Pharynx and Larynx Flashcards
Pharyngeal constrictor Muscles
note only the superior part of all of these have attachments
Join at pharyngeal raphe
Superior: Sup part to pterygomandibular raphe + base of edge, free inferior edge
Middle:Attaches to stylohyoid ligament + lesser and greater horn of the mandible
Inferior: Oblique line of the thyroid cartilage
Longitudinal Muscles, for stabilisation
Salpingopharyngeus
Palatopharyngeus
Stylopharyngeus
At what level is pretracheal fascia got a different name?
What are the fascia to muscle orders
C6
Mucosa;PB muscle; BP; retropharyngeal space (lymphatics)
Oropharyngeal triangle contents
boundary is post mylohyoid, inf superior const, sup inf contri
Things that enter oral cavity
Stylopharyngeus; glossopharyngeal; lingual nerve and artery
Belw inferior
Recurrent laryngeal nerve, inferior laryngeal vessels
Recurrent laryngeal nerve from arch of aorta left, right subclavian
Below inferior
Recurrent laryngeal nerve, inferior laryngeal vessels
Recurrent laryngeal nerve from arch of aorta left, right subclavian
Mucosal feature of pharynx
Nasopharynx: Pharyngeal tonsil and pharyngotympanic tube
Oropharynx: Palatoglossal arch, palatopharygeal arch, palatine tonsil between. Lingual tonsil
Laryngoparynx: Inlet
Pharynx blood supply
Venous
Lymphatics
Innervation
A:Branches of EC
V: Superior: Pterygoid plexus, inferior: IJV
L: Deep cervical nodes, tonsils to jugulodigastric nodes
Innervation: Motor: Vagus except stylopharyngeus. Sensory: Naso- V2, oropharynx: glossoph, laryngopharynx, vagus
Laryngeal cartilages
Epiglottis
Thyroid cartilage: Oblique line, laryngeal prominence
Cricoid:
Arytenoid; On top corniculate
Thyroid ligaments
Extrinisc: Thyrpohyoid ligament
Intrinsic: Cricothyroid ligament, upper border is vocal ligament (between arytenoid and TC)
Quadrangular membrane forming vestibular ligament
Vocal lig is inferior and closer to midline
Larynx surface anatomy
Spaces: Sup-inf: Vestibule, middle, infraglottic
Epiglottis, pirform recess, vocal and vestibulr folds, inlet, vestibule
rima glottidis
cuneiform(lateral) and corniculate
Important muscle larynx
Cricothyroid( less important)
Posterior cricoarytenoid: abducts vocal cord!. If damaged, can not breath. One side damaged hoarse voice
Blood supply to larynx
Venous
Lymphatics
Innervation
A:Superior and inferior laryngeal from superior and inferior thyroid respectively
B: Sup and inf laryngeal veins
L: Follow veins
Innervation: Sensory: Sup and inf laryngeal
Motor: recurrent laryngeal except cricothyroid , inferior laryngeal
Tracheostomy
Cricothroidotomy
Tracheostomy: Midline incision for breathng tube
Cricothyroidotomy: Another airway management procedure
