Understanding Blood Functions and Types

The video explains the crucial role of blood in the circulatory system, detailing its composition, including red and white blood cells, platelets, and plasma. It highlights blood's functions, such as oxygen transport, waste removal, and fighting infections. The importance of blood types and donation is discussed, emphasizing health implications and the need for blood transfusions. The video concludes with resources for further learning.

What is the primary function of blood in the circulatory system?

• To carry oxygen and remove waste

• To digest food

• To produce hormones

• To regulate body temperature

Which vessels carry blood away from the heart?

• Arteries

• Capillaries

• Veins

• Lymph nodes

What percentage of blood is made up of plasma?

• About 75%

• About 50%

• About 25%

• About 10%

What is the main role of red blood cells?

• To produce hormones

• To carry oxygen

• To clot blood

• To fight infections

What do white blood cells do?

• Carry nutrients

• Regulate temperature

• Fight infections

• Transport oxygen

How does blood help regulate body temperature?

• By carrying heat to the skin

• By increasing heart rate

• By absorbing sunlight

• By producing sweat

What can high blood pressure lead to?

• Better sleep

• Strokes or heart attacks

• Improved digestion

• Increased energy

Why is it important to know your blood type?

• For safe blood transfusions

• To enhance memory

• For dietary reasons

• To improve fitness

What is the rarest blood type in the United States?

• A+

• AB-

• O+

• B-

At what age can individuals start donating blood?

• 18 or 19 years old

• 12 or 13 years old

• 14 or 15 years old

• 16 or 17 years old