1) Mucus traps __________.

2) The windpipe is lined with sticky __________ and microscopic __________.
3) Tiny microscopic __________ are called cilia.

I'll be glad to check your answers.

1 bacteria

2 I don't know
3 cells?

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http://dictionary.reference.com/browse/cilia

1) Mucus traps foreign particles, such as dust, allergens, and pathogens.

To understand why mucus traps these particles, we need to know a bit about its function. Mucus is a sticky substance produced by the cells lining various organs in our body, including the respiratory and digestive systems. One of its main roles is to protect our body from potential harm.

When it comes to the respiratory system, mucus plays a crucial role in trapping particles that we inhale. It acts as a defense mechanism to prevent these particles from entering our lungs and causing damage or infection. The sticky nature of mucus allows it to capture these particles and prevent them from progressing further into our respiratory system.

If you were to encounter this question in a learning context, the most effective way to confirm this answer would be to consult a trusted source, such as a biology textbook or reliable online resources. These sources will provide detailed explanations and references supporting the role of mucus in trapping foreign particles.

2) The windpipe, also known as the trachea, is lined with sticky mucus and microscopic hair-like structures called cilia.

Understanding the structure and function of the windpipe will help us understand why it is lined with mucus and cilia. The windpipe is a hollow tube that connects the larynx (voice box) to the bronchi, which further branch into the lungs.

The mucus in the windpipe serves as a protective layer. It helps to moisturize and lubricate the lining of the trachea, thereby preventing it from drying out. Additionally, the stickiness of the mucus helps to trap foreign particles, like dust and smoke, that we may inhale. Without this layer of mucus, these particles could potentially reach our lungs and cause irritation or infection.

To confirm this answer, you can refer to reputable anatomy or biology textbooks, medical websites, or consult healthcare professionals who are knowledgeable in respiratory system anatomy.

3) Tiny microscopic hair-like structures found in our respiratory tract are called cilia.

Cilia are specialized structures present in various parts of our body, including the respiratory system. These hair-like structures are extremely small and perform important functions in the body. In the context of the respiratory system, cilia are primarily found lining the trachea (windpipe) and the bronchi, which are the airways leading into the lungs.

The main function of cilia is to move in coordinated, wave-like motions to move mucus and trapped particles out of our respiratory system. This mechanism, known as the mucociliary escalator, helps to clear our airways of foreign particles, such as dust, bacteria, and debris. By continuously beating in a synchronized manner, the cilia help propel the mucus and any trapped particles up and out of our airways, where they can be expelled through coughing or swallowing.

To verify this answer, you can consult reputable sources such as biology textbooks, medical encyclopedias, or online scientific databases that discuss the structure and functions of cilia in the respiratory system.