Abo Flashcards
What is the mammalian circulatory system primarily considered as?
A transport system
The blood vessels are like roads and the blood is like vehicles.
What are the three main types of blood vessels?
- Arteries
- Veins
- Capillaries
What is a key structural feature of arteries?
Relatively thick wall
Includes smooth muscle and elastic fibres.
What is the function of arteries in the circulatory system?
- Withstand high blood pressure
- Alter diameter of lumen to vary blood flow
- Allow walls to stretch and recoil
What is a key structural feature of capillaries?
Very thin wall (just one cell thick)
Allows for rapid exchange between blood and tissues.
What is the primary function of capillaries?
Allow rapid exchange between blood and tissues
What is a key structural feature of veins?
Relatively thin wall with valves
Valves ensure one-way flow of blood toward the heart.
What is the function of veins?
- Blood under low pressure
- Large volume acts as blood reservoir
- Valves stop backflow
What is the most important blood type system?
ABO type system
Which blood group is known as the universal donor?
O Rh-negative
What are the types of antigens found in Group A blood?
A antigen
What are the types of antigens found in Group B blood?
B antigen
What are the types of antigens found in Group AB blood?
A and B antigens
What are the types of antigens found in Group O blood?
None
What is the Rhesus system linked to?
ABO system
What does Rh-positive blood mean?
Rhesus factor is present
Can a person with Rh-negative blood receive Rh-positive blood?
No
Fill in the blank: People with O Rh-negative can donate to all other blood types and are called _______.
universal donors
Fill in the blank: The valves in veins are not found in _______ or _______.
arteries, capillaries
True or False: Transfusions using O Rh-negative blood can happen in emergencies.
True
What are the antibodies in plasma for Group O blood?
Both A and B
