The Cardiovascular System
The Cardiovascular System transports fluid throughout the body.
The Heart 3 layers of the heart – Endocardium – Mydocardium – Visceral 4 chambers of the heart – 2 Ventricles (discharge blood) – 2 Atria (receives blood from parts of body)
Blood Vessels Carry blood towards and away from the heart 3 types of blood vessels: – Arteries Take blood away from the heart – Capillaries Responsible for exchange of chemicals and water between tissue and blood – Veins Transport blood to the heart
Blood Blood carries oxygen and nutritive elements towards the body cells What makes up blood: – White Blood Cells – Red Blood Cells – Platelets – Plasma Hemoglobin – Protein with Iron – Helps RBC’s transport oxygen
Diseases of the Cardiovascular System
Leukemia Cancer of the blood cells Too many white blood cells Abnormal, non-functional Flu-like symptoms, weakness Acute: develops quickly Chronic: develops more slowly Can affect lymphoid or myeloid cells
Sickle Cell Anemia Red blood cells become sickle-shaped Cells clog vessels and body doesn’t get enough oxygen Inherited disease
Hypoglycemia Low blood sugar Fatigue, anxiety, headaches, shakiness
Cardiomyopathy Disfiguration of the heart Usually inherited Causes difficulty breathing, fatigue
Taking care of your Cardiovascular System Increase whole grains, fruit, and vegetable intake Exercise regularly Get plenty of sleep Cut down on fats and sweets Don’t use tobacco products