Circulatory System 1
Name the major organ of the circulatory system.
Heart
What color represents oxygenated blood?
What color represents deoxygenated blood?
Red
Blue
Name the major organ of the circulatory system.
Lungs
What blood vessel wrap around the alveoli?
Capillaries
What does RBC and WBC stand for?
Red Blood Cells
White Blood Cells
Speeds up - our cells need more oxygen
Which blood vessel is most important to not break or rupture? Why?
Arteries - Usually has oxygenated blood, also a lot of blood
Where does the exchange of oxygen and carbon dioxide happen?
at the alveoli in the lungs
What is the flap that directs air and food called?
Epiglottis
What component of your blood stops bleeding by clotting?
Platelets
What are the upper chambers of the heart called?
Atriums
Name 3 blood vessels and give a brief description of each of them.
Arteries - thick and deeper
Veins - bring blood back to heart
Capillaries - small and very thin
What % of the air we breath is oxygen?
21%
What are the rings around the trachea called and why are they there?
Cartilage, support the trachea
What is the liquid part of your blood called?
Plasma
What are the lower chambers of the heart called?
Ventricles
What prevents the backflow of blood?
Valves
The muscle below the lungs that help us breath?
Is it involuntary or voluntary?
Diaphragm - Usually Involuntary but can be either!
What does the trachea, bronchi, and bronchioles sort of look like?
Tree, broccoli, etc.
How many cells thick are capillaries and why?
1 - so CO2 and O2 can easily diffuse across - also small places
What is being taken from your cells and what is being delivered?
Carbon dioxide, oxygen
Explain how the muscular system is related to the circulatory system?
The heart is a muscle
Muscles need oxygen and need carbon dioxide taken away
what is the name of the two smaller pipes at the end of the trachea called
the bronchi
What gas makes up most of the air we breath but we don't need it? What % is it?
Nitrogen 78%
When we breath in, what direction does the diaphragm flex?
Downwards