The human heart consist of four valves. One of these is the mitral valve which connects the left atrium to the left ventricle. During diastole, it opens to allow blood from the left atrium to flow to the left ventricle. But during ventricular systole, it closes to prevent backflow of blood back to the left atrium.
Answer:
it is important to set fitness goals because you can always be healthier and being healthy and exercising makes you feel better about yourself
Explanation:
1️⃣.Primodial prevention
➡️It is the prevention of emergence or development of risk factors that never yet present. It is the behavioral change applied to discourage from adopting harmful life style such as alcoholism, smoking, eating pattern etc.
2️⃣.Primary prevention
➡️It is the action taken prior to onset of diseases that will even occurs. It includes health promotion (environmental sanitation, health education, nutrition, personal development etc) & specific protection (immunization, contraception, personal hygiene etc)
3️⃣.Secondary prevention
➡️It is the action that stop progress of disease at its incipient stage & prevent complication. It includes early diagnosis & treatement, case finding & surveillance, screening tests, laboratory investigation etc.
4️⃣.Tertiary prevention
➡️It is the all measures available to reduce impairment & disability, minimize the suffering caused by existing departure from good health & promote patient adjustment to immediate condition. It includes disability limitation & rehabilation.
I think roughly about a paragraph to conclude your essay
