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# Structure and Functions of the Blood Vessels **1. Arteries → Arterioles → Capillaries** * Carry blood away * Walls of the arteries regulate the diameter of the blood vessel **2. Veins → Venules → Capillaries** * Return blood to the heart from the body organs. * Has one-way valve * Thin-walled...

# Structure and Functions of the Blood Vessels **1. Arteries → Arterioles → Capillaries** * Carry blood away * Walls of the arteries regulate the diameter of the blood vessel **2. Veins → Venules → Capillaries** * Return blood to the heart from the body organs. * Has one-way valve * Thin-walled blood vessel # Blood Pressure (Systolic and Diastolic) * **SYSTOLIC PRESSURE** - the peak of maximum pressure when ejection occurs. * **DIASTOLIC PRESSURE** - occurs when the ventricles relax. # The Systemic Circulation * Carries oxygenated blood through the left ventricle and arteries to capillaries in the body's tissues. # II. HEPATOBILIARY # Structure and Functions of the Liver * Metabolic system * Convert nutrients * Detoxifies # Liver Cells and Their Functions * **Hepatocytes** - functional cells of the liver * **Kupffer cells** - the resident macrophages