Breathe In. Breathe Out.
What is the main function of the respiratory system?
to provide oxygen and remove carbon dioxide from the body
What happens to your heart and lungs when you exercise?
Your heart pumps faster to send blood to muscles, and your lungs work harder to get oxygen into your blood.
The lower chambers of the heart are called the _____.
ventricles
The largest artery of the body that carries oxygen-rich blood is...
the aorta
What is the role of red blood cells?
carry oxygen and nutrients
What are the main organ of the respiratory system responsible for the gas exchange?
lungs
Where do blood cells go to pick up oxygen?
lungs
The upper chambers of the heart are the ______.
atriums
The main function on the circulatory system is
to pump blood and deliver oxygen and nutrients to all the cells in your body
Thickest blood vessels is the ________.
Arteries
The "windpipe" is also called the...
trachea
The tiny air sacs in the lungs where the gas exchange happens are called...
Alveoli
What is the main function of the heart valves?
To keep blood flowing in the right direction and prevent it from flowing backward.
What is the role of white blood cells?
to protect against illness, disease or germs.
The heart is an ______ muscle
involuntary, cardiac
How is carbon dioxide released from the body?
When we exhale
What is the correct order for air to travel through our respiratory system?
larynx, trachea, bronchi, bronchioles, and alveoli
A blood vessel that takes blood AWAY from the heart to the body’s organs is called a/an ...
artery
The thinnest blood vessel.
capillaries
How many chambers does the heart have?
4
What muscle in the respiratory system allows our lungs to transfer air in and out?
diaphragm
What is the primary function of inhaling and exhaling
to take in oxygen, to release carbon dioxide
A blood vessel that carries blood BACK TO the heart is called a/an _____.
vein
What is the main organ of the circulatory system?
heart
What is the correct path blood take through the heart
through superior/inferior vena cave, right atrium, right ventricle, pulmonary arteries to lungs, pulmonary veins to left atrium, left ventricle, aorta to body