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Mammalian heart

heart of mammel bio11 unit 2

QuestionAnswer
How many times can a heart beat in 2 minutes? 140 beats
How long does blood have to flow? 160,000km
Average life expectancy. 80 years
Name the four chambers of a mammalian heart and in order. Right Atrium, Right ventricle, Left Atrium, Left Ventricle
What is the path of blood from the heart to lungs. Superior Vena Cava/Inferior Vena Cava, Right Atrium, Right Ventricle, Right Pulmonary Artery, Lungs, Pulmonary Vein, Left Atrium, Left Ventricle, Aorta
What is blood pressure? [units?] Measure of pressure in the arteries, [mmHg] millimeters of Mercury.
What are the 2 types of blood pressure? Systolic and Diastolic
Describe systolic blood pressure. From ventricles contracting = higher pressure
Describe diastolic blood pressure. From ventricles relaxing = lower pressure
What is the average blood pressure reading? systolic BP / diastolic BP = 120mmHg / 80mmHg
What is the weirdest word I know in bio? Purkingje Fibres of the heart wall muscles.
How does a heart beat work? The sinoatrial node in the muscles tissue of the right atrium stimulates the atria to contract and relax rhythmically.
Created by: bioger
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