CrashCourse Heart Video

What is the primary function of the heart?

• To produce hormones

• To filter waste from the blood

• To maintain blood pressure and circulate blood

• To generate emotions

Where is the heart located in the human body?

• On the left side of the chest

• Directly in the center of the chest

• On the right side of the chest

• In the lower abdomen

What do the heart's valves do?

• Ensure blood flows in one direction

• Produce blood cells

• Filter the blood

• Connect the heart to the brain

What is the purpose of the pulmonary circulation loop?

• To cool down the blood

• To exchange carbon dioxide for oxygen in the lungs

• To remove oxygen from the blood

• To supply the heart with nutrients

What could high diastolic blood pressure indicate?

• High overall blood pressure

• Dehydration

• Low blood volume

• Low oxygen levels