Anatomy & Physiology Respiratory #1

Question

Which structure is classified as being in the upper respiratory system?

Answers

  1. Larynx
    • Rationale:

      The larynx, a structure of the upper respiratory system, houses the vocal folds, and is responsible for pitch and sound manipulation of the voice. It is situated just below the location where the pharynx splits into the trachea and the esophagus.

  2. Trachea
    • Rationale:

      The trachea, or windpipe, connects the pharynx to the larynx. It is classified as a part of the lower, not upper, respiratory system.

  3. Bronchi
    • Rationale:

      The bronchi receives inspired air from the larynx and then moves the air into the lungs. It is classified as part of the lower, not upper, respiratory system.

  4. Alveoli
    • Rationale:

      The alveoli are the air sacs in the lungs. This is the location where the physiological exchange of gases occurs; in addition, this structure is classified as a part of the lower, not upper, respiratory system.

Overview

The respiratory system is divided into the upper respiratory system and the lower respiratory system. Each portion contains specific structures.

Explanation

Learning Outcomes

The upper respiratory system consists of the larynx, nose and nares (i.e., nostrils), and pharynx. The larynx receives inspired air from the trachea. It is also the passage through which air passes into the bronchi of the lung.

Test Taking Tip

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

Video Rationale