Heart Anatomy
This wall divides the left and right sides of the heart.
What is the Septum?
This node is known as the “pacemaker” of the heart.
What is the SA (sinoatrial) node?
This circuit carries blood between the heart and lungs.
What is the pulmonary circuit?
This term refers to the relaxation phase of the heart.
What is diastole?
This is the formula for cardiac output.
Cardiac Output=Heart Rate x Stroke Volume
CO=HR x SV
These upper chambers of the heart receive blood
What are the atria?
This wave on an EKG represents ventricular contraction.
What is the QRS complex?
These vessels carry blood away from the heart.
What are arteries?
This is the measurement of the force of blood against artery walls
What is blood pressure?
If heart rate increases and stroke volume stays the same, cardiac output will do this.
What is increase?
These valves prevent backflow between the atria and ventricles.
What are atrioventricular (AV) valves?
This wave on an EKG represents atrial contraction.
What is the P Wave?
This vessel carries oxygenated blood from the lungs to the heart.
What is the pulmonary vein?
The top number in a blood pressure reading represents this.
What is systolic pressure?
HR = 75 bpm, SV = 70 mL/beat. Calculate CO (in Liters per minute).
What is 5.25 L/min?
Which side of the heart (left or right) pumps blood to the lungs?
What is the right side?
This structure carries electrical signals from the AV node to the left and right ventricles.
What is the Bundle of His?
Trace the first step: Deoxygenated blood enters the heart through this chamber.
What is the right atrium?
During ventricular systole, what is happening to pressure inside the ventricles?
What is it increases?
CO = 5000 mL/min, HR = 80 bpm. Find SV.
What is 62.5 mL/beat?
Which chamber(s) of the heart are thicker because they pump blood out of the heart?
Put in order these steps: AV node, ventricles, Bundle of His, SA node
What is SA node → AV node → Bundle of His → ventricles?
What is the last chamber blood enters before being sent to the aorta?
What is the left ventricle?
A defect causes the semilunar valves to stay slightly open during diastole. Predict what happens.
What is blood flows back into the ventricles (reducing efficiency/output)?
A patient’s heart rate decreases due to medication. To maintain cardiac output, this must happen.
What is stroke volume must increase?