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The Cardiovascular System Naidelin Alvarez Per. 5 - Coggle Diagram
The Cardiovascular System Naidelin Alvarez Per. 5
Functions of Cardiovascular System
circulates ocygen
removes carbon dioxide
provides nutrients
regulates body temperature
Layers of the heart
Myocardium
Cardiac Muscle
layer that contracts
Endocardium
simple squamous epithelium
continuous with blood vessels
Epicardium
Thin layer of connective tissue
Blood flow
2 separate pumps & circuits
pulmonary circulation
right atrium & ventricle
send blood to the lungs
eliminates carbon dioxide
oxygenates bolld
System circulation
left atrium & ventricle
send blood to the body/system
delivers blood to all body cells
carries away waste
Right Atrium
tricuspid valve
right ventricle
pulmonary semilunar valve
pulmonary trunk
lungs
pulmonary veins
left atrium
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Anatomy of the heart
Chambers
Atria
thin walled collecting chambers
Right Atria
Left Atria
Valves
Mitral
located between left atrium and the ventricle
Pulomnary
located in the right ventricle & the pulmonary artery
Triscupid
Located between right atrium and right ventricle
Aortic
located in the left ventricle through the aorta & the body
Blood Vessel types
Veins
blood toward heart
thinner muscle layer than arteries
no high-pressure blood
flaplike valve
prevent backflow blood
Capillaries
smallest blood vessel
gas exchange
1 layer of endothelium
connects arterioles & venues
Capillary beds
True Capillaries
directly connects an arteriole to a venule
Vascular shunt
Gas exchange by diffusion
high to low concentration
Arteries
blood away from heart
Strong, elastic
high-pressure blood
smaller as they divide
Cardiac Cycle
heartbeat is regular & rhythmic
average is about 72 beats per minute
each cycle 0.8 seconds long
subdivided into systole
ECG
visible tracing
electrical signals
3 deflections waves
P wave
Depolarization of the atria
ORS complez
Depolarization of the ventricles
Repolarization atria
T wave
repolarazation of the ventricles
Disorders
Heart Attack
Heart failure
diseases