Cardiovascular System and Level of Organization

What are the two main responsibilities of the cardiovascular system?

• Provides oxygen and nutrients to all our body cells (carried by the blood)

• Removes waste from body cells (carried by the blood)

• Breaks down toxins (carried by the blood)

• Produces blood

Tags

NGSS.MS-LS1-3

The right side of the heart ________________.

• receives blood from the lungs and pumps it around the body

• receives blood from the brain and pumps it to the legs

• receives blood from the body and pumps it to the lungs

• receives blood from the legs and pumps it to the brain

The heart is an involuntary muscle.

• True
• False

How many chambers does the human heart have?

• 2
• 4
• 8
• 6

Each chamber in the heart is separated by a valve. What is the purpose of a valve?

• To store excess blood

• To produce hormones
• To oxygenate the blood

• To keep the blood flowing in one direction

The two chambers on top are called _______.

• ventricles
• atria
• valves
• sinuses

The two chambers on bottom are called _______.

• valves

• atria
• ventricles

• sinuses

The blood's movement through the heart and around the body is called....

• circulation
• valve flow

• pumping
• transverse fusion

What are the two main circulatory routes in your body?

• Systemic (your body) and Pulmonary (your lungs)

• Systemic (your lungs) and Pulmonary (your body)

• Skeletal (your bones) and Digestive (your intestines)

• Nervous (your brain) and Respiratory (your lungs)

What creates the "lub-dub" sound that the heart makes?

• Opening of the heart valves
• Closing of the heart valves
• The blood losing oxygen

• The blood gaining oxygen