Blood, Part 1 - True Blood: Crash Course A&P

The video explores the critical role of blood in the human body, highlighting its irreplaceability and the necessity for blood donations. It explains the process of blood donation, the components of blood, and the mechanism of hemostasis. The video also covers blood types, their compatibility, and the importance of knowing one's blood type for transfusions.

What is one of the main reasons why blood cannot be manufactured?

• It is too expensive to produce.

• It requires a specific temperature to be stable.

• It is a complex tissue with living cells.

• It is made up of rare elements.

What percentage of your body weight is made up of blood?

• 12%

• 10%

• 8%

• 5%

What is the primary function of erythrocytes in the blood?

• To fight infections

• To carry oxygen and carbon dioxide

• To help with blood clotting

• To transport hormones

Which component of blood is responsible for clotting?

• Erythrocytes

• Leukocytes

• Platelets

• Plasma

What is the role of fibrin threads in hemostasis?

• To regulate body temperature

• To form a mesh that traps blood cells

• To transport nutrients

• To produce antibodies

Why are AB type individuals considered universal recipients?

• They can only receive O type blood.

• They have no antigens on their blood cells.

• They have antibodies for both A and B antigens.

• They have both A and B antigens and no antibodies for either.

What determines whether a person is Rh positive or Rh negative?

• The amount of plasma in the blood

• The presence of A and B antigens

• The presence of Rh antigens

• The number of leukocytes