Health And Fitness Flashcards
What affect does low exercise have on artery walls
It makes them become harder which means there’s limited vasodilation and vasoconstriction
What is a heart attack
Lack of oxygen supplies to blood due to a blood clot
What factors cause high blood pressure
Smoking
Obeisity
Lack of sleep
High salt in diet
High fat
What is pulmonary circulation
The right side of the heart receives deoxygenated blood from muscles and pumps it into lungs
What is systemic circulation
The left side of the heart receives oxygenated blood from lungs and pumps it to muscles
What is the structure of a vein
Wide lumen with a pocket valve to stop back flow
What is vascular shunting
Blood vessels going to working muscles vasodilate and blood vessels going to non working muscles vasoconstrict
What side of the heart has thicker walls
Left side
What is the order for the cardiac cycle
Cardiac diastole
Sa node fires
Impulse causes atrial systole
Impulse is delayed be AVN to allow complete contraction of atria
It’s then passed to the bundle of his
Then passes along the purkinje fibres
Causing ventricular systole
What is the valve in the left side of heart
Bicupside
What is the valve on the right side of the heart
Tricuspid
