Respiratory and Excretory Systems

1
Respiratory and Excretory Systems

• Maintaining the Bodys Balance

2
Structures

1. Nasal cavity
2. Mouth
3. Larynx
4. Lung
5. Right bronchus
6. Diaphragm
7. Pharynx
8. Trachea
9. Left bronchus
10. Bronchiole
11. Alveoli

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Functions

1. Mucus cleans, warms and moistens air
2. Alternative passage for air to enter the system
3. Voice box that protects the vocal chords
4. The main organ of the respiratory system
5. Tube that directs air into the right lung
6. Dome-shaped muscle that allows the chest cavity
   to expand and contract during breathing

4
Functions

• 7. Top of the throat, epiglottis controls entry
  of air
• 8. Windpipe directs air from the pharynx to the
  bronchi
• 9. Directs air into the left lung
• 10. Small branches of the bronchi that direct air
  to the alveoli
• 11. Small membrane-bound sacs that exchange gases
  from the air to the blood.

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Cardiopulmonary Connection
6
Cardiopulmonary Connection
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Respiration vs. Breathing

• The lungs are the main organs of the respiratory
  system. They function because the diaphragm, a
  large dome-shaped muscle, controls the size of
  the chest cavity. Breathing allows the body to
  acquire oxygen for cellular respiration and to
  excrete carbon dioxide waste from cellular
  respiration.

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Breathing
9
The Digestion Connection

• Food enters the digestive system where it is
  broken down into the small molecules that make up
  lipids, proteins, and carbohydrates. The
  circulatory system distributes these nutrients to
  cells in the body. Glucose is one of the main
  nutrients needed by cells for mitochondrial
  respiration.

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The Digestion Connection

• Source http//static.howstuffworks.com/gif/diabet
  es-glucose-regulation.gif

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Maintaining Glucose Levels

• Source http//www.fda.gov/fdac/graphics/2002gra
  phics/insulin.jpg

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Cellular Respiration

• Source http//www.biol.lu.se/cellorgbiol/dehydrog
  enase/mitochondrion.gif

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Gas Exchange in the Lungs
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Excretory System

• Structures
• 1. Kidney
• 2. Ureter
• 3. Bladder
• 4. Urethra
• http//www.syvum.com/iosundry/squizzes/biology/kid
  neys.jpg

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Excretory System

• Functions
• 1. Filters blood converting waste to urine
• 2. Carries urine to the bladder
• 3. Stores urine for excretion
• 4. Empties the bladder of urine
• http//www.syvum.com/iosundry/squizzes/biology/kid
  neys.jpg

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Kidney Functions

• Source www.nephrocareasia.com/ esrdpic1.htm

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How the kidney works as a filter