Science 1.3
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Describes the movement of blood and lymph around the body which permits nutrient distribution, waste removal, communication and protection
Cardiovascular system / circulatory system
The two integrated circulatory systems
Closed circulatory system Open lymphatic system
A double loop system consisting of thick walled arteries, thinner walled veins and capillaries
Closed circulatory system
Transports blood away from the heart
Arteries
Transports blood to the heart
Veins
A network that connects arteries to veins in tissues
Capillaries
System that circulates and filters interstitial fluid between cells and eventually drains into the circulatory system
Open lymphatic system
Carries deoxygenated blood from the right ventricle to the lungs and returns oxygenated blood to the left atrium
Pulmonary loop
Carries oxygenated blood from the left ventricle to the body, returning deoxygenated blood to the right atrium
Systemic loop
Names of the major arteries
Coronary artery Common Carotid artery Subclavian artery Brachiocephalic artery Thoracic aorta Pulmonary artery
Major veins
Internal jugular Brachiocephalc
The two cycles of contractions of the heart
Systole and diastole
The contraction of the heart muscle
Systole
The relaxation of the heart muscle
Diastole
The cause of the atrioventricular valves to close makes “Lub” sound
Ventricular systole
Ventricles are filled with blood during this cycle as semilunar valves close to prevent blood from falling back into the ventricles making the dub sound
Atrial systole
Contains nutrients, hormones and antibodies and other immune proteins
Blood plasma
Contains hemoglobin and transports oxygen from lungs to the rest of the body
Red blood cells
Cells that are divided into two main lineages: leukocytes and lymphocytes This is critical to the immune system
White blood cells
A subtype of white blood cells that protects the body against disease
Leukocyte
White blood cell found in a lymph.. which moves through the lymphatic system to fight disease
Lymphocyte
Carries deoxygenated blood from the right ventricle to the lungs. Only artery that carries deoxygenated blood
Pulmonary artery
Blood vessels that supply Oxygenated blood and nutrients to the myocardium of the heart
Coronary artery
Only vein that carries oxygenated blood; carries blood from the lungs to the heart into the left atrium
Pulmonary vein