Human Body Flashcards
What are the main parts of the circulatory system?
The heart, blood vessels, and blood.
What does the circulatory system do?
It carries food and oxygen to all parts of the body and removes waste substances that the body does not need.
Where is the heart located in the body?
The heart is inside the chest, slightly to the left, and protected by the ribs.
What is the function of the heart?
The heart pumps blood throughout the body in a process called circulation.
How long does it take for the heart to pump blood to every part of the body?
Less than a minute.
Which organ is responsible for pumping blood around the body?
The heart.
Name two organs in the digestive system.
Answers may vary (e.g., stomach, intestines).
What is the role of oxygen in the circulatory system?
Oxygen is carried in the blood to the body’s cells to keep them alive and functioning.
What protects the heart?
The ribs protect the heart.
What is circulation?
Circulation is the process of the heart pumping blood through the body.
How can you feel your heart beating?
By placing your hand on your chest or feeling your pulse.
What are blood vessels?
Pathways through which blood flows in the body.
What is the difference between oxygen and carbon dioxide in the circulatory system?
• Oxygen is carried to the cells for energy.
• Carbon dioxide, a waste product, is carried away from the cells.
Why is the heart considered a special muscle?
It works continuously and never stops, pumping blood throughout the body.
What questions can you ask to investigate the circulatory system?
- Which organ pumps blood around the body?
- Which organs are in the chest?
- How does exercise affect the pulse rate?
