HONDROS BIO 117 Exam 3 – Complete Study Guide and Practice Questions

HONDROS BIO 117 - EXAM 3
WITH VERIFIED QUESTIONS
AND ANSWERS GRADED A+ 2026
UPDATE!!
The heart is found in what cavity? - answer-thoracic



Which layer of the heart is found on the inside? - answer-Endocardium



The heart is positioned in-between what? - answer-The lungs



Which layer of the heart is the thickest and is made of cardiac muscle? - answer-
Myocardium



The base of the heart is located at the... - answer-at the 2nd rib



What fluid can be found between the visceral and parietal pericardium? - answer-
Serous fluid



What are the layers of the heart? - answer-endocardium, myocardium, epicardium and
pericardium



The pulmonary arteries take blood to: - answer-The lungs



What is the "inside layer" of the heart - answer-Endocardium



Blood flows from the superior/inferior vena cava into: - answer-right atrium

,What is the thick muscular layer of the heart that is responsible for pumping blood? -
answer-Myocardium



The pulmonary veins take blood to: - answer-left atrium



What type of muscle is the Myocardium of the heart? - answer-Cardiac muscle



The tricuspid valve is found: - answer-Between the right atrium and right ventricle



What layer of the heart is directly attached to the heart? - answer-Epicardium



The pulmonary valve is found: - answer-Between the right ventricle and the pulmonary
arteries



What layer surrounds the heart but does not directly touch it? - answer-Pericardium



The bicuspid (or mitral valve) is found: - answer-Between the left atrium and left
ventricle



Where in layers of the heart can pericardial fluid be found? - answer-Between the
Epicardium and Pericardium



The "hardest working" and thickest chamber of the heart is... - answer-The left ventricle



What is the condition and result when too much pericardial fluid accumulates between
the epicardium and pericardium? - answer-Pericardial Effusion



Which vessel carries blood from the pulmonary capillaries to the left atrium? - answer-
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? - answer-Septum



(True or False) The left side of the heart pumps blood to the lungs to receive oxygen -
answer-False



Name the blood vessels that deliver oxygenated blood to the heart tissue. - answer-
Coronary arteries



Which of the following are AV valves?



Tricuspid



Bicuspid



Pulmonary



Aortic - answer-Tricuspid and Bicuspid



When do the atria relax (diastole)? - answer-After the P Wave



The coronary arteries deliver ______________________ to the heart tissue. - answer-
Oxygenated blood



What wave represents "all chambers relaxed"? - answer-T wave



Which of the following are semilunar valves?



Tricuspid

, Bicuspid



Pulmonary



Aortic - answer-Pulmonary and Aortic



The second heart sound is heard at all what wave? - answer-T wave



Name the blood vessels that drain deoxygenated blood from the heart tissue. - answer-
Coronary Veins



The amount of blood pumped by our heart in one minute is called what? - answer-
Cardiac Output



Why do we have valves in our heart? - answer-To prevent back flow



The sympathetic nervous system would cause our heart rate to: - answer-Increase



The coronary veins drain ________________________ from the heart tissue. - answer-
Deoxygenated Blood



The parasympathetic nervous system would cause our heart rate to: - answer-Decrease



The closing of which set of valves causes the "first heart sound"? - answer-AV Valves



Which cranial nerve is the largest parasympathetic nerve and goes to the heart (amount
other organs - answer-CN X (Vagus Nerve)