Bio 669 Quiz 4 Questions And Answers With Verified
Solutions With 100% Correct Answers Latest Update
2024/2025.
Thromboangiitis obliterans (Buergers disease) is an autoimmune condition that is - ANSWER
strongly associated with smoking
Which of the following is not a systemic disease that is associated with Raynaud's Phenomenon? -
ANSWER Congestive heart failure
Rheumatic fever, and subsequent heart complications in 10% of individuals is left untreated arises
from - ANSWER group a strep pharyngitis
which of the following is not a factor in determining preload - ANSWER total peripheral
(systemic) resistance
which of the following statement is incorrect - ANSWER prostacyclins, which are diminished
by NSAIDs, are vasoconstrictors
which of the following are incorrect regarding the isometric phase of the cardiac cycle? - ANSWER
the atria are contracting
afterload - ANSWER the resistance of movement of blood from the left ventricle to the aorta
Natriuretic peptides act by - ANSWER stimulates the release of Na+ thus increasing urine
output from the kidneys
pericardium - ANSWER the double-layered membrane surrounding the heart that functions to
minimize friction from heart movement
prinzmental angina - ANSWER transient ischemia of the myocardium that occurs
unpredictably
superior vena cava syndrome - ANSWER progression venous distention of the head and upper
extremities resulting from the growth of a cancerous on the right mainstem bronchus
the most common cause of an aneurysm - ANSWER atherosclerosis with hypertension
an atherosclerotic area that has ruptured is termed - ANSWER complicated plaque
the pr interval represents - ANSWER the onset of atrial systole to the onset of ventricular
systole
the circumflex artery off of the left coronary artery - ANSWER left atrium and ventricle
the structure that connects the leaflets/cusps and helps to prevent prolapse of the AV valves is the -
ANSWER chordea tendineae and papillary muscles
a mitral valve prolapse would be heard during - ANSWER ventricular systole
, hypertensive crisis - ANSWER rapidly progressive hypertension with a diastolic pressure of
140 or more
intermittent claudication is - ANSWER a sign of peripheral artery disease
a patient presents with a fever, diffuse microemboli presenting as petechial lesions, painful lesions on
the fingertips and what looks like non tender bruising on both hands is most indicative of which
disease - ANSWER infective endocarditis
stroke volume - ANSWER none of the above are true
t wave relates to __________ and shortly precedes the closure of the _______ valves - ANSWER
ventricular repolarization, SL valves
how much of the oxygen carried by hemoglobin in the blood is actually transferred by the myocardium
- ANSWER 70 - 75 percent
The key regulator determining if a muscle, such as cardiac muscle, contracts or not is the presence of -
ANSWER Ca++
A thrombus is a blood clot that remains attached to a vessel wall. Which of the following is NOT one of
the main factors as proposed by Virchow? - ANSWER obesity
a 20 year old presents with complaints of fever, pink macular rash and diastolic murmur should be
investigates for - ANSWER rheumatic fever
refractory period - ANSWER the decrease of inability to generate action potential due to
hyperpolarization or continued closure of activation gates
all of the following antihypertensive agents are appropriate for first line treatment expect -
ANSWER beta blockers
stemi would most likely present with - ANSWER marked ST elevation
which area of the myocardium is affected by a STEMI - ANSWER transmural (entire wall
thickness)
the disorder of the myocardium that expands overall intracardiac volume and leads to heart failure -
ANSWER dilated (congestive) cardiomyopathy
which of the following is a correct statement regarding baroreceptor reflex activity on the heart -
ANSWER a drop in blood pressure would result in reflex to increase heart rate, contractility, and
peripheral resistance
the development of atherosclerotic plaques involve the formation of foam cells which are best
described as - ANSWER macrophage that engulf oxidized LDL
which of the following statements regarding compliance and elasticity is correct - ANSWER a
decrease in compliance such as the aorta means that it is stiffer and less easy to expand
the isovolumetric contraction phase of the cardiac life cycle occurs - ANSWER when the AV
valves are closed
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