Label Respiratory System Worksheet
The respiratory system helps us breathe by taking in oxygen and removing carbon dioxide. It includes organs like the lungs, nose, and trachea. Understanding how the respiratory system works is important for keeping our bodies healthy. This worksheet is for Grade 5 to Grade 8 students to label the parts of the respiratory system. You can download this worksheet (PDF) using the link at the worksheet’s end.
Label the Various Parts Of The Respiratory System
The respiratory system is responsible for breathing, allowing oxygen to enter the bloodstream and removing carbon dioxide from the body. Each part of the respiratory system has a specific function in this process. Here’s a breakdown of the main parts of the respiratory system and their roles:
Parts of the Respiratory System and Their Functions:
1. Nose and Nasal Cavity: Filters, warms, and moistens the air before it enters the lungs. The tiny hairs and mucus in the nasal cavity trap dust and other particles, preventing them from reaching the lungs.
2. Pharynx (Throat): Serves as a pathway for air and food, connecting the mouth and nasal cavity to the larynx and esophagus.
3. Larynx (Voice Box): Directs air into the trachea and prevents food from entering the respiratory tract. It also contains vocal cords, which vibrate to produce sound when we speak.
4. Trachea (Windpipe): Acts as a passageway for air, transporting it from the larynx down to the bronchi. The trachea is lined with tiny hairs (cilia) that further filter particles and help keep the lungs clean.
5. Bronchi: Two main branches from the trachea that lead to each lung. They direct the airflow into the left and right lungs.
6. Bronchioles: Smaller branches within the lungs that spread air evenly to each part of the lungs. They lead air into the alveoli, where gas exchange happens.
7. Alveoli: Tiny air sacs at the end of bronchioles where oxygen and carbon dioxide exchange occurs with the blood. Oxygen enters the bloodstream, and carbon dioxide leaves the blood to be exhaled.
8. Lungs: Two sponge-like organs that contain bronchi, bronchioles, and alveoli, allowing for the intake of oxygen and the release of carbon dioxide through breathing.
9. Diaphragm: A dome-shaped muscle beneath the lungs that contracts and relaxes to help draw air into and push air out of the lungs. When it contracts, the lungs expand, allowing us to inhale; when it relaxes, the lungs deflate, enabling exhalation.
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