Head and Neck Anatomy in 25 Minutes

Laila Alshafai

Assistant Professor, Division of Neuroradiology Education Coordinator, Diagnostic Neuroradiology fellowship program Diagnostic Neuroradiologist, Head and Neck Imaging Mount Sinai Hospital & University Health Network Outline Head and Neck Anatomy Mucosa Spaces

• Nasopharynx • Suprahyoid • Oropharynx Parapharygeal (PPS) • Oral cavity Masticator • Larynx Submandibular Sublingual • Hypopharynx Parotid

• Infrahyoid Visceral Posterior Cervical Anterior Cervical

• Both Carotid Retropharyngeal /Dangerous Perivertebral Important Openings/Pathways Outline Head and Neck Anatomy http://www.headandneckrad.com Nasopharynx Head and Neck Anatomy Nasopharynx Head and Neck Anatomy Nasopharynx Head and Neck Anatomy

Fossa of Rosenmuller Nasopharynx Head and Neck Anatomy

Fossa of Rosenmuller Nasopharynx Head and Neck Anatomy

Eustachian tube opening

Torus Tubarius Nasopharynx Head and Neck Anatomy

Torus Tubarius Nasopharynx Head and Neck Anatomy Nasopharynx Head and Neck Anatomy

Parapharyngeal space

Tensor Veli Palatini

Levator Veli Palatini Nasopharynx Head and Neck Anatomy Parapharyngeal space Nasopharynx Head and Neck Anatomy

Pterygopalatine Fossa Nasopharynx Head and Neck Anatomy

Pterygopalatine Fossa Nasopharynx Head and Neck Anatomy

Adenoid hypertrophy in young patients Oropharynx Head and Neck Anatomy Oropharynx Head and Neck Anatomy Oropharynx Head and Neck Anatomy

Palatine tonsil

Anterior tonsillar pillar

Posterior tonsillar pillar Oropharynx Head and Neck Anatomy

Young Oropharynx Head and Neck Anatomy

Tongue base Oropharynx Head and Neck Anatomy

Vallecula Oropharynx Head and Neck Anatomy

Vallecula

Glossoepiglottic fold

Epiglottis Oropharynx Head and Neck Anatomy

Lingual tonsils

Pharyngoepiglottic fold Oral Cavity Head and Neck Anatomy

Anatomic subdivisions:

• Lips • Floor of mouth • Oral tongue (anterior 2/3rds) • Buccal mucosa • Upper and lower gingivae • Hard palate • Retromolar trigone Oral Cavity Head and Neck Anatomy

Oral Cavity Head and Neck Anatomy

Oral tongue Oral Cavity Head and Neck Anatomy

Oral tongue Oral Cavity Head and Neck Anatomy

Lingual artery Oral Cavity Head and Neck Anatomy

Floor of mouth Oral Cavity Head and Neck Anatomy

Sublingual gland Oral Cavity Head and Neck Anatomy

Glosso-mylohyoid Gap Oral Cavity Head and Neck Anatomy

Mylohyoid Muscle Anterior belly of Digastric muscle Oral Cavity Head and Neck Anatomy

Mylohyoid Muscle

Anterior belly of Digastric muscle Oral Cavity Head and Neck Anatomy

Sublingual Space = Floor of mouth

Submandibular Space Mylohyoid Muscle Oral Cavity Head and Neck Anatomy

Sublingual Space = Floor of mouth

Mylohyoid muscle dehiscence Oral Cavity Head and Neck Anatomy

Buccinator muscle Buccal mucosa Oral Cavity Head and Neck Anatomy

Buccinator muscle Buccal mucosa Oral Cavity Head and Neck Anatomy

Retromolar trigone

* * Oral Cavity Head and Neck Anatomy

Buccal cortex

Lingual cortex Larynx Head and Neck Anatomy Larynx Head and Neck Anatomy Supraglottic Larynx Head and Neck Anatomy Larynx Head and Neck Anatomy Glottic

Larynx Head and Neck Anatomy

Subglottic Head and Neck Anatomy

Hypopharynx Head and Neck Anatomy

3 main regions:

Hypopharynx Head and Neck Anatomy

Pyriform Sinus

Hyoid Bone

Thyroid Cartilage Arytenoid Cartilage Hypopharynx Head and Neck Anatomy

Masticator Space/Parotid Space Head and Neck Anatomy

Parotid duct Submandibular/Sublingual Spaces Head and Neck Anatomy Carotid Space Head and Neck Anatomy Retropharyngeal/Dangerous Space Head and Neck Anatomy