heart questions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | two pumps
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| Which chamber receives blood from the superior and inferior vena cavae? | show 🗑
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| Which heart chamber receives blood from the pulmonary veins? | show 🗑
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| Which heart chamber pumps unoxygenated blood out the pulmonary trunk | show 🗑
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| show | left ventricle
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| Purkinje fibers | show 🗑
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| AV node | show 🗑
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| show | Convey(s) the impulse down the interventricular septum
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| show | Link(s) between the SA node and AV node
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| show | Set(s) the pace for the entire heart
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| show | Electrical link(s) between atria and ventricles
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| show | SA node
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| show | AV node
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| Action potentials generated by the autorhythmic cells spread to the contractile cells through what structures in the membrane? | show 🗑
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| show | potassium
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| show | fast calcium
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| show | voltage-gated potassium channels
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| show | the flow of positive ions from adjacent cells
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| What does the ECG wave tracing represent? | show 🗑
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| What does the QRS complex represent in the ECG wave tracing? | show 🗑
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| Contraction of the atria results from which wave of depolarization on the ECG tracing? | show 🗑
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| Which part of the intrinsic conduction system delays the impulse briefly before it moves on to the ventricles? | show 🗑
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| Isovolumetric relaxation and ventricular filling (two phases of the cardiac cycle) take place during __________. | show 🗑
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| show | Most blood flows passively into the ventricles through open AV valves.
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| show | Pressure in the atria would be greater than the pressure in the ventricles.
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| show | greater pressure in the aorta than in the left ventricle
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| show | isovolumetric contraction, ventricular ejection, isovolumetric relaxation
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| show | AV valves only
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| show | diastole
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| show | the left ventricle to the left atrium
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| The closing of the left AV valve occurs near the beginning of | show 🗑
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| The majority of ventricular filling occurs while the ventricles and atria are in what state(s)? | show 🗑
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| Which of the following most correctly describes end-diastolic volume? | show 🗑
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| show | while the AV valve is open
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| Heart valves are in what state during isovolumetric contraction? | show 🗑
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| The decrease in left ventricular pressure at the end of ventricular systole causes __________. | show 🗑
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| Calculate the cardiac output if heart rate (HR) is 90 beats per minute, stroke volume (SV) is 110 ml/beat, end diastolic volume (EDV) is 140 ml, and end systolic volume (ESV) is 30 ml | show 🗑
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| An increase in sympathetic stimulation of the heart would increase stroke volume by increasing __________. | show 🗑
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| End systolic volume (ESV) | show 🗑
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| Heart rate (HR) | show 🗑
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| Venous return (VR) | show 🗑
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| show | the volume of blood per minute pumped out by one ventricle
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| End diastolic volume (EDV) | show 🗑
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| Stroke volume (SV) | show 🗑
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| Which of the following would increase cardiac output to the greatest extent? | show 🗑
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| Which of the following would increase heart rate? | show 🗑
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| How would an increase in the sympathetic nervous system increase stroke volume? | show 🗑
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| show | increased end diastolic volume
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| How would a decrease in blood volume affect both stroke volume and cardiac output? | show 🗑
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| show | SA Node
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| Action potentials generated by the autorhythmic cells spread to the contractile cells through what structures in the membrane? | show 🗑
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| In order to cause cardiac muscle contraction, the contractile cells must also depolarize. What causes the depolarization of the contractile cells? | show 🗑
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| When threshold is reached at the SA node (an autorhythmic cell), what channels open causing further depolarization of the membrane? | show 🗑
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| What do we call the amount of blood pumped out of each ventricle in one minute? | show 🗑
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| show | Stroke volume
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| Increased parasympathetic stimulation has what effect on heart rate (HR)? | show 🗑
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| show | increased sympathetic activity and increased preload
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| show | Increased preload
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| show | pulmonary circuit
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| show | capillaries
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| show | epicardium
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| Which chamber of the heart receives blood from the superior and inferior venae cavae? | show 🗑
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| show | right ventricle
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| show | ascending aorta
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| Which valve is found between the right atrium and the right ventricle? | show 🗑
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| show | ascending aorta
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| A large vein that opens into the right atrium and brings in venous blood from the heart tissue is the __________. | show 🗑
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| Which of the following is called the cardiac pacemaker? | show 🗑
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| show | Purkinje fibers
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| The QRS complex on the ECG represents __________. | show 🗑
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| show | calcium
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| What is the term for contraction of a heart chamber? | show 🗑
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| Which of the following occurs during the first phase of ventricular systole? | show 🗑
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| What produces the “lubb” of the first heart sound? | show 🗑
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| show | stroke volume
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| show | It increases heart rate.
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| show | increased stretch on the ventricle
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| Which of the following statements about autonomic tone is FALSE? | show 🗑
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Created by:
Charon514