Anatomy & Physiology Respiratory #2

Question

Which is a structure of the lower respiratory system?

Answers

  1. Nares
    • Rationale:

      The nares, or nostrils, is a structure of the upper, not lower, respiratory system.

  2. Larynx
    • Rationale:

      The larynx is a structure of the upper, not lower, respiratory system.

  3. Pharynx
    • Rationale:

      The pharynx is a structure of the upper, not lower, respiratory system.

  4. Bronchioles
    • Rationale:

      The bronchioles are a structure of the lower respiratory system. They connect the bronchi to the alveoli and are the location for gas exchange.

Overview

The respiratory system is divided into the upper respiratory tract and the lower respiratory tract. Each contains specific structures that assist with respiratory function.

Explanation

Learning Outcomes

The lower respiratory system contains specific structures. These structures include the alveoli, bronchi, bronchioles, lungs, and the trachea. The formal definition of a bronchiole is any of the tiny branches in which the bronchus divides.

Test Taking Tip

Eliminate wrong answers. Ask yourself which structures are included in the lower respiratory system when choosing the correct answer choice for this question.

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