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Circulatory 10

The hollow muscular organ Heart
sends oxygenated blood away from the heart Artery
Exchanges nutrients with cells. Capillaries
Gets blood from all body tissues. -Oxygen poor- Veins
Brings oxygen to all cells. Important in immune and endocrine system. Blood
relatively pure, into the carotid arteries taking blood to the head (and brain) Oxygenated Blood
Cardiology Blood with a low O2 saturation relative to blood leaving the lungs Deoxygenated Blood
Double walled membrane sac, encloses the heart Pericarium
Prevents friction when heart beats Pericardium
Outter layer of heart, inner layer of pericardium sac Epicardial
Consists of cardiac muscle, middle and thickest layer of heart Myocardium
Inner lining of heart, direct contact with blood pumping; smooth Endocardium
Both upper chambers of heart, gets blood from all parts of the body. Blood vessels come into the heart Atria
Both lower chambers of the heart, pumps blood to all body tissue. Ventricles
Seperating wall, located betweem right and left artia. Septum
Narrow tip of the heart. Apex
Carries deoxygenated blood to upper half of the body. Superior vena cava
Largest artery in the body, extends from left ventrical to abdomen. Aorta
Carries blood to lower half of the body. Inferior vena cav
Carry blood from heart to lungs. Pulmonary artery
One of four vessels that carries blood from the lungs to left atrium. Pulmonary vein
Connection between artery and veins. Capillaries
Blood must have fresh supply of oxygen. Artery
Receives waste products from blood. Veins
Tightens, pumps blood in a sequence. Contraction
Releases, and expands, pumps blood in correct sequence. Relaxation
nerve stimulate myocardium, determines rate and regulatory heart beat. Electrical Impulses
1st and 2nd heart sound, makes heart sounds when closing valves. Lubb/Dubb
Measures pressure by the pressure against the walls of the vessels. Blood Pressure
Occurs when ventricle contracts, highest pressure agianst walls. Systolic
Happens when ventricle relaxes, low pressure against walls. Diastolic
130/84 mm. Hg Normal Adult Pressure
Created by: A Herrington