Science - After Lab (Heart)

What is the main organ of the circulatory system?

• Brain

• Lungs

• Heart

• Blood Vessels

How many chambers does the heart have?

• 1
• 2
• 3
• 4

Which chamber in the heart PUMP blood to your brain?

• Right Atrium

• Left Ventricle

• Left Atrium

• Right Ventricle

This chamber of the heart RECEIVES blood returning from the body

• Right Atrium
• Right Ventricle
• Left Atrium
• Left Ventricle

Which side of the heart contains oxygen rich blood?

• the right
• the left
• atrium

• ventricle

What is the difference between blood in the right atrium and left ventricle?

• Blood in the right atrium has more oxygen

• Blood in the right atrium has more pressure

• Blood in the left atrium has more oxygen

• No difference

The purpose of heart valves is to ______

• set the pace at which the heart beats (กำหนดจังหวะที่หัวใจเต้น)

• prevent (ป้องกัน) blood from flowing backward

• oxygenate the blood as it passes through the valve
• add minerals to the blood

The first chamber that blood enters in the Heart is...

• The Atrium

• The Ventricle

• The Septum

• The Aorta

What is the function of valves in the heart?

• To keep the heart pumping

• To create pressure

• To prevent back flow of blood

• To keep the blood warm

Your heart is an involuntary muscle that is always working.

• True

• False