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Ch.12,13,14

Cardiovascular, Lymphatic, Immunity, Respiratory

TermDefinition
Cardiovascular System Consists of the heart, blood vessels, and blood.
Functions of Cardiovascular System Pumps blood through blood vessels. Transport blood from heart to arteries. Exchanges at the capillaries. Regulate blood flow.
Types of Blood Vessels (Large to Small) Arteries Arterioles Capillaries Venules Vein
Arteries Carry blood away from the heart.
Arterioles Small branches of arteries, that can contract to change the amount of blood flowing through them and the blood pressure.
Capillaries The smallest blood vessels. They branch from the arterioles. One layer epithelial cells.
Venules Small veins that drain blood from capillaries.
Veins Carry blood to the heart. The walls have valves that prevent backflow.
Normal Blood Pressure 120 (Systolic) ----------------------- 80 (Diastolic)
Myocardium The major portion of the heart. Consists of cardiac muscle and tissue.
Pericardium A thick , membranous sac that supports and protects the heart.
Septum A wall that divides the heart into left and right halves.
Atrium Upper Chamber of the Heart.
Ventricle Lower Chamber of the Heart.
Blood Pressure The pressure of blood against the wall of a blood vessel.
Aneurysm A ballooning of an artery due to the weakening of the artery possibly caused by hypertension or atherosclerosis.
Hypertension High Blood Pressure.
Lymphatic System Consists of Lymphatic vessels and organs.
Functions of the Lymphatic System Absorb excess tissue fluids and return to bloodstream. Absorb fats and transport to the bloodstream. Responsible for Production, Maintenance, Distribution of Lymphocytes. Defends body against pathogens.
Created by: Kwoodward426