Heart basics
What is the main job of the heart?
To pump blood around the body
What is the pointed bottom part of the heart called?
The apex
Which chamber receives oxygen-poor blood from the body?
The right atrium
What do heart valves do?
They keep blood flowing in one direction
What does blood deliver to the body's cells?
How many chambers does the human heart have?
Four chambers
What is the top broad part of the heart called?
The base
The right ventricle
Name two of the four main heart valves
Tricuspid, pulmonary, mitral or aortic
What does blood carry away from cells as waste?
Carbon dioxide and other wastes
What type of muscle makes up the heart?
Cardiac muscle
What are the upper chambers of the heart called?
The right and left atrium
Which chamber pumps oxygen-rich blood to the body?
The left ventricle
Which valve is between the right atrium and right ventricle?
The tricuspid valve
What is the circulation that goes from the heart to the lungs and back called?
Pulmonary circulation
What separates the left and right sides of the heart?
The septum
What are the lower chambers of the heart called?
The right and left ventricle
Which chamber receives oxygen-rich blood from the lungs?
The left atrium
Which valve controls blood leaving the left ventricle?
The aortic valve
What is the circulation that goes from the heart to the rest of body called?
Systemic circulation
Why is the heart often called a ''double pump''?
Because it pumps blood to the lungs and to the rest of the body separately
Which side of the heart has thicker walls and why?
The left side, because it pumps blood to the whole body
Describe the path of the blood through the heart starting from the body?
Body -> right atrium -> right ventricle -> lungs -> left atrium -> left ventricle -> body
Name the two main blood vessels that carry blood to and from the lungs
Pulmonary artery and pulmonary vein
Explain how the heart and blood work together to support the body
The heart pumps blood, which delivers oxygen and nutrients to cells and removes waste through circulation