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26 Cards in this Set
- Front
- Back
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The circulatory System
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Consisits of 3 physiological processes.
1. Cardiac cycle 2. Pulmonary circulation 3. Systemic circulation |
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Cardiac Cycle comprises of 2 processes
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Diastole and Systole
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Diastole
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Relaxation phase when the heart fills with blood from the great veins.
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Systole
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Contraction phase when the blood is ejected from the heart into the aorta and pulmonary artery.
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Pulmonary circulation
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Right side pumps blood to the lungs.
Left side recieves oxygenated blood from the lungs. |
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Systemic circulation
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Left side of the heart pumps oxgenated blood to the body via the aorta.
Right side recieives deoxygenated blood from the body via the great veins |
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What are the functions of the heart?
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Generating and maintaing BP
Seperates Pulmonary and systemic circulation ensures one -way blood flow. Regulates blood supply by changing HR and SV. Right atrium produces RA and ANH hormone. |
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-------- and------- regulate blood volume and balance.
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RA and ANH
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Size of heart
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Size of you closed fist
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Shape of heart
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Upside down blunt cone
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Apex of the heart is ---------- - ---------- in the ---th intercostial space in the -------------- line.
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anterior inferior 5th mid- clavicular line
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Base of heart is located --------- ----------- within the ---nd intercostal space deep to the ----------
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posterior superior 2nd Sternum
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Mediastinum
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Middle part of the thoratic cavity.
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Pericardium
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Outside layer of the heart for anchoring and lubrication.
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Myocardium
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Middle muscular layer of the heart for contraction.
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Endocardium
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Smooth inner layer of the heart allows directional blood flow.
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Inflammation of the three layers of the heart.
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Pericarditis
Mycoarditis Endocarditis |
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What do Semiluar valves do?
What are they called?Protects back flow in the great vessels. |
Protects back flow in the great vessels.
Pulmonary valve Aortic valve |
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What are atrioventricular valves?
Waht do they do? |
Tricupid or RAV valve
Bicuspid or LAV Prents backflow within the heart. |
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Sinoatrial Node
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Located in RA
Initiates heartbeat or wave of contraction. Regulated by the ANS |
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ANS
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Autonomic Nervous System
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What is the followind system?
Sinoatrial node Artial muscle fibres Atrioventicular Node Bundle of HIS or atrioventricular (AV) bundle Purkinje fibres Verntricular muscle fibers |
Impulse generating sysem of the heart.
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HR
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Heart Rate
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SV
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Stroke Volume
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CO
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Cardiac Output
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Name the three parts of the cardiac cycle and the time.
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1. Atrial systole 0.1 sec
2.Ventricular systole 0.3 sec 3. Complete cardiac diastole 0.4 sec |
