Head and Neck Anatomy Pre-Practical Lecture Flashcards
what does the ethmoid bone form?
part of the floor of the cranial cavity, part of the lateral wall of the nose and the nasal septum
what is a meatus?
the space that lies underneath the projecting concha
what does the siphon-ethmoid recess open into?
spenoid sinus?
what does the superior meatus open onto?
posterior ethmoid air cells
what does the middle meatus open onto?
maxillary sinus
frontal sinus
anterior ethmoidal air cells
middle ethmoidal air cells
what does the inferior meatus open onto?
nasolacriimal duct
is the temporalis and masseter superficial or deep muscles?
superficial
are the pterygoids superficial or deep muscle?
deep
muscles of the tongue
genioglossus
styloglossus
hypoglossus
palatoglossus
what innervates the muscles of the tongue except palatoglossus?
hypoglossal nerve XII
where does the hypoglossal nerve emerge from?
from the Hypoglossal canal and comes in from under (hypo) the tongue
action of the genioglossus
protrudes
action of the styloglossus
retracts
action of the hyoglossus
depresses
innervation of the palatoglossus
Pharyngeal Plexus (X)
action of the palatoglossus
Is actually a palatal muscle and helps to narrow the oropharynx in
swallowing
action of the intrinsic muscles of the tongue
Alter shape of the tongue
what are the muscles of the vocal cords innervated by? (except cricothyroid)
recurrent laryngeal nerve
what is the cricothyroid innervated by?
superior laryngeal nerve
action of the cricothyroid muscle
tenses and elongates the vocal cord
what type of muscles are in the pharynx?
circular and longitudinal
what innervates the stylopharyngeus?
IX
what innervated the pharynx apart from the stylopharyngeus
X
