Coronary Arteries and Heart Disease Flashcards
What arteries supply oxygenated blood to the heart?
The coronary arteries supply oxygenated blood to the heart.
What is atheroma?
The buildup of lipid plaque inside arteries.
Why are coronary arteries more susceptible to plaque buildup?
Because of their high workload, high blood pressure, and small diameter with many branches, which put stress on the endothelial lining.
What types of lipids contribute to plaque buildup?
Saturated fats and low-density lipoprotein (LDL) cholesterol, also known as “bad” cholesterol.
What is an occlusion?
An occlusion is a blockage or reduction of blood flow in an artery due to plaque buildup.
What is coronary heart disease (CHD)?
CHD is a condition where plaque buildup in the coronary arteries restricts blood flow to the heart, leading to increased blood pressure and possible heart damage.
How does plaque buildup affect the heart?
It increases blood pressure, forces the heart to work harder, and can damage cardiac muscle by limiting oxygen supply.
What complications can arise from advanced plaques?
They can rupture and release particles that cause strokes, blood clots, and embolisms.
What are lymph capillaries?
Lymph capillaries are tiny vessels found in capillary beds that collect excess fluid from tissues.
What happens to blood plasma that leaks from cardiovascular capillaries?
It becomes interstitial fluid, which bathes tissues and aids in gas and material exchange.
What is lymph
a collection of the extra fluid that drains from cells and tissues in your body and isn’t reabsorbed into your capillaries
How does lymph move through the body?
Lymph moves passively through vessels using body movements and muscle contractions.
How does the lymphatic system prevent backflow?
One-way valves prevent lymph from flowing backward.
What are lymph nodes
Lymph nodes are structures that filter lymph and contain white blood cells to remove debris and pathogens.
How is lymph returned to the cardiovascular system?
Through the Collecting Duct
