lungsChapter 12
Atrium: upper chamber, receive blood entering the heart, blood flows from atria to ventricles, receives blood from the body that is low in oxygen and high in carbon dioxide
Ventricle: Lower chamber, pump blood out of the heart
Blood vessels:
Blood pressure: the force with which blood pushes against the walls of your blood vessels
Blood contents: plasma, red blood cells, white blood cells, platelets
what affects the respiratory system can help our heartSome cities are so polluted that fashion shows are presenting gas masks as a normalized accessory. This is a fashion show in Beijing.
On the way to the lungs, air passes through nose, pharynx, larynx, trachea, and bronchi cigarettes, how are they made?popcorn lungheart and lungs are a teamdifferent types of exerciseAerobic Exercise: Activity that raises your breathing and heart rate Anaerobic Exercise: Intense physical activity that lasts for a few seconds, weights, push ups, sprinting Types of muscle contractionsIsometric exercise: muscles contract but very little movement takes place, muscles become stronger Isotonic exercise: contracting and relaxing muscles through the full range of a joint's motion, pull-ups, barbells Isokinetic exercise: muscles contract constantly, sometimes machines help with the exercises in physical therapy sometimes, the greatest risk TO OUR HEALTH comes from our pipeline system
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