Chapter 33.2: Blood and Heart Disease. Blood -Contains plasma -90% water -10% dissolved gases,...
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Transcript of Chapter 33.2: Blood and Heart Disease. Blood -Contains plasma -90% water -10% dissolved gases,...
Blood- Contains plasma
- 90% water- 10% dissolved gases, salts,
nutrients, enzymes, hormones and waste
- Contains red blood cells- Also called erythrocytes- Carry oxygen with the protein
hemoglobin
Blood
- Contains white blood cells- Also called leukocytes- Fight off infections, toxins, and
parasites
- Contains platelets- Are cell fragments- Use plasma proteins to enable
blood clotting
Circulatory System Diseases
- High Blood Pressure- Also called hypertension- About 140/90
- Heart Disease- Atherosclerosis
- Fat creates deposits called plaques in arteries
- Can cause a heart attack- Blocked arteries disrupt blood flow
to the heart
Circulatory System Diseases- Stroke
- Occurs when the blood supply to part of the brain is disrupted, and brain cells die
Decreasing the Risk of Circulatory Disease- Cholesterol
- Is a lipid and is in many fatty foods
- Can collect into plaques on the sides of arteries
- Reducing the amount of cholesterol in your diet reduces circulatory disease