FREE AND STUDY GAMES ABOUT BC 2086 EXAM

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FREE AND STUDY GAMES ABOUT BC 2086 EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -65 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: In which situation would the stroke volume be the greatest?

Answer:

Venous return ^ Question 2: Blood returning from the lungs enters the heart through the:

Answer:

left atrium

Question 3: What provides nutrition to the heart muscle cells?

Answer:

Coronary blood vessels Question 4: During rapid acceleration, as a fighter pilot might experience, the pooling of blood in the extremities will

Answer:

decrease arterial blood pressure

Question 5: T or F? Cardiac action potentials proceed in the sequence: atria, SA node, bundle of His, AV node, ventricles

Answer:

False Question 6: If the end diastolic volume is 100 mls and the ejection fraction is 70% , what is the stroke volume?

Answer:

70 Question 7: Which of the following is greater regarding [] of calcium ion in the sarcoplasmic reticulum

Answer:

[] of calcium ion in the sarcoplasmic reticulum of skeletal muscle Question 8: T or F? Stroke volume of the left ventricle is larger than that of the right ventricle.

Answer:

False Question 9: In general, veins exhibit this characteristic when compared to arteries:

Answer:

thinner walls Question 10: During ventricular systole:

Answer:

Av valves closed, mitral closed Question 11: Manganese ion blocks the calcium channels in the cardiac muscle membrane. How would the presence of manganese in the extracellular fluid affect the contraction of the heart muscle?

Answer:

heart would beat less forcefully

Question 12: The difference between the systolic and diastolic pressures is called the:

Answer:

pulse pressure Question 13: As blood travels from the aorta to the capillaries:

Answer:

Resistance increases

Question 14: During the isovolumetric phase of ventricular systole, the

Answer:

AV valves & semilunar valves are close Question 15: One of the factors that controls the force of heart contraction is the

Answer:

The Initial length (preload) of cardiac fiber muscles Question 16: In which of the following situations would the end-systolic volume (ESV) be the greatest?

Answer:

when parasympathetic stimulation of the heart is increased Question 17: Which of the following best describes conditions consistent with increased contractility?

Answer:

Increased cardiac output for given end-diastolic volume Question 18: If the end diastolic volume is 200 mls, and the end systolic volume is 130 mls, What is the stroke volume?

Answer:

70 mls

Question 19: During the cardiac cycle, the

Answer:

QRS Complex of ecg precedes the increase in ventricular pressur

Question 20: During ventricular systole, the

Answer:

AV valves are closed Question 21: The sinoatrial node is the pacemaker for the heart because the SA node

Answer:

Highest rate of automatic discharge Question 22: If communication between the SA node and the AV node becomes blocked which

is most certainly affected:

Answer:

Just ventricles will contract at a slower rate

Question 23: ) Cardiac output would be greatest when

Answer:

sympathetic stimulation of the heart increases Question 24: According to Starling's "law of the heart," the cardiac output is directly related to the

Answer:

Venous return Question 25: Which of the following would be greater? regarding stroke volume when extracellular calium ion [] high or low?

Answer:

high Question 26: Myocardial contractility is best correlated with the intracellular concentration of

Answer:

Ca 2+ Question 27: The foramen ovale in the fetal heart is located in the:

Answer:

interarterial septum