YouTube video-Bill Nye Circulation
Ch. 3Lesson 1
What is the circulatory
system?
Pulse Activity
• Question-How does activity affect your pulse? • Purpose: To determine how different activities
cause the pulse to change• Hypothesis: I think that some activities will
make your pulse go fast and some activities will make your pulse go slow.
• Materials: stop watch, index and middle fingers, wrist
• Procedure: 1. Find resting pulse rate. 2. Record observations in data chart. 3. Walk in place for 30 seconds. 4. Find pulse rate. 5. Record observations in data chart. 6. Jog in place for 30 seconds. 7. Record observations in data chart. 8. Sit for 30 seconds. 9. Find pulse rate. 10. Record observations
• Conclusion: When you do energetic activities, your pulse rate goes higher. When you are at rest, your pulse rate is lower.
Data Chart
Pulse Rate Activity
14 x 4= 56 Resting
After walking
After jogging
After resting
circulatory system• heart, blood & blood vessels• body’s transportation system • moves food & oxygen to each cell
• takes away cell’s wastes
44 partsparts
of bloodof blood
plasmared
blood cells
white blood cells
platelets
plasmaplasma• liquid part of bloodliquid part of blood
• carries food from digestive systemcarries food from digestive system
• moves chemicals (eg. adrenaline)moves chemicals (eg. adrenaline)
Is our blood Is our blood blue inside blue inside our body?our body?
• Because it lacks oxygen, the waste-rich blood that flows through the veins has a deep red color, almost like maroon.
• Because the walls of the veins are rather thin, the waste-rich blood is visible through the skin on some parts of the body.
• Look at your wrist or hands you can probably see your veins carrying your blood back to your heart.
• Your skin refracts light, though, so that deep red color actually appears a little blue from outside the skin.
Types of blood cellsRed
blood cells
PlateletsPlatelets White White blood blood cellscells
Form shaped like discs w/
dimple on each side
not complete
cells
different shapes &
sizes
Function carry oxygen
form sticky blood clots
protect body from germs
Disorder sickle cell anemia
embolism leukemia
RED BLOOD CELLS
•Bright red when carrying oxygen
•Darker red when give oxygen to cells
white white blood blood cellscells
•wrap around harmful germs
•make chemicals
•# always changing- more when need to fight infection
plateletsplatelets
• Pieces of blood cells that float in blood
• Clump together to form sticky clots
Video-Magic School Bus Blood Cells
sickle cell anemia
Video-What is sickle cell anemia?
ArteriesArteries, Capillaries & Veins
3 kinds of 3 kinds of blood vesselsblood vessels
1. 1. AArteriesrteries• carry blood carry blood AAway way
from heartfrom heart
2. veins2. veins• carry blood from carry blood from
cells to heartcells to heart
3. 3. ccapillariesapillaries• CConnect onnect
arteries & veinsarteries & veins
• smallest blood smallest blood vesselsvessels
• gas exchange gas exchange (CO(CO2 2 & O)& O)
They are so thin that blood cells can only pass through them in single file.
Video-The Vessels of the Circulatory System
1. Blood containing wastes & CO2 flows from body right atrium.
2. Right atrium contracts, squeezes blood right ventricle.
3. Right ventricle contracts, pumping blood artery leading lungs.
4. Blood containing oxygen flows in veins from lungs left atrium.
5. Goes to the body thru. the left ventricle
Video-How the Heart Works
Blood’s Journey
through the Body
valves• flaps that keep blood flowing in 1 direction
Pathway of Circulation
YouTube video-Bill Nye Circulation
right atrium
right ventricle
left atrium
left ventricle
Guess the Covered Word
valvesvalves
Flaps that keep blood flowing in one
direction
arteriesarteries
Blood vessels that carry blood away
from the heart
plasmaplasma
Makes up more than half of blood
plateletsplatelets
Pieces of cells that float in the blood
capillariescapillaries
so thin that blood cells can only pass through
them in single file
sickle-cell sickle-cell anemiaanemia
Disease in which the red blood cells have a shape like a crescent
moon
red blood red blood cellscells
Shaped like discs with a dimple on each side
veinsveins
Blood vessels that carry blood from cells
back to the heart
plateletsplatelets
Clump together to form blood clots
white blood white blood cellscells
protect body from germs
circulatory circulatory systemsystem
Body’s transportation
system
plasmaplasma
Liquid part of blood
Write a story about how a blood cell travels through the body.
• Your story must include the following:
1. 3 types of blood vessels and their functions
2. 4 components of blood (red blood cells, white blood cells, platelets & plasma) and their forms and functions
3. The blood’s path through the body, including the chambers of the heart and the valves