RESIRATORY SYSTEM Questions

Directions: Observe the diagram of the respiratory systemand read the information about the respiratory system and itsstructures. Use textual evidence to answer the following questions.

  1. Define the term inspiration (inhalation) and expiration (exhalation).

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  1. Identify the structure air first enters when you inhale. ______
  2. Identify the structure after the nasal cavity that is also known as the throat. ______
  3. Identify the structure also called the voice box. ______
  4. Identify the structure also called the windpipe. ______
  5. Identify the structures that hold the trachea upright (use your textbook/internet). ______
  6. Identify what is found on the lining of the nasal cavity and the trachea and the function of these structures (use your textbook/internet). ______
  7. Identify the two structures that branch off the trachea. ______
  8. Identify the smaller tubes that branch off the bronchi. ______
  9. Identify the structures at the end of the bronchioles. ______
  10. Describe the structure of alveoli.

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  1. Describe how GAS EXCHANGE occurs in the alveoli.

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  1. Identify the process that transfers O2 from the alveoli to the blood and CO2 from the blood back to the alveoli. (Hint…the O2 and CO2 are both moving from a high to low concentration.)______
  2. Identify the sheet of muscle separating the chest cavity from the abdominal cavity. ______
  3. Describe how the diaphragm causes inhalation. ______

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  1. Describe how the diaphragm causes exhalation(Hint…it is the complete opposite of what occurs during inhalation). ______

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  1. Identify the sequence of structures that air passes through during inhalation starting with the nasal cavity and ending in the alveoli.

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Critical Thinking…

Asthma involves the construction of bronchi and bronchitis involves the swelling and inflammation of bronchi. How do these two disorders disrupt homeostasis?