Blood
True or False? Gas is exchanged in the heart only.
False! Gas is exchanged in the lungs.
What is your heart rate?
How many times your heart beats in a minute
Veins, arteries, and capillaries are all types of ___?
Blood vessels
What organ is this? A fist-sized organ/muscle with the never-ending job of pumping blood around your body
The heart
What is one of the main waste products that blood picks up on its way back to the heart (so it can be exchanged in the lungs)?
Carbon dioxide (CO2)
What are the four components of blood?
Red blood cells, white blood cells, platelets, and plasma
Why do we need blood pressure?
Without it, blood would not be able to reach all parts of the body
What type of vessel is this: They have thinner walls than arteries and they carry blood back to the heart?
Veins
How does the heart pump blood around your body?
By contracting and then relaxing continuously
Where are substances exchanged between blood and body cells?
In capillaries
If we did not have blood pressure, what would blood not be able to do?
Reach everywhere in the body
What creates blood pressure?
The force with which ventricles of the heart contract
What type of vessel is this: Thick-walled, muscular vessels that carry blood away from the heart?
Arteries
Your heart pumps blood to the rest of your body via a system of ____?
Vessels
How do O₂ and other substances pass through capillary walls?
Through diffusion
Which blood component takes oxygen and delivers it all throughout the body?
Red blood cells
True or false? Your heart rate is related to your breathing.
True! "There is a direct positive relationship between respiration rate (number of breaths) and heart rate. The more the heart beats, the more breathing occurs." -University of Houston
What are capillaries?
Tiny vessels where substances are exchanged between the blood and body cells/where arteries and veins meet
What continuous process of pumping blood does the heart have?
A double loop system
What does blood move through that brings nutrients to all the cells in your body?
Blood moving through vessels allows for ___?
Gas exchange
Are your blood pressure and your heart rate the same thing?
No! "Your heart rate and blood pressure measure two different things...The heart rate records the number of times that your heart beats per minute, while your blood pressure quantifies how strong your blood moves through the blood vessels." -DMC Hospital
Based on what you know, what would happen if we had arteries but not veins?
The heart would be able to pump blood to the rest of the body but would not be able to get blood pumped back to it. Eventually, this fictional person without veins would die.
What four main chambers is the heart made up of?
The left atrium, the right atrium, the left ventricle, and the right ventricle
In one loop, blood travels to and from the lungs and heart. What happens in the second loop of the body's double loop system? (Two things happen!)
Oxygenated blood travels from the heart out to the body and deoxygenated blood is returned to the blood