Respiratory System in Man (Respiration in Humans) - Life Process | Class 10 Biology

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Class: 10th
Subject: Biology
Chapter: Life Process
Topic Name: Respiratory System in Man (Respiration in Humans) (1.16)
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Points covered in this video:-

Respiration in Human:
Pharynx:
- The pharynx is a short vertical tube.
- The pharynx provides passage into trachea or windpipe through a slit like aperture, called glottis.
- The glottis always remains open except during swallowing.
- The glottis bears a leaf like cartilaginous flap, the epiglottis.
- During swallowing, the epiglottis closes the glottis to glottis to check the entry of food into it.

Trachea:
- Trachea is about 11 cm in length and 2.5 cm in diameter.
- Its wall has incomplete (C-shaped) cartilaginous rings,
- Trachea is lined internally by ciliated epithelium and mucus secreting cells.
- Trachea runs down the neck and extends into thoracic cavity or chest cavity.

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