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29 Cards in this Set
- Front
- Back
Anatomy 2:Exam 1: Circulatory system Heart. |
circulatory system heart.
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what 3 thigns does the circulatory system consists of?
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heart, blood vessels and blood.
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what 2 things does the cardiovascular system refer to?
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blood vessels and the heart.
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What does the pulmonary circuit do?
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brings blood to and from the lungs to the heart. for gas exchange.
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what does the systemic circuit do?
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brings blood to and from all organs of the body.
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which side of the heart supplies the pulmonary circuit?
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the right.
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which side of the heart supplies the systemic circuit?
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the left.
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which cavity is the heart located in?
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the thoracic cavity in the mediastinum.
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what is the mediastinum?
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the location of the heart in the thoracic cavity.
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what are the dimensions of the heart in inches?
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widexlongxthick 4x5x6
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how much does the heart weigh?
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less than 1 lb.
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what is the pericardium?
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a double walled sac containing the heart.
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what layer is superficial on the pericardium?
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parietal pericardium
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what layer is deep on the pericardium?
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visceral pericardium equiv to the epicardium.
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what is between the parietal pericardium and the visceral pericardium?
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the pericardial cavity.
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is the pericardial sac anchored to diaphram?
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yes.
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what type of fluid does the pericardial cavity contain? how much?
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5 to 30ml of pericardial fluid.
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does the serious layer of the pericardiac sac exude pericardial fluid?
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yes.
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what does pericardial fluid do?
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lubricates the membranes of the heart.
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what does the disease pericarditis do?
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inflames the pericardium so that each heartbeat is less lubricated and painful.
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what does the prefix peri mean?
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around.
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Formula for cardiac output CO= |
CO=Stroke Volume x Heart rate |
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what is avg resting heart rate? |
75bpm |
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what is average resting CO |
5.25 L/min |
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What is max CO? |
21 L/min to 35L/min |
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What is cardiac reserve CR? |
difference of resting CO and max CO. |
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What affects stroke volume SV? |
CVP = Central venus pressure. CTR = Contractility
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What affects CVP (central venus pressure) |
VC = Venus compliance BV = Blood volume. |
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can stroke volume be affected by preload, contractility and afterload? |
yes. |