1
Portage Learning Anatomy & Physiology Lab Exam 5 Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
What is the primary function of the alveoli in the lungs?✔✔ Gas exchange between air and blood.
What muscle is primarily responsible for inhalation?✔✔ The diaphragm.
What structure prevents food from entering the trachea?✔✔ The epiglottis.
Where does gas exchange occur in the lungs?✔✔ In the alveolar sacs.
What is the function of the nasal conchae?✔✔ To warm, moisten, and filter air. 1 / 3
2
What structure connects the larynx to the bronchi?✔✔ The trachea.
What type of cartilage forms the front of the larynx?✔✔ Thyroid cartilage.
What structure serves as the voice box?✔✔ The larynx.
What keeps the trachea open at all times?✔✔ C-shaped cartilage rings.
What happens to the diaphragm during inhalation?✔✔ It contracts and moves downward.
What structure divides into the left and right bronchi?✔✔ The trachea. 2 / 3
3
What part of the brain controls breathing rate?✔✔ The medulla oblongata.
Which lung is slightly smaller and why?✔✔ The left lung, to make space for the heart.
What lines the trachea and traps debris?✔✔ Ciliated epithelium and mucus.
What is the function of surfactant in the lungs?✔✔ It reduces surface tension in alveoli to prevent collapse.
What is the name of the small airways that lead directly into alveolar sacs?✔✔ Bronchioles.
Where does digestion begin?✔✔ In the mouth.
- / 3