4th Grade-Ch. 5 Lesson 2 What are the Respiratory and Circulatory Systems
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Ch. 5 Lesson 2 What are the respiratory & circulatory systems?
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Transcript of 4th Grade-Ch. 5 Lesson 2 What are the Respiratory and Circulatory Systems
Ch. 5 Lesson 2What are the respiratory &
circulatory systems?
Pathway of Respiration
1.Mouth/nose
Pathway of Respiration
2. Pharynx (throat)
Pathway of Respiration
3. Trachea
Pathway of Respiration
4. Bronchi
Pathway of Respiration
5. Lungs
Pathway of Respiration
6. Air sacs (alveoli)
Pathway of Respiration1. Mouth/nose 2. Pharynx (throat) 3. Trachea 4. Bronchi 5. Lungs
6. Air sacs (alveoli)
Pathway of Respiration1. Mouth/nose 2. Pharynx (throat) 3. Trachea 4. Bronchi 5. Lungs
6. Air sacs (alveoli)
Lungs
trachea (windpipe)• air tube that connects
throat to lungs
• made of cartilage = (stiff, connective tissue)
bronchial tubes (bronchi)• branch from trachea• each tube branches into smaller tubes• each twig ends in tiny air sac (alveoli)
thin walled chambers
thru which oxygen
moves blood
diaphragm• dome shaped muscle that moves to help
you breathe- found just below lungs
• inhale (breathe in)- moves
• exhale (breathe out)- moves
The diaphragm is a muscle in your chest.
Parts and Functions of the Respiratory System video clip
When you inhale, does your chest expand or
contract? Which direction does your diaphragm move?
When you inhale, your chest expands. The
diaphragm pulls downward.
nose
mouth
pharynx
trachea
lungs
bronchi
bronchioles
alveoli (air sacs)diaphragm
nose
mouth
pharynx
trachea
lungs
bronchi
bronchioles
alveoli (air sacs)
diaphragm
Activity-Lung Power
• Prediction: I predict that the small balloon inside the bottle will_________________
when I pull down on the large balloon.
I predict that the small balloon inside the bottle will _________________ when I push up on the large balloon.
• Result: __________________________
Lung Capacity activity
How long does it take blood to
circulate throughout your body?
It takes blood about one minute to
circulate throughout your body.
Circulatory SystemCirculatory System
• moves blood thru body
• works w/ resp. system
circulatory system
heart bloodblood
vessels
Respiratory & circulatory Respiratory & circulatory systems work together to systems work together to
bring oxygen to the cells of bring oxygen to the cells of the body.the body.
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1.1.Oxygen passes from air Oxygen passes from air sacs (alveoli) sacs (alveoli) blood blood
2.2. Blood vessels carry Blood vessels carry oxygen oxygen heart heart
3.3.Heart Heart pumps pumps blood blood with with oxygenoxygen bodybody
Introduction to the Circulatory System video clip
Did you know that your heart beats over 100,000times a day?
heartheart
Right atrium
Left atrium
Right ventricle
left ventricle
The Heart
Right
atrium
Left
atriumRight
ventricle
Left
ventricle
From body in a vein
To lungs in an artery
From lungs
In a vein
To body in an artery
Pathway of Circulation
How blood moves through the bodyBlood
moves from the left
atrium to the right atrium Oxygen rich
blood from the lungs enters
the heart through the left atrium
Blood moves from
the right ventricle to the lungs to get oxygen
Bobby Cindy Greg
