The Heart
Circulation
The Respiratory System
Blood
Random Facts
100
What size can you compare the heart to?
approximately the size of your fist
100
The circulatory system is responsible for?
What is transporting blood and materials throughout the entire body
100
the job of the respiratory system is?
What is breathe in oxygen and breathe out carbon dioxide
100
What four elements is your blood made up of?
What is red blood cells, white blood cells, platelets and plasma
100
IN the analogy to a delivery service, what would the aorta and the vena cava be, then what would smaller arteries/veins be, and what would capillaries and the cells that line them be?
aorta/vena cava- highway smaller arteries/viens - roads that come off the highway capillaries - small streets cells beside capillaries - houses where deliveries are made
200
the average amount of times a heart beats per min? Why does heartbeat elevate during exercise?
60-100 bpm Because the muscles need more oxygen to make more energy.
200
the three parts of the circulatory system
What is the heart, the blood and the vessels
200
What is surface area? How is it maximized in the lungs?
surface area is how much something spreads out flat It is maximized in the lungs by branching out into smaller and smaller tubes and finally to millions and millions of alveoli where gas exchange actually occurs. ** fun fact - the average number of alveoli in 2 human lungs is 600 million
200
the role of red blood cells?
What is to carry oxygen and carbon dioxide.
200
three types of blood vessels are
What is arteries, capillaries and veins
300
how many chambers does the heart have?
What is 4 chambers
300
What kind of blood does the right atrium fill up with?
used blood from the body
300
What are the names of the tubes in the respiratory system?
trachea - bronchi - bronchioles/bronchial tubes ** note - that's why a upper respiratory infection that gets worse and goes deeper is called "bronchitis"
300
The rold of white blood cells?
What is to fight off germs and infection
300
How do we get air in and out?
in - diaphragm contracts to flat and down and ribcage expands, creating space where air rushes into out - diaphragm relaxes to arched and up and ribcage goes back down, eliminating the extra space so the air is pushed back out
400
the role of a valve is to...
What is open and shut like a door to let blood flow through and stop if from flowing backwards
400
THe tube that brings blood from the lungs to the left side of the heart is called what?
Pulmonary vein
400
Tiny sacs where gas exchange happens inside the lungs. What are they surrounded by?
alveoli surrounded by capillaries so that oxygen can be delivered to the blood stream and carbon dioxide can be picked up
400
the role of platelets?
What is to help stop bleeding and help create scabs
400
capillaries are what size?
ONE CELL THICK - red blood cells move through one cell at a time
500
the left side of the heart receives what type of blood, from where?
What is oxygenated blood or fresh blood from the lungs
500
what would happen if circulation stopped?
What is you body will oxygen and nutrients and therefore be unable to produce energy, and organs and cells will begin to die
500
What percentage of the Earth's atmosphere is oxygen? What is the most abundant gas in the atmosphere?
oxygen - 20% nitrogen is the most abundant
500
Why do you get a side ache when you exercise?
Oxygen deprivation and carbon dioxide accumulation - the body cannot replace oxygen and carry out carbon dioxide quick enough to keep pace
500
What is the equation for cellular respiration?
oxygen+food(fuel) = energy + carbon dioxide + water
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