CIRCULATORY: Animal System Unit TEST Review

Question 1

What is circulatory system/ cardio vascular system?
- what does it include & do?
- maintain and how?

Answer 1

• network of organs and vessels
• includes the heart, blood vessels and blood
• transports blood, nutriesnts, oxygen and carbon dioxide, and wastes throughout the body
• supports immune ssytem through regulating body temaparature
• maintain homeostesis through the steps mentioned above

Question 2

What is homeostesis?

Answer 2

• Body’s ability to maintain a stable internal environment, despite external changes

Question 3

Plasma
- what is it
-what color?
- what % of blood’s volume?
- composed of?
- produced where?
- lifespan
– short lived?
– long lived?

Answer 3

• YELLOW straw coloured fluid
• makes up approx. 55% of blood
• 90% water
• remaining 10% made up of DISSOLVED SOLUTES including [vitamins, minerals,
  electrolytes, glucose, salts, gases]
  -Produced in cells of liver.
  -Short lived > 3-5 days
  -Long lived > months to lifetime

Question 4

Key proteins of Plasma (3)
- their functions

Answer 4

• albumin: regulates H2O in plasma (BLOOD VOLUME)
• fibrinogen: blood CLOTTING response
• globulins: carry HORMONES and ANTIBODIES