EXSS 175 EXAM 3 Questions with Detailed Verified Answers

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EXSS 175 EXAM 3 Questions with
Detailed Verified Answers


Question: Peripheral circulation


Ans: Blood supply for the extremities


Question: Hepatic portal circulation


Ans: Role of liver and other abdominal organs


Question: Heart


Ans: Pumps of 1 million gallons per year


Over 60,000 miles of blood vessels


Central component of CV system


Question: Mediastium


Ans: Location of heart


Anatomical region extending from the sternum to the vertebrum column,
the first rib and between the lungs


Question: Pericardium

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Ans: Membrane surrounding and protecting heart


2 main parts-fibrous pericardium and serous pericardium


Contains pericardial fluid


Question: Fibrous pericardium


Ans: Tough, inelastic, dense irregular connective tissue


Prevents overstretching, protection, anchorage


Question: Serous pericardium


Ans: Thinner, more delicate membrane


Double layer-parietal layer is fused to fibrous pericardium


Visceral layer also called epicardium


Question: Pericardial fluid


Ans: Reduces friction within heart


Secreted into pericardial cavity


Question: Epicardium

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Ans: External layer or heart wall


Visceral layer of serous pericardium


Smooth, slippery texture to outermost surface


Question: Myocardium


Ans: Middle layer of heart wall


95% of heart is part of this cardiac muscle


Question: Endocardium


Ans: Inner most layer of heart wall


Smooth lining for chambers of heart, valves, and continuous with lining of
large blood vessels


Question: Right atrium


Ans: Superior, receiving chamber


Receives blood from superior and inferior vena cava, coronary sinus


Question: Left atrium