Wisconsin CNA State Exam Vocabulary Practice 2026 - Free CNA Vocabulary Practice Questions and Study Guide

The term "respiration" refers specifically to the biological process that involves the exchange of oxygen and carbon dioxide within the body. This process is essential for maintaining the body’s metabolic functions, as oxygen is necessary for the production of energy in cells, while carbon dioxide is a waste product that needs to be expelled.

Respiration encompasses various components, including the respiratory organs such as the lungs, diaphragm, and trachea, which work together to enable breathing. When we inhale, oxygen enters the lungs and is absorbed into the bloodstream, while carbon dioxide is expelled from the bloodstream and exhaled. This vital process is crucial for sustaining life and is a key concept in healthcare and nursing, especially for those working as certified nursing assistants (CNAs).

The other terms provided do not relate specifically to the exchange of gases in the body. Responsibility refers to the obligation to perform duties or tasks, resuscitation pertains to the process of restoring someone to life or consciousness after cardiac arrest, and a resident's chart is a documentation tool used in healthcare to track a patient’s health information. Each of these terms serves a distinct purpose and is used in various contexts within the healthcare field, but none directly addresses the mechanics of breathing and gas exchange like respiration does.