The image shows a labeled diagram of
the human respiratory system, with 14 numbered parts that need to be identified. Below is the correct identification for each number based on standard anatomical knowledge:
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Respiratory System Labeling:
1)
Nasal cavity
- The opening at the top of the nose where air enters.
2)
Nasopharynx
- The upper part of the pharynx, behind the nasal cavity.
3)
Larynx (voice box)
- Located below the pharynx; contains vocal cords and connects the pharynx to the trachea.
4)
Right lung
- One of the two lungs, located on the right side of the thoracic cavity.
5)
Left lung
- The lung on the left side of the body; slightly smaller due to the heart’s position.
6)
Diaphragm
- A dome-shaped muscle beneath the lungs that contracts during inhalation.
7)
External nares (nostrils)
- The external openings of the nose.
8)
Oropharynx
- The middle portion of the pharynx, behind the mouth.
9)
Epiglottis
- A flap of tissue that covers the larynx during swallowing to prevent food from entering the airway.
10)
Glottis
- The opening between the vocal cords in the larynx.
11)
Trachea (windpipe)
- A tube connecting the larynx to the bronchi; allows air to pass to the lungs.
12)
Bronchus (main bronchus)
- The large tubes branching off from the trachea into the lungs.
13)
Alveoli
- Tiny air sacs in the lungs where gas exchange (oxygen and carbon dioxide) occurs.
14)
Bronchioles
- Smaller branches of the bronchi that lead to the alveoli.
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✔ Summary Table:
| Number | Structure |
|--------|-------------------------|
| 1 | Nasal cavity |
| 2 | Nasopharynx |
| 3 | Larynx |
| 4 | Right lung |
| 5 | Left lung |
| 6 | Diaphragm |
| 7 | External nares (nostrils) |
| 8 | Oropharynx |
| 9 | Epiglottis |
| 10 | Glottis |
| 11 | Trachea |
| 12 | Bronchus |
| 13 | Alveoli |
| 14 | Bronchioles |
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📌 Explanation:
This diagram illustrates the pathway of air through the respiratory system:
- Air enters via the
nostrils (7) →
nasal cavity (1) →
nasopharynx (2) →
oropharynx (8) →
larynx (3) →
trachea (11) →
bronchi (12) →
bronchioles (14) →
alveoli (13).
- The
diaphragm (6) helps in breathing by contracting and relaxing.
- The
epiglottis (9) protects the airway during swallowing.
- Gas exchange happens in the
alveoli (13).
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Parent Tip: Review the logic above to help your child master the concept of the respiratory system worksheet fill in the blanks answers.
