Multiple Choice
The sac that surrounds the heart:
A) Is called the mediastinum.
B) Is a thick, single-walled closed sac.
C) Allows the heart to contract and expand within the chest cavity with minimal friction.
D) Has tough fibrous outer layer called the visceral pericardium and an inner, thin transparent lining called the fibrous pericardium.
Correct Answer:
Verified
Correct Answer:
Verified
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