Transcript Circulatory System

Mind Stretcher – 1/19/16
Put the following images in order from smallest to
largest. Add whether each is a tissue, cell, organ or
organ system too!
A
B
C
D
Answer: B- cell, C-tissue, D- organ, A- system
Mind Stretcher 1/20/16
What are two functions of the respiratory
system?
1. ______________________________
2. ______________________________
Mind StretcherAnswer
* To take in oxygen
* To eliminate waste in the form of
carbon dioxide
Heart Rate Lab
• I will time the whole class to complete each
exercise for 1 full minute
• You need to be QUIET during this time!
• After the 1 minute…you will quickly find your
pulse.
• Start counting the beats when I say to “count”
and stop when I say “stop.”
• Record this info on your lab sheet
What is the effect of exercise on heart rate?
What was your resting pulse per minute?
What happened to your heart rate as you increased the
intensity of exercise?
Why does this happen?
What does your cells need more of when working harder?
How do they get it? (through what 2 systems working
together?)
What is this CELL process called? What does it create?
Circulatory System
AKA: Cardiovascular System
• Your heart is really a muscle.
It's located a little to the left
of the middle of your chest,
and it's about the size of your
fist.
I heart
science!
• The heart sends blood
around your body. The blood
provides your body with the
oxygen and nutrients it
needs. It carries away waste.
• Your heart is sort of like a
pump. The right side of your
heart receives blood from the
body and pumps it to the
lungs. The left side of the
heart does the exact
opposite: It receives blood
from the lungs and pumps it
out to the body.
http://kidshealth.org/kid/htbw/heart.html
It's great to circulate
You probably guessed that the blood just doesn't slosh
around your body once it leaves the heart. It moves
through many tubes called arteries and veins, which
together are called blood vessels. These blood vessels
are attached to the heart. The blood vessels that carry
blood away from the heart are called arteries. The ones
that carry blood back to the heart are called veins.
The movement of the blood through the heart and
around the body is called circulation, and your heart is
really good at it — it takes less than 60 seconds to
pump blood to every cell in your body.
Interesting...
• • The body of an adult contains
over 60,000 miles of blood vessels!
• • An adult's heart pumps nearly
4000 gallons of blood each day!
• • Your heart beats some 30 million
times a year!
• • The average three-year-old has
two pints of blood in their body; the
average adult at least five times
more!
• • A "heartbeat" is really the sound
of the valves in the heart closing as
they push blood through its
chambers.
What's lungs got to do
with it?
• In the lungs, carbon dioxide is removed from
the blood and sent out of the body when we
exhale. What's next? An inhale, of course, and
a fresh breath of oxygen that can enter the
blood to start the process again. And
remember, it all happens in about a minute!
Brain Pop- Circulatory System
https://www.brainpop.com/heal
th/bodysystems/circulatorysyst
em/
If you are still
confused...
• http://kids.discovery.com/tell-me/science/bodysystems/your-cardiovascular-system
• http://www.findingdulcinea.com/guides/Scienc
e/The-Circulatory-System.pg_00.html