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)
