H&N III: Pharynx & Larynx Flashcards
Left & Right Alar ligaments
- attachemnt: alar ligaments extend from the dens to the lateral margins of the foramen magnum
- action: control rotation and side-to-side movements of the head
Retropharyngeal space
- Superior: basilar part of the occipital bone
- Inferior: superior thoracic aperature
Inferior pharyngeal constrictor m
- Anterior attachments
- Oblique line of the thyroid cartilage
- Lateral surface: cricoid cartilage
- Posterior attachments
- Pharyngeal raphe
Middle pharyngeal constrictor m
- Anterior attachment: greater horn of the hyoid bone
- Posterior attachment: pharyngeal raphe
- inferior part lies deep to the inferior pharyngeal constrictor m.
Superior pharyngeal constrictor m
- Anterior attachment: pteryngomandibular raphe
- Posterior attachment: pharyngeal raphe and pharyngeal tubercle of the occipital bone
- *Note that the inferior part of the superior pharyngeal constrictor m lies deep to the *middle pharyngeal constrictor m
Pharyngobasiliar fascia
- Dense connective tissue membrane that attaches the superior edge of the superior pharyngeal constrictuor muscle to the base of the skull.
Stylopharyngeaus m
- Superiorly: ** medial surface of the styloid process**
- Inferiorly: inner aspect of the pharyngeal wall inferiorly
- Enters the pharyngeal wall by passing between the superior and middle pharyngeal constrictor m
- Innervation: glosspharyngeal n (CN IX)
**Sensory innervation to the mucosa that lines the interior larynx **
- Above: vocal folds is supplied by the internal branch of the superior laryngeal n.
- Below: incluind the vocal folds is derived from the recurrent laryngeal n.
At what point does the recurrent laryngeal n change names to the inferior laryngeal n.?
When the recurrent laryngeal n passes posterior the the cricothyroid joint it changes its name to the inferior laryngeal n.
What are the three components of the cruciate ligament?
-Superior longitudinal ligament -Transverse ligament of the atlas -Inferior longitudinal ligament
What forms the prevertebral muscles?
-longus colli -longus capitis
What forms the lateral vertebral muscles?
- anterior scalene m -middle scalene m -posterior scalene m
What cranial nerves give rise to the pharyngeal plexus?
-Glossopharyngeal n (IX): sensory to the pharyngeal mucosa -Vagus n (X): motor to the phe pharyngeal constrictor m -Superior cervical sympathetic ganglion: vasomotor.
What lies between the palatoglossal fold and palatopharyngeal folds?
Palatine tonsil
What forms the vocal ligament?
the thickened upper margin of the conus elasticus (or cricothyroid ligaments)
What covers the quadrangular membrane?
the inner surface of the aryepiglottic fold
The inferior fibers of the inferior constrictor m are continuous with what?
Circular fibers of the esophagus
