the human body circulatory and respiratory systems 4 th grade science
TRANSCRIPT
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The Human Body
Circulatory and Respiratory Systems
4th Grade Science
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EQ:
What is the circulatory system?
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Circulatory K-W-LKnow Want to Know Learned
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What is the circulatory system?
• “circ” means “to go around”
The circulatory system is the body system that transports blood around the body.
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Who Am I?
• African-American doctor
• Discovered that by removing the solid cells in blood, keeping only the plasma, the blood could be stored for a long time
• Established the first blood bank in New York City
• Saved thousands of lives during WWII
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EQ:
What are the 4 main parts of the blood?
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Blood Key Termsantibodies – proteins that attack invading germs
circulatory system – the system that carries blood around the body
coagulation- clumping of blood to form a solid mass
hemoglobin – a red pigment that can combine with oxygen; it gives red blood cells their color
oxygen- colorless, odorless gas that is breathed in and is essential for cell function in the human body
plasma – the watery part of the blood
platelets – the part of the blood that controls bleeding
red blood cells – the part of the blood that carries oxygen
white blood cells – the part of the blood that helps the body fight infection
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Blood Model
white blood cell
red blood cell
platelet
plasma
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Charles Drew (1904-1950)
p.289-290• African-American doctor• Discovered that by removing the
solid cells in blood, keeping only the plasma, the blood could be stored for a long time
• Established the first blood bank in New York City
• Saved thousands of lives during WWII
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EQ:
What are the 4 chambers of the heart?
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Cardiac Key Terms
aorta: carries blood from the left side of the heart to most of the limbs and organs
atrium: a chamber of the heart that receives blood from the veins and pumps it into a ventricle (atria or atriums)
ventricle: a chamber of the heart that receives blood from the atrium and pumps it into the arteries
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The Heart
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EQ:
What carries blood away from the heart?
What returns blood to the heart?
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Pulse Key Terms
artery: blood vessel that transports blood away from the heart to other parts of the body
blood pressure: the pressure, controlled by the heartbeat, that is caused by blood pressing against the walls of blood vessels
capillary: a tiny blood vessel
pulse: the throbbing of arteries caused by the rhythmic beating of the heart
vein: a tube through which blood returns to the heart
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You can keep your heart healthy by. . .
• Eating a well-balanced diet– Limit cholesterol (fatty substance),rich foods
• red meat, cheese, and eggs
– Cholesterol can build up on the walls of arteries• causing them to harden
• Narrow
• Block
• Exercising regularly– Helps strengthen the heart
– Decreases the chance of heart disease
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EQ:
What are the 4 human blood types?
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Types and Filtering Blood
blood types: different combinations of two proteins that are found on the surface of blood cells; results in 4 blood types (A, B, AB, O)
liver: an organ that removes and breaks down potentially toxic substances in the body and converts them to harmless waste products
spleen: the organ that is the disposal site for worn-out red blood cells and also acts as a filter, trapping bacteria and viruses that are transported in the blood
transfusion: the transferring of blood or blood parts from one person to another
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A
B
AB
O
A
AB
B
AB
AB
A
B
AB
O
A
O
B
O
A
B
AB
O
O
Karl Landsteiner
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liver•Removes and breaks down toxic substances
•Converts to harmless waste
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spleen
• Disposal of worn-out red blood cells
•Filters and traps bacteria and viruses
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Bill Nye “Science Guy”
Blood and Circulation
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EQ:
What is the respiratory system?
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Respiratory K-W-LKnow Want to Know Learned
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What is the respiratory system?
• “respir” means “to breathe out”
The respiratory system is the body system that takes in oxygen and gets rid of carbon dioxide.
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EQ:
What are the 5 basic parts of the respiratory system?
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Respiratory System
alveoli: the air sacs in the lungs where the exchange of oxygen for carbon dioxide takes place
bronchi: two small tubes that deliver air to the lungscarbon dioxide: a waste gas that is removed from the blood and
exits the body when a person exhalesdiaphragm: a thin sheet of muscle just below the lungslarynx: also called the voice box, a part of the body that holds the
vocal cordslungs: two pink, fleshy organs beneath the rib cageribs: bones that curve around the torso from your back to your
chest and surround protect your lungs and heartthroat: the part of the digestive system that connects the mouth
and the esophagustrachea: also called the windpipe, a part of the body that brings
air to the lungs
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EQ:
How does your blood get oxygen from the air?
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Non-smoker vs. Smoker
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Bill Nye “Science Guy”
Respiration
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Elizabeth Blackwell (1821-1910)
• Born February 3, 1821, near Bristol, England
• First woman in the United States to receive a medical degree, 1849
• Opened the New York Infirmary for Indigent Women and Children
• She created a medical school for women in the late 1860s