Soc 15 Flashcards
(6 cards)
What makes up the cardiovascular system?
The cardiovascular system is formed by our heart and blood vessels. Cardio means the heart and vascular mean blood vessels.
What are the 3 main functions of the cardiovascular system?
1) Transports oxygen, carbon dioxide and nutrients.
2) It helps blood clot using platelets.
3) It controls the body’s temperature.
How does the body transport oxygen, carbon dioxide and nutrients using the cardiovascular system?
The heart pumps oxygen around the body, which is used in respiration and the production of energy in the cells. The system also carries away waste products such as carbon dioxide and deliveries nutrients and water.
How does the body help blood clot using the cardiovascular system?
Blood contains platelets which help clots our blood and form scabs which help stop bleeding and healing. In some sports small cuts are common and so this is important.
How does the body control the it’s temperature using the cardiovascular system?
If you get too hot the blood vessels close to the skin get bigger (vasodilation). Blood is diverted to the surface to allow more heat to radiate out. If you become too cold your vessels get smaller (vasoconstriction) to avoid heat being lost.
Define cardiovascular fitness.
The ability to exercise the whole body for long periods of time.
