Hondros BIO 117 - Exam 3 Questions and Answers 2025
The heart is found in what cavity?
thoracic
Which layer of the heart is found on the inside?
Endocardium
The heart is positioned in-between what?
The lungs
Which layer of the heart is the thickest and is made of cardiac muscle?
Myocardium
The base of the heart is located at the...
at the 2nd rib
What fluid can be found between the visceral and parietal pericardium?
Serous fluid
1
,2
What are the layers of the heart?
endocardium, myocardium, epicardium and pericardium
The pulmonary arteries take blood to:
The lungs
What is the "inside layer" of the heart
Endocardium
Blood flows from the superior/inferior vena cava into:
right atrium
What is the thick muscular layer of the heart that is responsible for pumping blood?
Myocardium
The pulmonary veins take blood to:
left atrium
What type of muscle is the Myocardium of the heart?
Cardiac muscle 2
,3
The tricuspid valve is found:
Between the right atrium and right ventricle
What layer of the heart is directly attached to the heart?
Epicardium
The pulmonary valve is found:
Between the right ventricle and the pulmonary arteries
What layer surrounds the heart but does not directly touch it?
Pericardium
The bicuspid (or mitral valve) is found:
Between the left atrium and left ventricle
Where in layers of the heart can pericardial fluid be found?
Between the Epicardium and Pericardium
3
, 4
The "hardest working" and thickest chamber of the heart is...
The left ventricle
What is the condition and result when too much pericardial fluid accumulates between the
epicardium and pericardium?
Pericardial Effusion
Which vessel carries blood from the pulmonary capillaries to the left atrium?
pulmonary veins
What is the thick structure that runs down the middle of the heart and separates the inside of
the heart into right and left parts?
Septum
(True or False) The left side of the heart pumps blood to the lungs to receive oxygen
False
Name the blood vessels that deliver oxygenated blood to the heart tissue.
Coronary arteries
4
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