Chapter 1 Flashcards
Smiling muscles
orbicularis oculi levator labii superioris levator anguli oris zygomaticus major/minor risorius levator labii superioris alaeque nasi
Frowning muscles
orbicularis oris depressor anguli oris depressor labii inferioris corrugator supercilii platysma frontalis (occipitofrontalis) mentalis
Neck muscles
sternocleidomastoid
trapezius
Mastication muscles
masseter
temporalis
buccinator
Infrahyoid muscles
sternohyoid
omohyoid
sternothyroid
thyrohyoid
Suprahyoid muscles
digastric anterior/posterior belly and intermediate tendon
Facial nerve branches of CN VII
temporal zygomatic buccal mandibular cervical
Facial artery
on the face
suprahyoid muscles extra
geniohyoid
stylohyoid
mylohyoid
Face muscles extra
risorius corrugator supercilii frontalis zygomaticus minor mentalis levator labii superioris alaeque nasi
Neck muscles extra
platysma
Orbicularis oculi
palpebral part
orbital part
superficial muscles of face
levator labii superioris and depressor anguli oris
deep muscles of face
levator anguli oris, depresssor labii inferioris, mentalis
deepest muscles of face
masseter and buccinator
What covers the buccinator muscles?
buccal fat
facial muscles are superficial and insert?
onto the skin and/or other facial muscles, thus we can make facial expressions
The branches of the facial nerve traverse through?
the parotid gland
The buccal nerve is superficial to?
parotid gland
The temporalis muscle is imbedded into the skull in the?
temporal fossa
What vein is the most superficial?
external jugular vein, which crosses over the sternocleidomastoid muscle
The most superficial infrahyoid muscles?
sternocleidomastoid, sternohyoid, and portion of the omohyoid
salivary glands and ducts
parotid and submandibular glands
facial artery
brings a large supply of arterial blood to the facial muscles
The facial artery is a branch of the?
external carotid artery
What nerves are responsible for facial movement and facial sensation?
the facial nerve (CN VII) and the trigeminal nerve (CN V)
the facial nerve transmits
motor information to facial muscles from the brain
the trigeminal nervce carries
the bulk of the sensory information to facial muscles from the brain
trigeminal nerve
has 3 branches
Temporalis and masseter muscles (2 of the 3 muscles of mastication) are innervated by
the trigeminal nerve, specifically the mandibular branch, V3, to transmit motor output
Buccinator (3rd mastication muscle)
is innervated by the facial nerve
the digastric is innervated by 2 different nervces
facial and trigeminal
anterior belly of the digastric muscle is innervated by
the trigeminal nerve
posterior belly of the
digastric is innervated by
the facial nerve
Frontalis
temporal branch
corrugator supercilii
temporal branch
orbicularis oculi
temporal (superior); zygomatic (inferior) branch
zygomaticus major/minor
zygomatic and buccal branch
levator anguli oris
zygomatic and buccal branch
levator labii superioris alaeque nasi
zygomatic and buccal branch
buccinator
buccal branch
risorius
buccal branch
orbicularis oris
buccal and marginal mandibular branch
depressor anguli oris
marginal mandibular branch
depressor labii inferioris
marginal mandibular branch
mentalis
marginal mandibular branch
platysma
cervical branch
“the Elvis” muscle
levator labii superioris alaeque nasi
Swallowing has __ steps
5
step 1
the tongue and buccinator muscles move the food bolus towards the back of the mouth towards the pharynx.
step 2
the suprahyoid muscles pull the hyoid superiorly and anteriorly towards the mandible, which then widens the pharynx and moves the larynx under the epiglottis (remember, the larynx is anterior to the pharynx). The other 3 suprahyoid muscles that aid in “lifting” the hyoid bone are: stylohyoid, geniohyoid, and mylohyoid muscles
step 3
small muscles elevate the soft palate and close off nasal passages—these muscles are called tensor veli palatini and levator veli palatini. The palatini muscles that aid in elevation of the soft palate are located superiorly to the soft palate.
step 4
the food gets propelled inferiorly in the esophagus by pharyngeal constrictor muscles of the pharynx. The pharyngeal constrictor muscles include: the superior, middle, and inferior pharyngeal constrictor muscles. These muscles wrap themselves around the pharynx.
step 5
infrahyoid muscles “reset” the positions of the hyoid and larynx by pulling the hyoid posteriorly and inferiorly back into position, thus ending the act of swallowing
a dysfunction in the inability to swallow appropriately
oropharyngeal dysphagia
