The nasal bone forms the bridge of the nose and attaches to cartilaginous tissues that give the nose its shape. The nasal cavity warms or cools inhaled air and removes dust and particles through vibrissae. It has respiratory and olfactory segments, with the olfactory segment responsible for smell. The nasal cavity receives blood supply and innervation from various cranial nerves, including the nasociliary, nasopalatine, and posterior nasal branches of the maxillary nerve.

1. Nasal Bone & Nasal Cavity
Present by
M.Anandha Prabhakaran
Department of Biotechnology
Periyar Maniammai University

2. Nasal Bone
• The nasal bones are two small,
and different in individuals.
• Lie between maxillary bones and
join to form the bridge of the
nose.
• Attach to cartilaginous tissues -
shape for nose.

3. Nasal Cavity
• Function
• Segments
• Blood supply
• Innervation

5. Function
• Air passing through the nasal cavity is warmed
or cooled to within 1 degree of body
temperature.
• Dust and other particulate matter is removed
by vibrissae.

6. Segments
• Respiratory
segment: Mainly
for air flow In and
Out by epithelium
tissue
• Olfactory
segment: Sense
for smell

7. Nerve in nasal cavity
Sensory:
– Nasociliary nerve (V1)
– Nasopalatine nerve (V2)
– Posterior nasal branches of Maxillary nerve (V2)