Hondros Bio 117 - Exam 3 Questions With Correct Answers

The bronchioles are made up of what type of muscle? - CORRECT ANS - Smooth



What neurotransmitter causes bronchodialation? - CORRECT ANS - Beta2 - adrenergic receptors



What neurotransmitters causes bronchoconstriction? - CORRECT ANS - Acetylecholine



What type of pleura lines the outside of the lungs? - CORRECT ANS - Parietal



What type of pleura lines the inside of the lungs? - CORRECT ANS - Visceral



The heart is found in what cavity? - CORRECT ANS - thoracic



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



The heart is positioned in-between what? - CORRECT ANS - The lungs



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



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



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

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



The pulmonary arteries take blood to: - CORRECT ANS - The lungs



What is the "inside layer" of the heart - CORRECT ANS - Endocardium



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



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



The pulmonary veins take blood to: - CORRECT ANS - left atrium



What type of muscle is the Myocardium of the heart? - CORRECT ANS - Cardiac muscle



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



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



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



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



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



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

,The "hardest working" and thickest chamber of the heart is... - CORRECT ANS - The left ventricle



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



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



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



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



Which of the following are AV valves?

Tricuspid

Bicuspid

Pulmonary

Aortic - CORRECT ANS - Tricuspid and Bicuspid



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



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



What wave represents "all chambers relaxed"? - CORRECT ANS - T wave



Which of the following are semilunar valves?

, Tricuspid

Bicuspid

Pulmonary

Aortic - CORRECT ANS - Pulmonary and Aortic



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



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



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



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



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



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



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



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



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



All of the coronary veins merge into where? - CORRECT ANS - Coronary Sinus