External Structure

Question 1

What is the outermost layer of the heart called?

Answer 1

Epicardium

Question 2

What is the middle layer of the heart that consists of cardiac muscle?

Answer 2

Myocardium

Question 3

What is the innermost layer of the heart called?

Answer 3

Endocardium

Question 4

What is the sac that surrounds the heart called?

Answer 4

Pericardium

Question 5

Which layer of the heart is responsible for pumping blood throughout the body?

Answer 5

Myocardium

Question 6

What is the function of the pericardium?

Answer 6

To protect and lubricate the heart

Question 7

What is the name of the tough outer layer of the pericardium?

Answer 7

Fibrous pericardium

Question 8

What is the inner layer of the pericardium that is in contact with the heart called?

Answer 8

Serous pericardium

Question 9

Which layer of the heart is directly in contact with the blood flowing through the chambers?

Answer 9

Endocardium

Question 10

What is the function of the endocardium?

Answer 10

To provide a smooth lining for the heart chambers

Question 11

What is the role of the epicardium in the heart?

Answer 11

To protect the heart and reduce friction

Question 12

What is the function of the myocardium?

Answer 12

To contract and pump blood

Question 13

Which layer of the heart is responsible for the heart’s mechanical and electrical properties?

Answer 13

Myocardium

Question 14

What is the purpose of the fibrous pericardium?

Answer 14

To anchor the heart in place and prevent overfilling

Question 15

What is the primary function of the serous pericardium?

Answer 15

To provide lubrication for the heart