Component 1: Soc 15

Question 1

What are the 3 main functions of the cardiovascular system?

Answer 1

• Transporting oxygen, carbon dioxide and nutrients to the body in order to perform
• Helping to clot blood to prevent bleeding and start healing
• Controlong the body’s temperature

Question 2

What is the cardio respiratory system and what is cardiovascular?

Answer 2

Cardio respiratory 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

Question 3

What is vasodilation and vasoconstriction?

Answer 3

Vasodilation - when the internal diamater of blood vessels (lumen) widen to allow increased blood flow.
Vasoconstriction - when the internal diamater of blood vessels narrow to allow decreased blood flow.

Question 4

What is vascular shunting?

Answer 4

The process that increases blood flow to active areas during exercise and diverting blood away from inactive areas; achieved by vasodilation and vasoconstriction.

Question 5

What are the parts of the heart?

Answer 5

• Right atrium (top left chamber)
• Right ventricle (bottom left chamber)
• Tricuspid valve (between right atrium and ventricle)
• Left atrium (top right chamber)
• Left ventricle (bottom left chamber)
• Bicuspid valve (between left atrium and ventricle)
• Vena Cava and pulmonary artery (far and middle left vessels)
• Aorta and pulmonary vein (far and middle right vessels)

Question 6

What is the direction of blood flow?

Answer 6

• Oxygenated blood enters the pulmonary vein, through the left atrium, bicuspid valve, left ventricle and out through the aorta
• That blood reaches the rest of the body and gets deoxyenated after losing oxygen
• Deoxygenated blood enters the vena cava, through the right atrium, tricuspid valve, right ventricle and out through the pulmonary artery
• That blood reaches the lungs where it regains oxygen and becomes oxygenated