Ch 48: Oropharynx

Question 1

Three main
subregions compose the oropharynx including the tonsil, base of tongue, and soft
palate_____

Answer 1

Three main
subregions compose the oropharynx including the tonsil, base of tongue, and soft
palate

Question 2

The ______are lymphoid aggregates incompletely
encapsulated with a keratinized stratified squamous epithelial mucosal lining
positioned in the tonsillar bed, a part of the tonsillar cleft between the anterior
(palatoglossal) and posterior (palatopharyngeal) tonsillar pillars

Answer 2

The palatine tonsils are lymphoid aggregates incompletely
encapsulated with a keratinized stratified squamous epithelial mucosal lining
positioned in the tonsillar bed, a part of the tonsillar cleft between the anterior
(palatoglossal) and posterior (palatopharyngeal) tonsillar pillars

Question 3

The base of tongue comprises the posterior third of the tongue and is bounded
anteriorly by the _____, sitting in front of the sulcus terminalis.

Answer 3

The base of tongue comprises the posterior third of the tongue and is bounded
anteriorly by the circumvallate papillae, sitting in front of the sulcus terminalis.

Question 4

The _____is a 1-
cm mucosal strip that serves as a transition between the base of tongue and
epiglottis and is considered a part of the base of tongue

Answer 4

The vallecula is a 1-
cm mucosal strip that serves as a transition between the base of tongue and
epiglottis and is considered a part of the base of tongue

Question 5

The sensory innervation
of the base of tongue is via the ______with a small
aspect of the base of tongue supplied by the internal laryngeal nerve (CN X).

Answer 5

The sensory innervation
of the base of tongue is via the glossopharyngeal nerve (CN IX) with a small
aspect of the base of tongue supplied by the internal laryngeal nerve (CN X).

Question 6

The soft palate is composed of five
muscles _______ posteriorly and the palatine aponeurosis
an expanded tendon of the tensor veli palatini anteriorly

Answer 6

The soft palate is composed of five
muscles (levator veli palatini, tensor veli palatini, palatoglossus,
palatopharyngeus, and musculus uvulae) posteriorly and the palatine aponeurosis
an expanded tendon of the tensor veli palatini anteriorly

Question 7

The muscles of the soft
palate are supplied through the pharyngeal plexus (which is composed of the
pharyngeal branches of cranial nerves IX and X and sympathetic branches from
the superior cervical ganglion, except for the tensor veli palatini, which is
supplied by ______). The sensory supply is from CN IX.

Answer 7

The muscles of the soft
palate are supplied through the pharyngeal plexus (which is composed of the
pharyngeal branches of cranial nerves IX and X and sympathetic branches from
the superior cervical ganglion, except for the tensor veli palatini, which is
supplied by cranial nerve V2). The sensory supply is from CN IX.