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Questions and Answers
Which structure forms an electrical 'insulator' in the heart?
Which structure forms an electrical 'insulator' in the heart?
- The myocardium
- The fibrous skeleton (correct)
- The fibrous rings
- The cardiac muscle fibers
The fibrous skeleton of the heart prevents the orifices of the valves from:
The fibrous skeleton of the heart prevents the orifices of the valves from:
- Becoming too narrow
- Collapsing under pressure
- Overly distended (correct)
- Blocking blood flow
What demarcates the atria from the ventricles externally?
What demarcates the atria from the ventricles externally?
- The cardiac muscle fibers
- The fibrous skeleton
- The interventricular sulci
- The coronary sulcus (correct)
Which structure provides attachment for the leaflets and cusps of the valves?
Which structure provides attachment for the leaflets and cusps of the valves?
What is the shape of the heart in three dimensions?
What is the shape of the heart in three dimensions?
How many fibrous rings make up the fibrous skeleton of the heart?
How many fibrous rings make up the fibrous skeleton of the heart?
Which structure forms connections between the fibrous rings?
Which structure forms connections between the fibrous rings?
Which sulci demarcate the right and left ventricles from each other?
Which sulci demarcate the right and left ventricles from each other?
What does the fibrous skeleton of the heart provide attachment for?
What does the fibrous skeleton of the heart provide attachment for?
The fibrous skeleton of the heart plays a crucial role in:
The fibrous skeleton of the heart plays a crucial role in:
What is the shape of the heart when viewed from an anterior or posterior view?
What is the shape of the heart when viewed from an anterior or posterior view?
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