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Assessment of Nose, Mouth & Pharynx Imran Waheed / Zafar Iqbal Lecturers
INS-KMU
Structure and function of Nose •Nose and paranasal sinuses are first segment of the respiratory system
•Responsible for receiving, filtering, warming, and moistening inhaled air
•Sensory organ for smell, because cranial nerve I (Olfactory) located in it.•Nose consists of two portions.– External and Internal 2
•Nose anatomy –Bridge is the superior part (nasal bone) –Tip is the anterior part of nose (cartilage) –Hair – Filter coarse matter from entering nasal cavity –Ciliated mucous membrane filters dust and bacteria.The rich blood supply warms and humidifies the air – Turbinates (conchae) increase the surface area of the nasal cavity so that more air is filtered, warmed, and humidified Structure and function of Nose 3
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