Cardiorespirato ry Endurance

Your Heart, Lungs, and circulation  Aerobic Activity- continuous activity that requires large amounts of oxygen  Strengthens heart  Strengthens lungs  Working muscles more efficient at using oxygen

Your circulatory system  Circulatory system- consists of heart, blood and blood vessels  yxn0qDEU yxn0qDEU

The heart  Main organ  Right side pumps blood to lungs  Left side pumps oxygen rich blood to the rest of the body  Hemoglobin-iron rich compound in the blood that helps carry the oxygen  Stroke volume- amount of blood pumped per beat of the heart

Blood vessels  Arteries- vessels that carry blood from the heart to the major extremities  Capillaries- smaller; deliver oxygen and other nutrients to individual cells  Veins-deliver blood back to heart

Respiratory system  Respiratory system-the body system that exchanges gases between your body and the environment  Main organ lungs  Diaphragm- a muscle found between the chest cavity and abdomen

Process of respiration

Benefits of respiratory endurance  Increases stroke volume  Lowers resting heart rate  Muscles involved with breathing function more efficiently  More you condition aerobically the more strenuous physical activity you are able to do

Long term benefits  Cardiorespiratory endurance-the ability of the body to work continuously for extended periods of time.  Have increased energy  Less stress  Feel better

LESSON 2  PROBLEMS AND CARE OF YOUR HEART AND LUNGS

Risk factors  Heart disease, lung cancer, and other illnesses of the circulatory system and respiratory system are known as  Lifestyle diseases- diseases that are the result of certain lifestyle choices  Risk factors  Inactivity,overweight,smoking, foods high in fat

Cardiovascular disease  CVD- any medical disorder that affects the heart or blood vessels.  Leading cause of death 950,000 a year  Atherosclerosis-a condition in which a fatty deposit called plaque builds up inside arteries, restricting or cutting off blood flow

Heart Attack  Each year 1 million have heart attacks.  ½ people die from the heart attack  Blockage of a blood vessel that feeds the heart muscle  Tightness in chest. Tingling in left arm, abnormal breathing, no circulation

Sudden Cardiac Death  Young and old people  The loss of blood supply to the heart muscle during a heart attack may cause the heart to stop beating, referred to as cardiac arrest  8WR8wo 8WR8wo

Stroke  Stroke- when blood flow to a person’s brain is interrupted or cut off entirely by the blockage of an artery  Usually results in damage to the brain and can leave a person paralyzed  Signs  Sudden numbness especially on one side,confusion, trouble seeing, severe headache, dizziness

Peripheral vascular disease  A cardiovascular disease that occurs mainly in the legs and, less frequently, the arms.  During exercise  Risk factors cigarette smoke and type 2 diabetes

Hypertension  Hypertension= high blood pressure  “silent killer”

Diseases of the lung  Lung cancer and emphysema  Of the 200,000 deaths approximately half are directly linked to cigarette smoking  Emphysema- a disease in which the small airways of the lungs lose their normal elasticity, making them less efficient in helping to move air in and out of the lungs.

Care of systems  Best treatment is prevention  Activities that can keep your heart and lungs healthy.  Avoiding tobacco  Maintaining healthy weight  Eating right  Medical checkups