The Heart

What is the first stage of the cardiac cycle?
Diastole
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How many pumps does the heart have?
2
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What do the valves in the heart ensure happens?
That blood is pushed in one direction and does not return in the direction that it came
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What is the name for the 'heart strings'?
Chordae Tendinae
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Which side of the heart has more pressure build up?
Left
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What are the valves called in between the atria and the ventricles?
Atrio-ventricular Valves
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What does SAN stand for?
Sino Atrial Node
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Which side of the heart recieves deoxygenated blood?
Right
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Why is there lower pressure in the right side of the heart?
Because the blood has less distance to travel
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Where does the Aorta take the blood?
Away from the heart and around the body
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What does ECG stand for?
Electrocardiogram
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What does an ECG monitor do?
It monitors the heart, to observe how the heart is functioning
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What does the Purkyne tissue do?
Carries a wave down the septum
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Where is the apex situated?
At the bottom tip of the heart
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What is stroke volume?
The amount of blood pumped out of the left ventricle in one cardiac cycle
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What is cardiac output?
The amount of blood pumped out of the left ventricle in one minute
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What is the formula for cardiac output?
Cardiac output = stroke volume x heart rate
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What is tachycardia?
A fast irregular heart rate
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What is bradycardia?
A slow irregular heart rate
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Why is the heart myogenic?
The heart can make itself contract and does not need any stimulation from a nerve
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What is the name for the valve that allows blood to pass through to the pulmonary artery?
Pulmonary Valve
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What is myocardial infarction?
Heart Attack
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Where does an impulse in the heart first start?
Atrio-centricular Node (AVN)
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After the AVN where is the impulse sent?
The Sino Atrial Node (SAN)
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What is the Ventricular Spetum?
The muscle between the left and right ventricles
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Which vein brings deoxygenated blood into the heart?
The Vena Cava
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What is the plural form for Vena Cava?
Vena Cavae
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What are the two parts of the Vena Cava called?
Inferior and Superior
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Roughly how many times will the cardiac cycle repeat itself every minute?
75
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What phase would the atria be in, if the ventricles were in systole?
Diastole
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What phase would the ventricles be in, if the atria were in Diastole?
Systole
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How can heart rate be measured?
By counting how many pulses are felt in an artery per minute
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What part of the body can a pulse be measured?
Anywhere, where there is an artery next to a bone
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Why should you not use your thumb to measure your pulse?
It has its own pulse
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Which artery is the pulse usually measured when using the fingers?
The Radial Artery
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What is the measurement of heart rate?
Beats per minute
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What other instruments can be used to measure the heart rate?
Blood Pressure Monitor or Stethoscope
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Whre can pulse also be measured?
The carotid arterty (neck) or the brachial artery (upper arm)
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What are the units of measurement for stroke volume?
Cm3
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What are the units of measurement for cardiac output?
dm3 min-1
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Other cards in this set

Card 2

Front

How many pumps does the heart have?

Back

2

Card 3

Front

What do the valves in the heart ensure happens?

Back

Preview of the front of card 3

Card 4

Front

What is the name for the 'heart strings'?

Back

Preview of the front of card 4

Card 5

Front

Which side of the heart has more pressure build up?

Back

Preview of the front of card 5
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