Cardiovascular system

Definition

The cardiovascular system comprises the heart and blood vessels, responsible for circulating blood throughout the body. It plays a critical role in delivering nutrients and oxygen to tissues while removing waste products.

5 Must Know Facts For Your Next Test

1. A diet high in saturated fats and cholesterol can lead to atherosclerosis, which narrows arteries and increases cardiovascular disease risk.
2. Omega-3 fatty acids found in fish oil can help reduce inflammation and lower the risk of heart disease.
3. Excessive salt intake is linked to hypertension, a major risk factor for cardiovascular diseases.
4. Antioxidants in fruits and vegetables can help protect against oxidative stress, reducing the risk of cardiovascular issues.
5. Soluble fiber from foods like oats and legumes can help lower LDL cholesterol levels, promoting heart health.

Review Questions

• How does excessive salt intake affect the cardiovascular system?
• What role do Omega-3 fatty acids play in cardiovascular health?
• Why is soluble fiber important for maintaining a healthy cardiovascular system?

Related terms

Hypertension:

A condition characterized by consistently high blood pressure, increasing the risk of heart disease.

Atherosclerosis:

A disease where plaque builds up inside arteries, leading to reduced blood flow and increased risk of heart attack or stroke.

LDL Cholesterol:

Low-density lipoprotein cholesterol, often termed 'bad' cholesterol because high levels can lead to plaque buildup in arteries.