated blood into the body through the aorta.
This sequence represents the systemic and pulmonary circulation of the heart.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Xerostomia: Xerostomia refers to dry mouth, which is caused by reduced saliva production. While it can be a symptom of various conditions, it is not directly associated with facial drooping after a stroke.
B. Epistaxis: Epistaxis is a medical term for a nosebleed. It occurs due to the rupture of small, delicate blood vessels within the nose. While it can happen independently of a stroke, it is not directly related to facial drooping caused by a stroke.
C. Dysphagia: Dysphagia refers to difficulty in swallowing, which can occur after a stroke due to muscle weakness, including the facial muscles. Facial drooping on one side can be indicative of stroke-related muscle weakness and can contribute to difficulties in swallowing.
D. Rhinorrhea: Rhinorrhea is the medical term for a runny nose, where the nasal cavity is filled with a significant amount of mucus. It is usually caused by various factors such as allergies, infections, or irritants. Rhinorrhea is not directly associated with facial drooping after a stroke.
Correct Answer is B
Explanation
A. AV node - SA node - bundle of His - bundle branches:
This sequence is incorrect. The SA node (sinoatrial node) initiates the electrical impulse in the heart, followed by the AV node (atrioventricular node), bundle of His, and then the bundle branches.
B. SA node - AV node - bundle of His - bundle branches:
This sequence is correct. The electrical stimulus of the cardiac cycle starts at the SA node, which is the natural pacemaker of the heart. From the SA node, the impulse travels to the AV node, then to the bundle of His, and finally to the bundle branches, which distribute the impulse to the ventricles, causing them to contract.
C. Bundle of His - AV node - SA node - Erb's Point:
This sequence is incorrect. Erb's Point is a point on the chest where heart sounds S2 and S3 can be heard most distinctly.
D. AV node - SA node - bundle of His - Erb's Point:
This sequence is incorrect. The AV node comes after the SA node in the electrical conduction system of the heart. Erb's Point is not a part of the normal cardiac conduction pathway; it is a location for auscultation on the chest.
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