Blood and Circulation

Front

What is the main function of red blood cells?

Back

To carry oxygen from the lungs to the rest of the body.

Front

What is the main function of white blood cells?

Back

To fight infections and protect the body from diseases.

Front

How many liters of blood does an average adult human body contain?

Back

About 5 liters.

Front

What is plasma?

Back

The liquid part of blood that carries cells, nutrients, hormones, and waste.

Front

What are capillaries?

Back

Small blood vessels that connect arteries and veins, allowing for the exchange of oxygen, carbon dioxide, and nutrients.

Tags

NGSS.MS-LS1-3

Front

What is the role of the heart in the circulatory system?

Back

To pump blood throughout the body.

Front

What are arteries?

Back

Blood vessels that carry oxygen-rich blood away from the heart.

Front

What are veins?

Back

Blood vessels that carry oxygen-poor blood back to the heart.

Front

What happens to blood when a person stands up suddenly?

Back

Blood moves from the head down to the feet due to gravity.

Tags

NGSS.HS-LS1-3

Front

What is the average number of times a human heart beats in a lifetime?

Back

About 2 billion times.