Let's solve this step-by-step by identifying each labeled part of the
respiratory system in the diagram. The image shows a human torso with the respiratory organs, and each numbered label corresponds to a specific structure.
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Step 1: Understand the pathway of air
Air enters through the nose/mouth → nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles → alveoli → lungs → diaphragm helps with breathing.
Now let’s identify each number:
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Label Identification
1)
Nose – The external opening for air entry.
2)
Nasal cavity – Inside the nose; warms, moistens, and filters air.
3)
Pharynx (throat) – Common passage for air and food.
4)
Right main bronchus – Branch from trachea into the right lung.
5)
Right lung – One of the two lungs; has three lobes.
6)
Diaphragm – Primary muscle of respiration; contracts and flattens during inhalation.
7)
External nares (nostrils) – External openings of the nose.
8)
Hard palate – The bony front part of the roof of the mouth.
9)
Soft palate – The fleshy back part of the roof of the mouth; closes off nasal cavity during swallowing.
10)
Larynx (voice box) – Contains vocal cords; connects pharynx to trachea.
11)
Trachea (windpipe) – Tube that carries air from larynx to bronchi.
12)
Left main bronchus – Branch from trachea into the left lung.
13)
Alveoli – Tiny air sacs where gas exchange occurs (O₂ in, CO₂ out).
14)
Left lung – Has two lobes; slightly smaller than right lung to accommodate the heart.
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✔ Final Answer:
1)
Nose
2)
Nasal cavity
3)
Pharynx
4)
Right main bronchus
5)
Right lung
6)
Diaphragm
7)
External nares
8)
Hard palate
9)
Soft palate
10)
Larynx
11)
Trachea
12)
Left main bronchus
13)
Alveoli
14)
Left lung
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🔍 Explanation:
- This diagram illustrates the
upper and lower respiratory tract.
- Structures 1–10 are primarily involved in
air conduction (moving air).
- Structures 11–14 are involved in
gas exchange (lungs and diaphragm).
- The
diaphragm is crucial for breathing mechanics — it contracts to increase thoracic volume during inhalation.
This labeling helps understand how air travels from outside the body to the alveoli, where oxygen enters the blood and carbon dioxide is removed.
Let me know if you'd like a labeled version or a quiz based on this!
Parent Tip: Review the logic above to help your child master the concept of the human respiratory system worksheet.
