Anatomy study note · Head and neck

External nose

The external nose has a bony part (nasal bones, frontal processes of the maxillae, nasal part of the frontal bone) and a framework of hyaline nasal cartilages forming most of it.

Key points

• Bones above, hyaline cartilages below.
• Septum: bone + cartilage.
• Sensory: V1 (bridge/tip) + V2 (side).
• Nose: frontonasal + nasal processes.
• Septal + alar cartilages: unossified nasal capsule.
• Nasal cartilages: hyaline. Vestibule: vibrissae.
• Hyaline cartilage: type II collagen, perichondrium, avascular.

The full note in the atlas also covers

Features · Blood supply · Nerve supply · Histology · Development

Sign in free to see it on the 3D model, read the full note and practise questions on it.

Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 12, PDF pp. 1764–1766
• Inderbir Singh’s Human Embryology, ch. 10, PDF p. 141; ch. 11, PDF pp. 146, 151, 154–155
• BRS Cell Biology & Histology, 7th ed., ch. 7, PDF pp. 117–120; ch. 15, PDF pp. 268–269

More from the head and neck

• Eyelids and conjunctiva
• Facial bones of the orbit and nasal cavity
• Facial nerve
• Frontal bone
• Frontal lobe
• Genioglossus
• Geniohyoid
• Glossopharyngeal nerve
• Hippocampus
• Hyoglossus
• Hyoid bone
• Hypoglossal nerve

Privacy policy · Designed by DATXOC LLC.