Soc 15: The Structure Of The Heart Flashcards
Cardio-respitory system
The interaction of the heart and lungs to supply oxygen to muscles during exercise
Cardiovascular
To do with the heart, blood and blood vessels together
Vasodilation
When veins swell or dilate; widening of the internal diameter (lumen) of the blood vessel to allow increased blood flow
Vasoconstriction
When veins shrink down; narrowing of the internal diameter (lumen) of the blood vessel to decrease blood flow
3 functions of the cardiovascular system
Transports oxygen, carbon dioxide and nutrients
Helps clot blood
Controls the body temperature
Vascular shunting
Your muscles need more blood for movement and so move away from the organs to the muscles
Arteries
Arteries go away from the heart