Soc15 The Cardiovascular System

Question 1

What is the cardio-respiratory system?

Answer 1

The interaction of the heart and the lungs to supply oxygen to muscles during exercise

Question 2

What is the cardiovascular system?

Answer 2

It is to do with the heart, blood and blood vessels together.

Cardio means heart and vascular means blood vessels

Question 3

What is vasodilation?

Answer 3

When veins swell up or dilate; widening the internal diameter (lumen) of the blood vessel to allow increased blood flow

Question 4

What is vasoconstriction?

Answer 4

When veins shrink down; narrowing the internal diameter (lumen) of the blood vessel to decrease blood flow

Question 5

What is vascular shunting?

Answer 5

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

Question 6

What are the main functions of the cardiovascular system?

Answer 6

• The heart pumps oxygen around the body, to help respiration and production of energy in cells.
• Helps too clot the blood
• Controls the bodys temprature
• If you get too hot, your blood vessels get bigger (vasodilation)
• If you get too cold, your blood vessels get smaller (vasoconstriction)