Which of the following structures normally serves as a passageway for both air AND food?

Question

BlackTom AI · Accepted Answer

Question: Which of the following structures normally serves as a passageway for both air AND food?

Option 1: Laryngopharynx
- The laryngopharynx is the lower part of the pharynx that serves as a shared passageway for both air and swallowed food, directing air toward the larynx and esophagus-directed food to the esophagus. This dual role makes it the correct choice.

Option 2: Larynx
- The larynx (voice box) primarily functions as part of the airway and organ of voice. While it participates in swallowing by closing the airway during a swallow, it is not a main passageway for food; food passes through the esophagus. This makes it incorrect as the primary shared passageway for air and food.

Option 3: Esophagus
- The esophagus transmits swallowed food from the pharynx to the stomach and is not a passage for air. Although air does not typically travel through the esophagus, this option fails the air component of the question.

Option 4: Trachea
- The trachea, or windpipe, conducts air to the lungs and is not involved in transporting food. It remains part of the respiratory tract, so it does not serve as a passageway for both air and food.

Option 5: Nasal cavity
- The nasal cavity is involved in air intake and conditioning but does not convey food. It is entirely separate from the digestive tract, ruling it out as a passageway for both air and food.

Summary: Among the options, only the laryngopharynx functions as a shared conduit for both swallowing food and transmitting air, aligning with the anatomy of the pharynx where the upper airway and digestive tract intersect.

Which of the following structures normally serves as a passageway for both air AND food?

查看解析

登录即可查看完整答案

类似问题

Both food and air travel through the:

Which of the following structures normally serves as a passageway for air only (i.e., no food)?

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

Under the assumptions used in cost-volume-profit analysis, as the activity increases:

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单