Blood Flashcards
1
Q
What are the (3) key functions of the blood?
A
- Transport
- Regulation
- Protection
2
Q
What does the blood transport around the body?
A
- Oxygen
- Metabolic waste products from cells to elimination site (lungs CO2, kidneys nitrogenous waste)
- Hormones (from endocrine organs to target organs)
3
Q
How is the blood used for regulation?
A
- Body temperature
- pH in body tissues
- Maintaining adequate fluid volume
4
Q
How does blood protect the body?
A
- Prevent blood loss (via clotting)
- Prevent infection (via antibodies + white blood cells)
5
Q
What are the (4) main components of the blood?
A
- Plasma
- Erythrocytes (Red Blood Cells)
- Leukocytes (White Blood Cells)
- Platelets
6
Q
What does platelets do in the blood?
A
Form clots and stop or prevent bleeding
7
Q
What is blood plasma?
A
– Carries platelets, red blood cells and white blood cells around the body
- Contains antibodies (known as immunoglobulins), which fight infection
8
Q
What percentage of the blood is blood plasma?
A
Approx. 55%
