The correct answer is **nose**.

### Explanation:
The nose is considered the primary entrance of the respiratory tract. It serves as the initial passage for inhaled air, filtering, warming, and humidifying it before it enters the lungs. The other options, while related to the respiratory system, do not serve as the main external entrance.

- **Oral cavity:** Although it can also serve as an entrance for air, it is primarily associated with the digestive system.
- **Trachea:** This is the windpipe that conducts air to the lungs but is not external.
- **Pharynx:** This part connects the mouth and nasal cavity to the esophagus and larynx but is not the external opening.

Thus, the nose is the most appropriate choice as the entrance to the respiratory tract.

Question

The correct answer is **nose**.

### Explanation:
The nose is considered the primary entrance of the respiratory tract. It serves as the initial passage for inhaled air, filtering, warming, and humidifying it before it enters the lungs. The other options, while related to the respiratory system, do not serve as the main external entrance.

- **Oral cavity:** Although it can also serve as an entrance for air, it is primarily associated with the digestive system.
- **Trachea:** This is the windpipe that conducts air to the lungs but is not external.
- **Pharynx:** This part connects the mouth and nasal cavity to the esophagus and larynx but is not the external opening.

Thus, the nose is the most appropriate choice as the entrance to the respiratory tract.

Knowee AI · Accepted Answer

The correct answer is **nose**.

### Explanation:
The nose is considered the primary entrance of the respiratory tract. It serves as the initial passage for inhaled air, filtering, warming, and humidifying it before it enters the lungs. The other options, while related to the respiratory system, do not serve as the main external entrance.

- **Oral cavity:** Although it can also serve as an entrance for air, it is primarily associated with the digestive system.
- **Trachea:** This is the windpipe that conducts air to the lungs but is not external.
- **Pharynx:** This part connects the mouth and nasal cavity to the esophagus and larynx but is not the external opening.

Thus, the nose is the most appropriate choice as the entrance to the respiratory tract.

The __________ is the entrance of the respiratory tract.Multiple Choiceoral cavitytracheapharynxnose

Question

The __________ is the entrance of the respiratory tract.

Solution

Explanation:

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