Human Heart
By reducing your pulse rate from 70 BPM to 60 BPM,
through cardiovascular training, how many fewer times
will your heart have to beat each day?
14,000
Label this picture on your outline as I go over
it!
BLOOD FLOW THROUGH THE HAERT
Flow of Blood Through the Heart
Effects of Exercise on The Heart
Cardiovascular Exercise (raising HR for 15-30min 3-6 times per week) will
decrease risk of hypokinetic diseases
Hypokinetic diseases are (heart disease, diabetes…) caused by…
1) Obesity
2) High Blood Pressure
3) High Cholesterol
4) Sedentary lifestyle
Effect of Cardiovascular Exercise on The Heart:
-Makes heart stronger, making ventricles larger
-Larger ventricles allows heart to pump more blood per beat.
-More blood per beat lowers resting heart rate.
****Lance Armstrong ***Heart 33% larger than that of the “average man”
What is Blood Pressure
--The force applied to artery walls…measured in arteries, not veins
--Normal Blood Pressure 120/80
--Systolic: Is the upper #...recorded when
the left ventricle contracts pumping blood
throughout body
--Diastolic: Is the lower#...recorded when
the left ventricle is relaxed filling with blood
--Dangers of High Blood Pressure:
1) Atherosclerosis
2) Stress to vessel walls … heart disease and increased risk of heart attack
3) Overworking heart (heart disease / Failure)
4) Adding stress to valves (mitral valve failure)
5) Damages other tissues in body such as vessels in eyes (glaucoma)
Effects of High Blood Pressure
What is a Pacemaker
-- A pacemaker is a small device that's placed in the chest or abdomen to
help control abnormal heart rhythms. This device uses electrical pulses
to prompt the heart to beat at a normal rate.
-- Pacemakers are used to treat arrhythmias (ah-RITH-me-ahs).
Arrhythmias are problems with the rate or rhythm of the heartbeat.
During an arrhythmia, the heart can beat too fast, too slow, or with an
irregular rhythm.
Blood Type?
-- There are 8 different types of blood and depending on what type
you have, you may be able to receive 1 or multiple “types” of
blood from others.