Lab%206:%20Respiratory%20System

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Lab 6 Respiratory System
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Announcements

• Extra Credit Assignment
• Extra Credit Quiz

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Quick and Painless Review

• Where is your thymus?
• What is the difference between lymph nodules and
  MALT?
• What is the difference between your lymph nodes
  and your spleen?

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Respiration Overview

• Anatomy of the Respiratory System
• Mathematics of the Respiratory System
• How do you evaluate malfunctions in the
  respiratory system?

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Respiratory System

• Respiratory System
• Functions?

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Respiratory System

• Respiratory System
• Functions?
• Receive air for breathing
• Exchange gases (O2. CO2) with the blood
• Expel modified air

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Schematic of Respiratory System
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Upper Respiratory Tract

• Nasal Cavity
• Guard Hairs
• Mucous
• Oral Cavity
• Pharynx
• Posterior to Nasal and Oral Cavities
• Cleans Air
• Intersection of Respiratory and Digestion

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Upper Respiratory Tract

• Epiglottis-
• Flap blocks food from entering the lower
  respiratory tract
• Larynx
• 9 plates of Cartilage
• Large Chamber
• Contains vocal cords

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Anatomy of the Larynx
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Anatomy of the Larynx

• Intrinsic and extrinsic muscles in larynx pull
  the cartilage
• This causes the cords to move
• Males have thicker cords

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Functions of the Upper Respiratory Tract

• Cleans air
• Guard hairs
• Mucus (MALT)
• Cilia
• Warms air
• Moistens air

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Anatomy of the Lungs

• Trachea
• C-shaped cartilage
• Mucociliary escalator
• Primary Bronchi
• Cartilage
• Right wider than left
• Secondary Bronchi
• Tertiary Bronchi
• More branches on right

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Mucociliary Escalator

• Muscus-
• Traps particles
• Cilia-
• Move particles up toward pharynx

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Lower Respiratory Tract

• Bronchioles
• Small