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