caption: the cardiovascular problem heart rate causes the amount of the heart beats
exif: {"Image DocumentName": "Factors Affecting Stroke Volume", "Image ImageDescription": "Heart Rate. Cardiac output directly proportional to heart rate. Relationship exists up to 160 to 180 beats/min. Filling time for ventricles insufficient at higher rates.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}