Cardiorespiratory 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 http://

www.youtube.com/watch?v=CWFyxn0qDEU

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

http://www.youtube.com/watch?v=PFvXr8WR8wo

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