This high-yield revision note on Deep Fascia of Neck & Deep Neck Spaces: Ludwig's Angina Explained covers everything examiners typically test under Oral Anatomy & Histology — structured as quick-reference tables, clinical correlations, mnemonics and previous-year-style high-yield points. It's built for last-mile revision before NEET MDS, INI-CET MDS and INBDE, so you can scan it in minutes instead of re-reading a whole textbook chapter.
| Fascia Layer | Encloses |
|---|---|
| Investing fascia | SCM, trapezius, submandibular, parotid, collar around neck |
| Pretracheal fascia | Thyroid, trachea, infrahyoid muscles, buccopharyngeal fascia anterior |
| Prevertebral fascia | Vertebral column, deep neck muscles, scalene |
| Carotid sheath | CCA/ICA, IJV, vagus, deep nodes - condensation of all 3 |
| Space | Between | Clinical |
|---|---|---|
| Retropharyngeal | Buccopharyngeal + Alar fascia | Spread to mediastinum |
| Danger space | Alar + Prevertebral fascia | Down to diaphragm - most dangerous |
| Ludwig's angina | Submandibular + Sublingual + Submental bilateral | Elevation tongue, airway obstruction, cellulitis not abscess |
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