Body Structures Anatomy
Respiratory Anatomy

Master Respiratory Anatomy with Picmonic for Pre-Health

With Picmonic, facts become pictures. We've taken what the science shows - image mnemonics work - but we've boosted the effectiveness by building and associating memorable characters, interesting audio stories, and built-in quizzing.

Respiratory Anatomy

Recommended Picmonics

picmonic thumbnail
picmonic thumbnail
Skin Anatomy
picmonic thumbnail
Urinary Excretory Anatomy
picmonic thumbnail
Alveolar Gas Exchange

Respiratory Anatomy

Respiratory Tract
The respiratory system is the primary source of oxygen inhalation and carbon dioxide exhalation in the body, but also plays a variety of roles in nonspecific immune defense and general homeostasis. Anatomically, it begins with the nasal cavity, which is the primary site of inhalation. Hairs in the nasal cavity filter out dust and particles, which are eventually coated with mucus and expelled. The mucus acts as a filter, but also moistens the nose to prevent dryness and cell damage. Additionally, air is warmed and humidifying, adding to protection of nasal tissues. Capillaries that run near the surface of the nose release heat through convection, which warms air entering the nose. This air travels down the pharynx, which is the part of the throat just behind the mouth and nasal cavity. It connects to the larynx, also known as the voice box. The larynx is full of cilia that expel mucus and dust back through the pharynx and out of the body. The trachea is the windpipe and bottom section of the throat. Air enters the lungs through the bronchi, which become smaller tubes known as bronchioles. Eventually, air reaches the end of the respiratory tract, the alveoli, where gas exchange occurs.
Nasal Cavity
Nose cave

The nasal cavity is inside the nose and nostrils. It serves as the primary location of air entry into the body.

Hair Filters
Hair-guy stopping Dust-bunnies

Hair in the nasal cavity filters out dust and other particles.

Mucus Filters and Moistens
Mucus-guy Spraying Dust-bunny

Mucus produced in the nasal cavity filters out particles for expulsion and also helps keep the nose moist by humidifying passing air. This helps prevent damage to nasal tissues from dryness.

Capillaries Warm
Caterpillars Warming by Fire

Capillaries that run near the surface of the nose give off heat through convection, which warms air coming into the nose.

Pharynx (Throat)

The pharynx is the main part of the throat just behind the mouth and nasal cavity. Upon inhalation, air travels down and comes to the larynx.

Larynx (Voice Box)

The larynx is between the pharynx and trachea, and helps expel any particles that made it past the nose or mouth.

Cilia Expel Mucus and Dust
Celery expelling Dust-bunny

Cilia in the larynx expel mucus and dust back up through the pharynx and out of the body.


The trachea is the windpipe and connects the larynx with the lungs. It bifurcates into the two primary bronchi.


There are two primary bronchi; one to the left lung and one to the right lung. They divide into bronchioles, which are smaller passages for air.


The alveoli are the sites of gas exchange in the lungs, where CO2 is absorbed from the blood and oxygen is absorbed into the blood.


Take the Respiratory Anatomy Quiz

Picmonic's rapid review multiple-choice quiz allows you to assess your knowledge.

It's worth every penny

Picmonic for Pre-Health Covers

Our Story Mnemonics Increase Mastery and Retention

Memorize facts with phonetic mnemonics

Unforgettable characters with concise but impactful videos (2-4 min each)

Memorize facts with phonetic mnemonics

Ace Your Pre-Health Classes & Exams with Picmonic:

Over 1,890,000 students use Picmonic’s picture mnemonics to improve knowledge, retention, and exam performance.

Choose the #1 Pre-Health student study app.

Picmonic for Pre-Health covers information that is relevant to your entire Pre-Health education. Whether you’re studying for your classes or getting ready to conquer the MCAT, we’re here to help.

Works better than traditional Pre-Health flashcards.

Research shows that students who use Picmonic see a 331% improvement in memory retention and a 50% improvement in test scores.