Lab 7: Lab Images • The learning objectives regarding this lab are testable on summative exam 2 and practical exam 2. • Note: On practical exam 2, you can be asked to identify any structure from the structure list on any of the images (photographs, figures, Complete Anatomy images) in this PowerPoint file. Nasal Cavity Nasal Cavity Proper Nasal Cavity * Roof = Floor = Medial wall = * Lateral Wall = Nasal Cavity Frontal Sinus Sphenoid Sinus Nasal Cavity Innervation CN I V1 V2 Sinus Drainage Site Innervation Frontal Middle meatus (semilunar hiatus) Ophthalmic n. (CN V1) Anterior ethmoidal cells Middle meatus (semilunar hiatus) Ophthalmic n. (CN V1) Middle ethmoidal cells Middle meatus from bulla Ophthalmic n. (CN V1) Posterior ethmoidal cells Superior meatus Ophthalmic n. (CN V1) Sphenoidal Sphenoethmoidal recess Ophthalmic n. (CN V1) Maxillary Middle meatus (semilunar hiatus) Maxillary n. (CN V2) All Turbinates have been removed in this dissection photo. Probe passing between Probe passing sphenoethmoidal recess between frontal and sphenoid sinus sinus and middle meatus Semilunar hiatus Ethmoid bulla with Sphenoid opening of middle ethmoid cells Sinus Probe passing between maxillary sinus and middle meatus Probe in nasolacrimal duct Paranasal Sinuses Sinus Drainage Site Innervation Frontal Middle meatus (semilunar hiatus) Ophthalmic n. (CN V1) Anterior ethmoidal cells Middle meatus (semilunar hiatus) Ophthalmic n. (CN V1) Middle ethmoidal cells Middle meatus from bulla Ophthalmic n. (CN V1) Posterior ethmoidal cells Superior meatus Ophthalmic n. (CN V1) Sphenoidal Sphenoethmoidal recess Ophthalmic n. (CN V1) Maxillary Middle meatus (semilunar hiatus) Maxillary n. (CN V2) Paranasal Sinuses https://3d4medic.al/nTJSrmfo Nasal Cavity Highlighted in Green Parnasal Sinus Imaging Different types of radiographic imaging show the paranasal sinuses (below: X-ray, left; CT, right). Paranasal sinuses are named for the bones in which they are located: frontal (F), maxillary (M), sphenoidal (S), and ethmoidal air cells (E). Note also, the mastoid air cells (MA), which “pneumatize” the mastoid process of the temporal bone. F E E S M M MA Source: Radiopedia Source: Radiopedia Paranasal Sinus Imaging Sagittal CT Scan 1 = Frontal Sinus 2 = Ethmoid Sinuses 3 = Sphenoid Sinuses 4 = Clivus 5 = Middle Concha (Turbinate) 6 = Inferior Concha (Turbinate) 7 = Hard Palate Tongue Tongue Soft Palate Uvula Tongue, Oral Part Tongue, Pharyngeal Part Terminal Sulcus Region of Lingual Tonsil Epiglottis Terminal Sulcus Epiglottic Vallecula Sublingual and Submandibular Glands and Ducts https://3d4medic.al/UHoJAIbh Tongue Muscles https://3d4medic.al/nLcJZUyv Tongue Muscles Pharynx Choana Nasopharynx Soft Palate Oropharynx Laryngopharynx (Hypopharynx) Epiglottis Nasopharynx Opening eustachian tube Torus Tubarius Pharyngeal tonsil (Adenoid) Pharyngeal Recess (Rosenmuller Fossa) Soft Palate Oropharynx Soft Palate Uvula Platine tonsil in = Sensory Distribution tonsillar fossa of Glossopharyngeal n. Oropharynx Terminal Sulcus Region of Lingual Tonsil Epiglottis Epiglottic Valleculae Pharyngeal Muscles https://3d4medic.al/h8MtBCjp Larynx Thyrohyoid m. Arrows represent abduction of vocal fold resulting from posterior cricoarytenoid muscle. Epiglottis Thyroid Sternothyroid Corniculate Cartilage m. (Cut) Cartilage Arytenoid Posterior Cricothyroid m. Cricoid Cartilage Cricoarytenoid m. Cartilage Posterior Cricoarytenoid m. Larynx Internal laryngeal n. Thyrohyoid m. Internal Piriform Laryngeal n Recess Internal Laryngeal n Laryngeal Laryngeal Prominence Prominence Thyroid Cartilage Cricothyroid m. Posterior (Cut) Cricoarytenoid m. Recurrent Laryngeal n. Recurrent Recurrent Cricoid Cartilage Laryngeal n. Laryngeal n. Larynx Epiglottis Laryngeal Inlet Ventricle False (Vestibular) Glottis Vocal Fold. (True) Vocal Fold Vocal Ligament Infraglottic Space https://3d4medic.al/qhfitYtx Hypoglossal n. Lingual a. Mylohyoid m. Digastric m. anterior belly.