Questions and Answers
What is the pericardium?
What are the two main parts of the pericardium?
Fibrous pericardium and serous pericardium
The fibrous pericardium is a delicate membrane.
False
What is the function of pericardial fluid?
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Which layer of the heart wall is the innermost layer?
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What are the three layers of the heart wall?
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Blood flows from the Right Atrium to the ______.
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What is the flow of blood through the heart starting from the Right Atrium?
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Study Notes
Pericardium
- Membrane surrounding and protecting the heart, located in the mediastinum.
- Composed of two main parts: fibrous pericardium and serous pericardium.
- Fibrous Pericardium: Tough, inelastic connective tissue preventing heart overstretching and anchoring it in the mediastinum.
- Serous Pericardium: Thinner, double-layered membrane with an outer parietal layer and inner visceral layer (epicardium), which adheres tightly to the heart.
- Pericardial cavity contains lubricating pericardial fluid, reducing friction as the heart contracts.
Layers of the Heart Wall
- The heart wall has three layers:
- Epicardium: External layer, also known as the visceral layer of the serous pericardium.
- Myocardium: Middle layer, consisting of cardiac muscle responsible for heart contractions.
- Endocardium: Inner layer lining the heart chambers and valves.
Flow of Blood
- Blood circulation sequence begins in the right atrium, flows to the right ventricle, then moves to the lungs for oxygenation.
- Oxygenated blood returns to the left atrium and is pumped into the left ventricle for distribution to the body.
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Description
Test your knowledge on the cardiovascular system with our flashcards focusing on Chapter 20. Study key terms like pericardium and understand its structure and function. Perfect for students preparing for exams in cardiovascular physiology.
