BODY SYSTEMS

RESPIRATORY SYSTEM

FUNCTION: Supply the blood and body with oxygen

ALVEOLI

• Give lungs surface area
• Moist walls, only one cell thick
• Have lots of capillaries

CO2 IN THE BLOOD

• Taken from cells to lungs
• Diffusion into RBC
• Dissolved with hemoglobin
• Bicarbonate (HCO2-)

Untitled Slide

O2 IN BLOOD

• Diffuses into blood
• Dissolves into RBC with hemoglobin

THE PATH OF OXYGEN

• Through the nose
• Down the trachea
• Bronchi then bronchiole
• Capillaries in alveoli
• Into the RBC!

INHALE

• Diaphragm, flexes downward
• Creates a vacuum (low pressure, high volume)

EXHALE

• Diaphragm relaxes upward
• Forces air out
• High pressure, low volume

PNEUMONIA

• Imflammation in air sacs
• Sacs fill with fluid
• Coughing
• Fever
• Chills

PNEUMONIA

• Over 3 million cases per year in the USA
• Antibiotics

SOURCES

• http://www.webmd.com/lung/understanding-pneumonia-symptoms
• http://www.webmd.com/lung/how-we-breathe
• http://www.curoservice.com/parents_visitors/lungs_circulation/structure_alv...