Problem 136 - Objective Biology for NEET

Question

It is often referred to as atherosclerosis, it affects the blood vessels that supply blood to the heart muscles. It is caused by the deposition of Ca, fat, cholesterol and fibrous tissues making the lumen of arteries narrow (a) CAD (b) \(\mathrm{SCID}\) (c) Blue baby (d) myocarditis

Step-by-Step Solution

Answer

The term that matches the provided description is (a) CAD.

Step 1 Identification

Identify the term that matches with the description. CAD stands for Coronary Artery Disease which is characterized by damage or disease in the heart's major blood vessels. SCID stands for Severe Combined Immunodeficiency, a rare genetic disorder characterized by the disturbed development of functional T cells and B cells caused by numerous genetic mutations. Blue baby refers to a baby with a blue complexion from lack of oxygen in the blood due to a congenital defect. Myocarditis is inflammation of the heart muscle.

Step 2 Analysis

Analyze the content of the description. The disease in the description affects the blood vessels that supply the heart muscle, and it is caused by the deposition of calcium, fat, cholesterol and fibrous tissues, leading to the narrowing of arterial lumen. This description matches the pathology of atherosclerosis, an underlying process leading to coronary artery disease (CAD).

Step 3 Conclusion

Correlating the given disease description and understanding of the disease processes, it can be concluded that most apt answer for the given description is CAD which stands for Coronary Artery Disease.

Key Concepts

Atherosclerosis

Atherosclerosis is a condition where the arteries become narrowed and hardened due to an excessive buildup of plaque around the artery wall. This plaque buildup is composed of various substances circulating in the blood, including calcium, fatty matter, cholesterol, and a cellular waste product. The process begins when the endothelium, or inner lining of an artery, becomes damaged. High blood pressure, smoking, or high cholesterol can contribute to this damage. Once the artery is damaged, these substances begin to accumulate at the site of injury in a process called plaque formation.

This can lead to serious problems, including the potential of plaque rupture, which can result in a heart attack or stroke. Risk factors for atherosclerosis include an unhealthy diet, lack of exercise, being overweight, smoking, and having a family history of early heart disease. Lifestyle changes, medications, and sometimes surgery can help reduce the risk of atherosclerosis-related problems.

• Excessive buildup of plaque can lead to coronary artery disease (CAD).
• Risk factors include lifestyle choices and genetic predisposition.
• Prevention and treatment are possible through both lifestyle modification and medical intervention.

Cardiovascular Diseases

Cardiovascular diseases (CVDs) are a group of disorders of the heart and blood vessels and include coronary heart disease, cerebrovascular disease, and conditions such as high blood pressure, arrhythmia, and heart failure. CVDs are the leading cause of death globally. The majority of these deaths are due to complications from atherosclerosis.

Prevention of CVD largely involves addressing risk factors through the promotion of a healthy diet, regular physical activity, and avoidance of tobacco use and excessive alcohol consumption. Regular health checks are important as they allow risk factors, such as high blood pressure and cholesterol, to be detected and managed early.

• CVDs encompass a broad range of heart and vascular conditions.
• Lifestyle modifications and medical treatment can prevent or control CVDs.
• Regular health checks are crucial for early detection and management.

Pathology of Heart Disease

The pathology of heart disease refers to the study and diagnosis of the diseases affecting the heart. Coronary artery disease (CAD) is a common type of heart disease, occurring due to the narrowing of the coronary arteries which supply blood to the heart muscle. This condition is primarily caused by atherosclerosis. If left untreated, CAD can lead to chest pain, shortness of breath and, ultimately, heart attacks.

The pathology includes understanding the changes occurring within the heart as a result of diseases and the mechanisms by which these diseases operate. Diagnostic methods for heart disease include blood tests, EKGs, stress testing, and imaging such as echocardiograms and coronary angiograms. Interventions may include lifestyle modification, medication, and surgical procedures such as angioplasty or bypass surgery.

• CAD is a significant part of the pathology of heart disease.
• Understanding the mechanisms and effects of heart disease is critical for effective treatment.
• Various diagnostic tools and interventions are used to manage heart diseases.