Angina Pectoris and Coronary Ischemia — NEET Biology
📚 Practice ConceptAngina: It is also called 'angina pectoris'. A symptom of acute chest pain appears when no enough oxygen is reaching the heart muscle. Angina can occur in men and women of any age but it is more commonly among the middle-aged and elderly. It occurs due to conditions that affect the blood flow.
Which of the following statements are NOT correct concerning the regulation and functioning of the human circulatory system? S1: The cardiac output can be increased by both increasing the stroke volume and the heart rate, as observed in athletes. S2: Heart failure is characterized by the heart not pumping blood effectively enough, often leading to congestion of the lungs. S3: Angina pectoris is a disease primarily characterized by the deposits of calcium, fat, and cholesterol in the coronary arteries, leading to their narrowing. S4: The P-wave in an ECG represents the repolarisation of the atria, while the QRS complex represents ventricular depolarisation. S5: The opening between the right atrium and the right ventricle is guarded by a bicuspid valve, while the left side has a tricuspid valve.
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