this is a chronic condition where the heart is unable to pump blood efficiently leading to fluid buildup in the lungs and other parts of the body
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Cardiovascular System Exam Questions Pdf

1. What is a chronic condition where the heart is unable to pump blood efficiently, leading to fluid buildup in the lungs and other parts of the body?

Correct answer: A

Rationale: Heart failure is the correct answer. It is a chronic condition characterized by the heart's inability to pump blood efficiently, resulting in symptoms like fluid buildup in the lungs and other parts of the body, shortness of breath, fatigue, and fluid retention. Cardiomyopathy (choice B) refers to diseases of the heart muscle, but it is a broader category that includes various conditions affecting the heart muscle. Pericarditis (choice C) is the inflammation of the pericardium, the sac surrounding the heart, and aortic stenosis (choice D) is a condition where the aortic valve narrows, restricting blood flow from the heart.

2. What is the ability of cardiac cells to respond to an impulse by contracting?

Correct answer: A

Rationale: Excitability is the correct term that describes the ability of cardiac cells to respond to an impulse by contracting. Excitability refers to the cell's ability to respond to stimuli and generate an action potential. Choice B, Contractility, is incorrect as it refers to the ability of cardiac cells to contract after receiving a stimulus, not the response to the impulse itself. Choice C, Rhythmicity, is incorrect as it pertains to the heart's ability to contract rhythmically without external stimulation. Choice D, Conductivity, is incorrect as it refers to the ability of cardiac cells to transmit an impulse from cell to cell, not the direct response to the impulse by contracting.

3. Which condition is characterized by the lungs becoming scarred and stiff, leading to difficulty breathing and inadequate oxygen intake into the bloodstream?

Correct answer: A

Rationale: The correct answer is A, Pulmonary fibrosis. Pulmonary fibrosis is a lung disease where lung tissue is damaged and scarred, resulting in breathing difficulties and decreased oxygen transfer into the bloodstream. Cystic fibrosis (B) is a genetic disorder primarily affecting the lungs and digestive system, not causing lung scarring. COPD (C) includes conditions like chronic bronchitis and emphysema but doesn't specifically involve lung scarring. Tuberculosis (D) is a bacterial infection that primarily affects the lungs but doesn't cause lung tissue scarring and stiffness as seen in pulmonary fibrosis.

4. What is a condition where the heart's electrical system malfunctions, leading to an irregular heartbeat or arrhythmia?

Correct answer: A

Rationale: The correct answer is A, Arrhythmia. Arrhythmia refers to an irregular heartbeat caused by the malfunction of the heart's electrical system. Bradycardia (choice B) is a condition characterized by a slow heart rate, while Tachycardia (choice C) is a condition characterized by a fast heart rate. Ventricular fibrillation (choice D) is a life-threatening arrhythmia where the heart's lower chambers quiver erratically.

5. What is a condition where the blood pressure in the arteries is consistently too high, increasing the risk of heart disease and stroke?

Correct answer: A

Rationale: Hypertension, also known as high blood pressure, is a condition where the force of the blood against the artery walls is consistently too high. This increased pressure can lead to serious health issues such as heart disease and stroke. Hypotension (choice B) refers to low blood pressure, which is not the correct term in this context. Diabetes (choice C) and hyperlipidemia (choice D) are also serious conditions but are not specifically characterized by consistently high blood pressure.

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