Oxygen moves between the respiratory system and the circulatory system when it transfers from ____ to _____.

During gas exchange, oxygen moves into the blood, and carbon dioxide moves into the alveoli.

Which best describes the function of a diaphragm?

Which of the parts of the circulatory system brings blood from a part of the body to the heart?

True or false: veins carry blood away from the heart and arteries carry blood toward the heart.

How does an open circulatory system transport blood?

Lungs contain millions of

What goes into the stomata?

Water is released from the stomata during:

Which two tubes allow air into your lungs?

Oxygen gets into your blood through the:

How many chambers do you have in your heart?

Choose the parts of the circulatory system.

Which are parts of the circulatory system?

Which are parts of the respiratory system?

What type of circulatory system transport blood through open space around organs?

Which of the following are NOT part of the respiratory system?

What is the main organ of the respiratory system?

The tube-like organ that connects the pharynx to the bronchi is the:

The _______ carries blood rich in _______ back to the heart from the body cells

In which part of the respiratory system, gas exchange takes place?

Upon inhalation, the diaphragm contracts or ________, and _______  moves into the lungs

Blood enters the heart from the rest of the body through two upper chambers called ______ ,when the heart muscles ______.

The bronchioles end in tiny air sacs called:

What carries blood away from your heart to the body cells?

What is the main organ of the circulatory system?

When you breathe, your lungs take in ___ and remove ___.