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CHAPTER 37:CHAPTER 37:
Circulatory and Respiratory
Systems
Circulatory and Respiratory
Systems
Alana and Haley
What is the Circulatory System?
What is the Circulatory System?
It consists of:• The Heart• Blood Vessels• Blood
It transports blood throughoutthe body.
It consists of:• The Heart• Blood Vessels• Blood
It transports blood throughoutthe body.
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heartBlood vessels
blood
Alana and Haley
Heart and Blood Pressure
Heart and Blood Pressure
• Systemic Circulation• Pulmonary Circulation
• Heart pumps bloodthrough thebody usingcontractions• Heart is aboutthe sizeof your fist
• Systemic Circulation• Pulmonary Circulation
• Heart pumps bloodthrough thebody usingcontractions• Heart is aboutthe sizeof your fist
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Alana and Haley
Blood VesselsBlood Vessels
• Usually, oxygen rich bloodthrough arteries• Usually, oxygen poor bloodThrough veins
• Usually, oxygen rich bloodthrough arteries• Usually, oxygen poor bloodThrough veins QuickTime™ and a
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Alana and Haley
Blood PlasmaBlood Plasma
• Made of 90% water• 10% dissolved gasses• Contains salts, nutrients,
enzymes, hormones, waste products, and plasma proteins.
• Made of 90% water• 10% dissolved gasses• Contains salts, nutrients,
enzymes, hormones, waste products, and plasma proteins.
Alana and Haley
Blood CellsBlood Cells• Red blood cells transportoxygen• White blood cellsfight infection• Platelets helpwith blood clotting
• Red blood cells transportoxygen• White blood cellsfight infection• Platelets helpwith blood clotting
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Alana and Haley
The Lymphatic
System
The Lymphatic
System• A network of vesselsthat collect fluids lostby the blood• Then, it returns it to theCirculatory system
• A network of vesselsthat collect fluids lostby the blood• Then, it returns it to theCirculatory system
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Alana and Haley
What is the Respiratory System?
What is the Respiratory System?
• Consists of nose, larynx, trachea, lungs, bronchi,and alveoli
• Consists of nose, larynx, trachea, lungs, bronchi,and alveoli
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Gas ExchangeGas Exchange
• Occurs by diffusionacross membrane ofan alveolus and capillary
• Occurs by diffusionacross membrane ofan alveolus and capillary
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Green=carbon dioxide
Alana and Haley
BreathingBreathing
• When you inhale,diaphragm contracts
• When you exhale,diaphragm relaxes
• When you inhale,diaphragm contracts
• When you exhale,diaphragm relaxes
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Alana and Haley