Biology Biology Practice Problems Solutions Library

Heart Physiology Solutions Library

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23 solutions

Heart Physiology

Q. During the systolic phase of the cardiac cycle, the heart is _____.A. ContractingB. RelaxingC. Contracting and relaxingD. Filling with blood

Solved • Oct 4, 2018

Heart Physiology

Q. What does the QRS complex represent?

Solved • Aug 10, 2018

Heart Physiology

Q. What is the function of the papillary muscles and the chordae tendinae? 

Solved • Aug 3, 2018

Heart Physiology

Q. What is the myocardium?

Solved • Aug 3, 2018

Heart Physiology

Q. From inside to outside, list the layers of the heart wall and coverings of the heart. Be sure to list the visceral and parietal layer names as well.

Solved • Aug 3, 2018

Heart Physiology

Q. How do the structural differences between the right and left ventricles relate to the functioning of these chambers?

Solved • Jul 9, 2018

Heart Physiology

Q. (Blood Pressure Measurement) What is blood pressure? Can you list other possible ways to measure blood pressure?

Solved • Jun 25, 2018

Heart Physiology

Q. With age, the tissues making up a heart valve can lose flexibility and become stiff and narrowed while retaining their one-way closure properties. ...

Solved • Jun 22, 2018

Heart Physiology

Q. What causes the abnormal swishing or whooshing sound that is heard as blood regurgitates back into an atrium from its associated ventricle?a. pulmo...

Solved • Jun 21, 2018

Heart Physiology

Q. What is the function of the chordae tendineae and the papillarv muscles?

Solved • Jun 20, 2018

Heart Physiology

Q. What parts of the cardiac cycle do the different waves in the EKG correspond P: QRS: T:

Solved • Jun 20, 2018

Heart Physiology

Q. diastolic pressure+ (pulse pressure/3) - MAP: what is MAP an acronym for?

Solved • Jun 13, 2018

Heart Physiology

Q. What is happening during the “pause” phase when the heart is resting (relaxing)?a. Ventricles are contracting.b. Atria are contractingc. Ventricles...

Solved • Jun 12, 2018

Heart Physiology

Q. Why is blood pressure higher during systole than during diastole?a. The contraction of the heart during systole increases the blood pressure agains...

Solved • Jun 7, 2018

Heart Physiology

Q. Why do AV nodal cells NOT determine the heart rate under normal circumstances? a. They depolarize faster than all other conducting fibers. b. They ...

Solved • Jun 7, 2018

Heart Physiology

Q. Which of the following would take the longest time to regulate blood pressure?a. hormonal control of peripheral resistanceb. chemoreceptor-initiate...

Solved • Jun 7, 2018

Heart Physiology

Q. How does blood pressure in the aorta change as the heart goes through a cardiac cycle, and why?a. Blood pressure in the aorta increases during syst...

Solved • Jun 5, 2018

Heart Physiology

Q. What differentiates cardiac muscle cells from normal muscle cells? Describe briefly how this special property is harnessed in the beating of the he...

Solved • May 10, 2018

Heart Physiology

Q. How do the structural differences between the right and lift ventricles relate to the functioning of these chambers?

Solved • May 7, 2018

Heart Physiology

Q. Pulse is a direct measure ofa. blood pressure.b. stroke volume.c. cardiac output.d. heart rate.

Solved • Nov 27, 2017

Heart Physiology

Q. Blood returning to the mammalian heart in a pulmonary vein drains first into the a. left atrium. b. right atrium. c. left ventricle. d. right v...

Solved • Nov 27, 2017

Heart Physiology

Q. An electrocardiogram (ECG) provides information about ________.a. the pressure of blood in the heart chambersb. the rhythm of heart contractionsc. ...

Solved • Nov 27, 2017

Heart Physiology

Q. Which of the following is the correct sequence of blood flow in birds and mammals?a. left ventricle → aorta → lungs → systemic circulationb. vena c...

Solved • Nov 27, 2017