Please enable JavaScript.
Coggle requires JavaScript to display documents.
Cardiovascular System Luz Ponce Period 5 (Blood Flow throughout body ( …
Cardiovascular System Luz Ponce Period 5
Major Functions of Cardiovascular System
oxygen
hormones function
Transportation of nutrients
Anatomy of the heart
2 Ventricles: Thick pumping chambers
Right ventricle
Left ventricle
Interventricluar spetum: septeration of legt and right sides of the heart.
2 Atrias:thin wall
right atrium
left atrium
Atrioventricular Valves
Right:Tricuspid
Left:Biscupid or mitral
Semilunar valves:after ventricles.
Pulmonary:comes before lungs
Aortic:comes before aorta
Layers of the Heart
Covered by two layers called the Pericardium
Inner Layer:Visceral Pericardium
Outer Layer:Parietal Pericardium
3 layer wall
Myocardium-Cardiac/layer that contracts
Endocardium:simple squamous,continuous with blood vessels
Epicardium-thin layer of C.T.
Blood Flow throughout body
Deoxygented blood enters from superior vena cava or inferior vena cava.
After entering the heart the blood enters the right atrium
After the right atrium the blood passes through the tricuspid valve into the right ventricle
Once entering the right ventricle the blood passes into the pulmonic valve and the enters the pumlonary artery
After entering the pulmonary artery the blood travels into the lungs where it collects oxygen
Now the oxygenated blood travels back into the heart through the pulmonary veins. (left)
After entering the pulmonary veins the blood travels into the left atrium and passes through the mitral valve
After passing t he Mitral Valve the blood flows through the left ventricle which pumps the blood into the aortic valve
After entering the aortic valve the blood flows into the aorta which sends the blood to the upper and lower parts of the body.
Major Arteries and Veins of the body
Pulmonary Artery:Blood travels from artery into lung to collect oxygen
Pulmonary veins: Oxygenated blood travels back into heart by the pulmonary vein
Middle cardiac vein:Drains part of the right and left ventricle.
posterior interventricular artery:supplies the posterior third of the interventricular septum.
great cardiac vein:returns deoxygenated blood back into the left ventricle.
Superior vena cava:allows blood to travel into the heart from the upper body
Left subclavian artery:carry blood up the the brain from the base of the neck.
Left Common Carotid artery:supplies blood to the left side of the heart
structional and functional differences between blood vessel types
Capillaries:small blood vessels
Venules:"small veins"
Arterioles:"small arteries"
Veins:Return blood towards the heart
Arteries: carry blood away from the heart
Cardiac cycle and the ECG
ECG: amplifying electrical changes that occur during heart muscle depolarization.
Excitation: nerve fiber stimulates the muscle fiber
Relaxation;Muscle fiber relaxes/no longer produces tension
Excitation-contraction coupling:activation of the myofilaments
Contraction:muscle fiber develops tension
disorders of the Cardiovascular system
Mononucleosis:increase in one type of white blood cells in the bloodstream
Blood Poisoning-Septicemia: deadly infection in the bloodstream
Leukemia: cancer of the blood
Thrombocytopenia
Anemia:Low iron
Hemophilia: failure of blood clot
Carbon Monoxide Poisoning:binds hemoglobin