wednesday 5/13/15 pick up a red & blue pencil. get out your human body book & clear your...
TRANSCRIPT
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Wednesday 5/13/15
Pick up a red & blue pencil. Get out your Human Body Book &
clear your desk.
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To carry nutrients and oxygen to and remove waste from
the cells of the body.
The Function
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What makes up the circulatory system?
1. Heart
2. Blood
3. Blood vessels
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There are 3 types of blood vessels:
1. ARTERY
2. VEIN
3. CAPILLARY
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The Heart
ARTERIES - carry blood
away from the heart
VEINS – bring blood
toward the heart
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The HeartAorta
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Basic Heart
RA LA
RV LV
4 chambers:
- 2 atria (A)
- 2 ventricles (V)
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Aorta
Superior Vena Cava
Inferior Vena Cava
Descending Aorta
R Atrium
R Pulmonary Veins
R Pulmonary
Artery
R Ventricle
L Pulmonary Artery
L Pulmonary Veins
L Ventricle
LUNGS
LUNGS
L Atriu
m
RA
RV LV
LA
XX
X
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Function of the Immune System
• To defend the body from foreign pathogens
•Defenders are: WBC’s (White Blood Cells) & Lymph
Nodes
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Function of Respiratory System
• Respiration means breathing bringing in O2 and releasing CO2
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Steps in Breathing
• 1st Step Take in air through the nose or mouth.
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Steps in Breathing
• 2nd Step Air flows into pharynx, passes epiglottis, and moves through larynx.
When you swallow food, the epiglottis covers the entrance to the trachea, which prevents food from getting into the air pathways.
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Steps in Breathing
• 3rd Step Air travels into the windpipe, or trachea.
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Steps in Breathing
• 4th Step Trachea splits into two pipes called the bronchi, which lead into the lungs.
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Steps in Breathing
• 5th Step Air sacs in the lungs called alveoli, where gas exchange occurs.
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Diaphragm
Larynx (voice box)Trachea
Pharynx
Lung
Bronchii
Take in Air
Bronchioles
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How do you breathe?
INHALEEXHALE