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Cardiovascular System Salem Ceja Period 1 - Coggle Diagram
Cardiovascular System
Salem Ceja Period 1
Cardiovascular system structure function
Two pump transport system
Left gets oxygenated blood and pumps to the body called systemic circuit
Right side deoxygenated blood, which is called the pulmonar y cicuit
•Disorders of the cardiovascular system
Pericarditis- Inflammation of heart which causes excessive fluids to flow, and compresses heart beat.
Angina Pectoris Defficient blood delivery to myocardium = pain
Myocardial infarction caused byt coronary blockage.
Arrhythmias-irregular heart murmurs, uncoordinated contractions, Fibrillation = inefficient pumps
Heart Murmurs Valve problems indicated by abnormal sounds in heart.
Tachycardia-abnormally fast heart rate(>100bpm)
Bradycardia-Fibrillation caused by lower than 60 bpm
Congestive Heart Failure(-
progressive condition, Consistent above 60mm blood pressure and very low carbon dioxide levels
Varicose veins-dilated pain caused by leaky valves, usually hereditary.
Edema-abnormalUInusualfluid
Cardiac system cycle and Electrocadiogram
Cardiac
Sinoatrial node
Impulses = 75x minute, pacemaker of heart
Atrioventricular node
In inferior interventricular septum
Atrioventricular Bundle
In superior interventricular septum, only electrical connection between atria and ventricles
Bundle Branches
Send impulse to apex, located on both sides of septum
Subendocardial network
Purkinje Fibers; Complete pathway through interventricular septum into apex and ventricular walls
Electrocardiogram
P wave
Depolarization of SA node and atria
QRS complex
ventricular depolarization and atrial repolarization
T wave
ventricular repolarization
PR Interval
beginning of atrial excitation to beginning of ventricular excitation
ST segment
entire ventricular myocardium depolarized
QT segment
beginning of ventricular depolarization through ventricular repolarization
Compare and Contrast Blood Vessels Types
Arteries
Structure
Lumen, tunica intima, tunica media, tunica externa
Function
Muscular arteries: deliver blood to body organs
Elastic arteries: act as pressure reservoirs that expand and recoil as blood is ejected from heart
Arterioles(resistance arteries): control flow into capillary beds via vasodilation and vasoconstriction of smooth muscle
Veins
Structure
Thick Lumen and tunica intima, thin tunica media, thick tunica externa
Function
Carry blood toward the heart
Capillaries
Structure
Thin intima
Function
exchanges gases, nutrients, wastes, hormones,between blood and interstitial fluid
Heart Anatomy
Chambers
Left Atrium
oxygenated blood goes through pulmonary veins
Left Ventricle
left atrium receives oxygenated blood.
Right Atrium
super/inferior vena cava receive deoxygenated blood.
Right Ventricle
receives deoxygenated blood from right atrium
Valves
Mitra valve
Protects from backflow into left atrium from left ventricle
Aortic Semilunar Valve
prevents left atrium backfloiw
Triscupid valve
prevents right atrium backflow.
Pulmonary Semilunar Valve
prevents right ventricle backflow from pulmonary artery.
Heart Layers
Covering: Pericardium: double walled sac that surrounds heart
Parietal layer lines internal surface of fibrous pericardium
Three layers of heart
Epicardium
visceral layer of serous pericardium
Myocardium
circular or spinal bundles of contractile cardiac muscle
Endocardium
innermost layer; is continuous with endothelial lining of blood vessels
Blood flow of body
Right Atrium
Tricuspid Valve
Right Ventricle
Pulmonary Semilunar valve
Pulmonary Artery
Lungs(Pulmonary circuit)
Pulmonary Veins
Left Atrium
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