Chambers
Heart Rate
Coronary Vessels
Cardiac Cycle
Regulation of the Heart Rate
100
4
How many chambers are in the heart?
100
60-80 beats per minute
What is the healthy resting heart rate of an adult?
100
The right and lef tcoronary arteries
What are the first branches of the ascending aorta?
100
the sequence of events in one heart beat
What is the cardiac cycle?
100
2 cardiac centers, accelerator center and the inhibitory center
What is the medulla of the brain contain?
200
Myocardium
What are the walls of hte cahmbers made out of?
200
Bradycardia
What is a heart rate less than 60 beats per minute?
200
Just beyond teh aortie semulunar valve
Where are the coronary arteries found?
200
Systole
What is another term for contraction?
200
send impulses to the heart along autonomic nerves
What does the accelerator center and the inhibitory center do?
300
Right and Left Atrium
What are the upper chambers of the heart called?
300
Tachycardia
What is a heart rate greater than 100 beats per minute called?
300
Coronary Veins
What do the coronary capillaries merge to from?
300
Blood pressure readings
What do the terms relaxation or diastole apply to?
300
Sympathetic and parasympathetic
What are the two divisions of the autonomic nervous system?
400
Right and Left ventricles
What are the lower chambers called?
400
30 beats per minute
What is the heart rate of an elephant?
400
the supply blood to the myocardium
What is the purpose of the coronary vessels?
400
the right and left AV valves
As more blood accumulates its pressure forces open what?
400
changes in blood pressure and oxygen level of the blood
What are stimuli for changes in the heart rate?
500
The Left
What is the atrium which recieves blood from the lungs through pulmonary veins?
500
Consistent Excercise
What makes your heart have a mote efficient pump?
500
A heart attack
What is a myocardial infarction commonly called?
500
heart sounds
What is what does the cardiac cycle also create?
500
High blood pressure
What causes the left ventricle to work harder?
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