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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
 http://www.youtube.com/watch?v=CWF
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
 http://www.youtube.com/watch?v=PFvXr
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=
 “silent
killer”
high blood pressure
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