Flow of blood through the heart: 1st deoxygenated blood enters through the 2nd 3rd-Valve 4th 5th Valve 6th 7th 8th-Gas exchange occurs at 9th Oxygenated blood re-enters heart 10th 12th 11th - Valve 13th - Valve vena cava R. Atrium R. Ventricle [Choose ] Choose R. Atrium Systemic Circuit, Dropping off oxygen to the cells Pulmonary Artery pulmonary veins Systemic Semi Lunar Valve L. Ventricle Systemic Circuit, Dropping off CO2 to the cells Prystine Semi Lunar Valve Mitral Valve aortic Veins R. Ventricle Tricuspid Valve Pulmonary Semi Lunar Valve vena cava Aortic Semi Lunar Valve Pulmonary super solar valve L. atrium Pulmonary trunk Lungs [Choose ] [Choose ] [Choose ] Proctorio is sharing your screen. Stop sharing Hide

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Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.