Summary
Health involves understanding cardiovascular diseases, their causes, and treatments, as well as the impact of diet and lifestyle on health.
- Atherosclerosis — The hardening of arteries due to plaque buildup. Example: Smoking and high cholesterol can lead to atherosclerosis.
- Blood Clotting — The process where blood changes from liquid to gel, forming a clot. Example: Platelets form a mesh to stop bleeding.
- High-density Lipoproteins (HDLs) — Lipoproteins that transport cholesterol to the liver for expulsion. Example: Formed from unsaturated fats, they help decrease cholesterol levels.
- Low-density Lipoproteins (LDLs) — Lipoproteins that transport cholesterol to the arteries, increasing plaque formation. Example: Formed from saturated fats, they increase cholesterol levels.
- Antihypertensives — Medications used to lower blood pressure. Example: Effective in reducing blood pressure but may have mild side effects.
- Statins — Drugs that lower cholesterol levels and reduce plaque buildup. Example: Can cause side effects like muscle pain but help prevent CVD.
- Body Mass Index (BMI) — A measure of body fat based on height and weight. Example: A BMI over 30 indicates obesity.
- Waist to Hip Ratio (WHR) — A measure to assess obesity risk. Example: A WHR over 0.9 in males indicates obesity.
Exam Tips
Key Definitions to Remember
- Atherosclerosis
- Blood Clotting
- High-density Lipoproteins (HDLs)
- Low-density Lipoproteins (LDLs)
- Antihypertensives
- Statins
- Body Mass Index (BMI)
- Waist to Hip Ratio (WHR)
Common Confusions
- Confusing HDL and LDL roles in cholesterol transport
- Misunderstanding the difference between correlation and causation
Typical Exam Questions
- What is atherosclerosis? Atherosclerosis is the hardening of arteries due to plaque buildup.
- How do HDLs and LDLs affect cholesterol levels? HDLs decrease cholesterol levels by transporting it to the liver, while LDLs increase it by transporting it to the arteries.
- What are the advantages and disadvantages of statins? Statins lower cholesterol and prevent CVD but can cause side effects like muscle pain.
What Examiners Usually Test
- Understanding of cardiovascular disease causes and treatments
- Ability to explain the role of diet and lifestyle in health
- Knowledge of key terms and their definitions