Asked by Maddy Hernandez on May 12, 2024
Verified
What is the sac that surrounds and protects the heart is called?
A) Myocardium
B) Pericardium
C) Endocardium
D) Pleural space
Pericardium
The fibrous sac that encloses the heart, providing it with protection and a fixed position within the thorax.
Myocardium
The thick, muscular layer of the heart wall responsible for the heart's contracting action.
Endocardium
The innermost layer of tissue that lines the chambers of the heart, playing a critical role in the heart's function.
- Identify the structures surrounding the heart and their functions.
Verified Answer
KF
kayla franciscoMay 15, 2024
Final Answer :
B
Explanation :
The pericardium is a tough, fibrous double-walled sac that surrounds and protects the heart. It has two layers that contain a few milliliters of serous pericardial fluid. The myocardium is the muscular wall of the heart. The endocardium is the thin layer of endothelial tissue that lines the inner surface of the heart chambers and valves. The pleural space is the space between the visceral and parietal pleura of each lung. The sac that surrounds and protects the heart is the pericardium.
Learning Objectives
- Identify the structures surrounding the heart and their functions.