Work

Chapter 12 Practice Ex

* Question 1

0 out of 1 points

| |

| Identify the structure in the lungs that is also called the air sac where oxygen and carbon dioxide passes: | | | |

| Selected Answer: |  bronchioles |

Correct Answer: |  alveolus |

Response Feedback: | The correct answer is alveolus because the alveolus is the air sac where oxygen and carbon dioxide pass in and out of the lungs. The other answers are incorrect because the bronchioles connect the alveoli with the bronchi and is not an air sac. The capillaries is a blood vessel. The trachea is a passage way for air between the bronchi and pharynx. |

| | | |

* Question 2

0 out of 1 points

| |

| Identify the function of the epiglottis: | | | |

| Selected Answer: |  to lighten the head, lubricate and humidify the air |

Correct Answer: |  prevent choking or aspiration of food |

Response Feedback: | The correct answer is to prevent choking or aspiration of food because it is a flap of tissue that covers the larynx as food passes from the pharynx to the esophagus. The other answers are incorrect because the sinuses lighten the head, lubricate and humidify the air. The alveoli allows for the exchange of gases and the larynx vibrates to make sound. |

| | | |

* Question 3

0 out of 1 points

| |

| Identify the term meaning lymphatic tissue located in the nasopharynx: | | | |

| Selected Answer: |  epiglottis |

Correct Answer: |  adenoids |

Response Feedback: | The correct answer is adenoids because adenoids are lymphatic tissue located in the nasopharynx. The other answers are incorrect because the epiglottis is a flap of tissue that covers the larynx to prevent choking or aspiration of food as it is swallowed. The palantine tonsils are located at the back of the oral cavity. Cilia are tiny hair like fibers in the nose and lungs that prevent foreign bodies from entering the nose and to expell mucus out of the lungs. |

| | | |

*...