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BMS 300 EXAM 3 QUIZ QUESTIONS AND VERIFIED ANSWERS
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BMS 300 EXAM 3 QUIZ QUESTIONS AND VERIFIED ANSWERS...
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BMS 300 EXAM 3 QUIZ QUESTIONS ANDVERIFIED ANSWERS
Diastole is considered the filling phase of both the right and left ventricles
during the cardiac cycle. - ANSWER True
At point C of the pressure-volume curve (PV curve): - ANSWER -Opening of
the pulmonary valve-openings of aortic valve-ventricular pressure exceeds
aortic/ pulmonic pressure
The stroke volume is dependent on: - ANSWER -End diastolic volume-End
systolic volume
Well-trained athletes may at times have a greater cardiac output than in non-
athletes. Why? - ANSWER An increased end-diastolic volume increases the
stroke volume
The long-term (months to years) elevations in the pressure needed to open the
pulmonary valve would serve to increase the thickness of the myocardium in
the: - ANSWER Right ventricle
What would the flow route be in the closed system? - ANSWER Artery,
arteriole, capillary, venule, vein
Where is the exchange of gases occurring? - ANSWER Capillary
, What is true about coronary sinus? - ANSWER -It is carrying deoxygenated
blood
-It empties to the right atrium
The main resistance of flow generally occurs at the wall of the vessel. -
ANSWER True
Coronary artery disease results from blocking (occluding) the coronary artery.
The dangerous effects of narrowing the coronary artery result because blood
flow in this vessel: - ANSWER -Decreases with the fourth power of the radius
of the coronary vessel, r 4
-Decreases as the narrowing increases the resistance to flow
What are the characteristics of a general Cardiomyocyte? - ANSWER -Is a
mononuclear cell
-Has desmosomes and gap junctions
The pacemaker establishes the rate and rhythm of the heartbeat. - ANSWER -
True
From the 1. in the atrium, the electrical signal spreads to the 2. From there, the
3. splits into right and left bundle branches that may further subdivide into 4. -
ANSWER 1. Sinoatrial Node
2.Atrioventricular Node
3.Bundle of His
4.Purkinje Fibers
The cytoskeleton of cardiac muscles is made up of: - ANSWER -Z-Lines
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