PART - 2 - Unit V : CH - 15 Body Fluids and Circulation — BIOLOGY STD 11 Science — Question
Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPART - 2 - Unit V : CH - 15 Body Fluids and Circulation2 Marks
Question
Explain Angina Pectoris and Heart Shock.
✓
Answer
Angina Pectoris and Heart Shock : These are a type of constriction of the heart muscles. When the supply of $O _2$ to the heart muscles is stopped due to any reason or when very little $O _2$ is available, the muscles become weak. This leads to severe pain in the chest and heart. The cause of pain is an increase in the amount of lactic acid in the heart muscles. This condition is critical. Heart shock can occur due to various reasonssuch as a blockage in the coronary artery (thrombosis) or obstruction in the bloodstream. Factors such as obesity, smoking, high blood pressure, lack of exercise, and high cholesterol in the blood increase the risk of heart shock.
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