Exam (elaborations)
CARDIAC REVIEW CHAPTERS 19-25 (ISH) EXAM 4-- SET 3 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
- Course
- Institution
CARDIAC REVIEW CHAPTERS 19-25 (ISH) EXAM 4-- SET 3 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
[Show more]
Content preview
CARDIAC REVIEW CHAPTERS 19-25(ISH) EXAM 4-- SET 3 QUESTIONS AND
ANSWERS WITH SOLUTIONS 2024
The blood vessels in the cardiovascular system are subdivided into the - ANSWER pulmonary and
systemic circuits
Blood is carried away from the heart by the - ANSWER arteries
The left atrium receives blood from the pulmonary circuit and empties it into the - ANSWER left ventricle
The double pump function of the heart includes the right side, which serves as the ________ circuit
pump, while the left side serves as the ______ pump - ANSWER pulmonary; systemic
The major difference between the left and right ventricles relative to their role in heart function is -
ANSWER the LV pumps blood through the high-resistance systemic circulation
The great cardiac vein drains blood from the heart muscle to the - ANSWER right atrium
The visceral pericardium, or epicardium, covers the - ANSWER outer surface of the heart
endocardium - ANSWER the membrane that lines the cavities of the heart and forms part of the heart
valves
The three distinct layers of the heart wall include the - ANSWER epicardium, myocardium, endocardium
Atrioventricular valves prevent backflow of blood into the _______; semilunar valves prevent backflow
into the _________ - ANSWER atria; ventricles
Blood flows from the left atrium into the left ventricle through the ________ valves - ANSWER bicuspid,
L. atrioventricular, mitral
,When deoxygenated blood leaves the right ventricle through a semilunar valve, it is forced into the -
ANSWER pulmonary arteries
Blood from systemic circulation is returned to the right atrium by the - ANSWER superior and inferior
vena cava
Oxygenated blood from the systemic arteries flows into - ANSWER peripheral tissue capillaries
The lung capillaries receive deoxygenated blood from the - ANSWER pulmonary arteries
One of the important differences between skeletal muscle tissue and cardiac muscle tissue is that cardiac
muscle tissue is - ANSWER striated involuntary muscle
Cardiac muscle tissue - ANSWER does not require nerve activity to stimlate a contraction
The primary differences that characterize cardiac muscle cells when comparing them to skeletal muscle
fibers are - ANSWER small size, a single centrally located nucleus, the presence of intercalated discs
Blood from coronary circulation is returned to the right atrium of the heart via - ANSWER coronary sinus
The right coronary artery supplies blood to - ANSWER the right atrium, portions of the conducting
system of the heart, portions of the right and left ventricles
The correct sequential path of a normal action potential in the heart is - ANSWER SA node -> AV node ->
bundle of His -> bundle branches -> Purkinje fibers
If the papillary muscles fail to contract, the - ANSWER AV valves will not close properly
The events between the start of one hearbeat and the start of the next is called the - ANSWER cardiac
cycle
,The sinoatrial node acts as the pacemaker of the heart because these cells are - ANSWER the ones that
depolarize and reach threshold first
After the SA node is depolarized and the impulse spreads through the atria, there is a slight delay before
the impulse spreads to the ventricles. The reason for this delay is to allow - ANSWER the atria to finish
contracting
If each heart muscle cell contracted at its own individual rate, the condition would resemble - ANSWER
fibrilation
The P wave of a normal electrocardiogram indicates - ANSWER atrial depolarization
The QRS complex of the ECG appears as the - ANSWER ventricles depolarize
ECGs are useful in detecting and diagnosing abonormal patterns of cardiac activity called - ANSWER
cardiac arrhythmias
An excessively large QRS complex often indicates that the - ANSWER heart has become enlarged
The "lubb-dubb" sounds of the heart have practical clinical value because they provide information
concerning - ANSWER the action and efficiency of the AV and semilunar valves
When a chamber of the heart fills with blood and prepares for the start of the next beat the chamber is
in - ANSWER diastole
At the start of the atrial systole, the ventricles are filled to around - ANSWER 70% of capacity
The amount of blood ejected by the left ventricle per minute is the - ANSWER cardiac output
The amount of blood pumped out of each ventricle during a single beat is the - ANSWER stroke volume
, Under normal circumstances, the factors responsible for making delicate adjustments to the heart rate
as circulatory demands change are - ANSWER autonomic activity and circulatory hormones
The difference between the end-distolic volume (EDV) and the end systolic volume (ESV) is the - ANSWER
stroke volume
Parasympathetic from the vagus nerve results in - ANSWER a decrease in heart rate
Cutting the vagus nerve - ANSWER increases the heart rate
The function of the chordae tendinae is to - ANSWER anchor the AV valve flaps and prevent backflow of
blood into the atria
During ventricular diastole, when the pressure in the left ventricle rises above that in the left atrium -
ANSWER the left AV valve closes
During ventricular systole, the blood volume in the atria is _______, and the volume in the ventricle is
_______ - ANSWER increasing; decreasing
During most of the ventricular diastole - ANSWER the pressure in the L. ventricle is slightly lower than
the pressure in the L. atrium
When the pressure within the L. ventricle becomes greater than the pressure within the aorta - ANSWER
the aortic semilunar valve is forced open
The volume of blood in the L. ventricle is at its lowest when - ANSWER the AV valve opens
The dicrotic wave indicates a brief rise in the aortic pressure. The rise in pressure is due to - ANSWER the
closure of the semilunar valve
During isovlumertric contraction, pressure is highest in the - ANSWER aorta
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Performance. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $18.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
72841 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now