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Cardiovascular Concept Map Period 6 A&P Karen Tellez Salazar, RED =…
Cardiovascular Concept Map
Period 6 A&P
Karen Tellez Salazar
Major Functions of Cardiovascular System
The cardiovascular system allows the body to circulate blood, and one the main organs is the heart.
Deoxygenated blood will come through the superior vena cava or inferior vena cava
Then it will go into the right atrium
Passes through tricuspid valve
enters the right ventricle
exits through pulmonary valve
Enters pulmonary artery
goes into lungs through the right and left pulmonary artery
Gas exchange, the blood picks up oxygen
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Anatomy Of the Heart
Size: About the size of closed fist, weighs about 1 pound
Location: Sits on top of Diaphragm in the thoracic cavity between the lungs
Apex : points to left hip
Base: Slants toward right shoulder
Consists of Right atrium,right ventricle, tricuspid valve, left ventricle, left atrium, mitral valve, aortic valve, aorta superior vena cava inferior vena cava....
Layers of the Heart
Coverings Of Heart
Visceral pericardium (Inner layer)
Parietal pericardium (OUter layer)
Epicardium
Thin layer of Connective tissue
Myocardium
cardium muscle muscle, the layer that contracts
Endocarium
Simple squamous epithelium, continues with blood vessels
Blood Flow Through Heart and Body
Structural and Functional Differences Between Blood Vessels Types
Blood Vessels
Arteries
Function: Move blood
away
from the heart
Carry High Blood pressure
Structure: Elastic Fibers and circular smooth muscle
Thickest layer
The blood is pumped by force of heart
Capillaries
Function: Gas exchange (Serves the respiratory system)
Gas, waste, nutrients exchange between blood and tissue.
Structure: One cell thick
Veins
Functions: Skeletal Muscles contract to force blood back from legs
ONE way valves
When they break varicose veins form
Lumens of veins are LARGER
Use "milking" action of muscles to move blood
Cardiac Cycle and ECG
Cardiac Cycle
Cardiac Output
volume of blood that i've ventricle can pump each minute: average is about 5L per minute at rest
Stroke Volume
volume of blood ejected from one ventricle with each beat
Systole (Contraction phase)
Diastole (relaxation phase)
Heart Conduction
SA( sinoatrial ) node- pacemaker, located in the wall of the right atrium near the opening of the superior vena cava
AV ( atrioventricular) node- located in the right atrium along the lower part of the interatrial septum
AV Bundle- located in the septum of the ventricle
Purkinje fibers- located in the walls of the ventricles
ECG
P Wave
Associated with depolarization of the ventricles and repolarization of atria
QRS Complex
associated with depolarization of the ventricles of atria
T Wave
associated with repolarization of the ventricles
RED = OXYGENATED BLOOD
BLUE = DEOXYGENATED