Parotid gland Flashcards
how does the parotid gland vary between individuals
in size and shape and some have accessory glandular tissue that usually follows the path of the parotid duct across the cheek
what kind of tissue is the parotid gland
salivary gland - serous acini only
the duct of the salivary gland leaves the ____ side of the gland and crosses the anterior surface of ____
large duct that leaves the medial side of the gland and crosses the anterior surface of masseter
where is the duct of the parotid gland found
single duct 1 finger’s breadth below zygomatic arch
the parotid gland has a dense fibrous capsule that extends as what
stylomandibular ligament
the stylomandibular ligament intervenes between what
parotid and submandibular salivary glands
the duct of the parotid gland takes a sharp medial turn to pierce ____ to enter oral cavity where
buccal fat pad and buccinator
enter oral cavity at upper second molar
where does the duct of the parotid gland enter the oral cavity
upper second molar
when is the parotid gland palpable
if tense masseter muscle
what is the function of saliva
lubricate oral cavity and create a smooth food bolus that is easier to swallow
what is the parotid gland innervated with
parasympathetic secretomotor innervation from the glossopharyngeal nerve (CN IX)
what is buccinator
muscle of facial expression that forms the lateral walls of the oral cavity
how does the facial nerve exit the skull
via the stylomastoid foramen
the facial nerve passes into the parotid gland and does what
divides the gland into superficial and deep parts
Divides into branches that leave the gland and pass across the face to supply the muscles of facial expression
what supplies motor the muscles of facial expression
facial nerve CN VII
what are the branches of the facial nerve that arise from the parotid gland
temporal
zygomatic
buccal
marginal mandibular
cervical
what is the branch of the facial nerve that passes posterior to the auricle
posterior auricular
what does the posterior auricular nerve supply
posterior belly of occiptofrontalis (muscle of scalp that is also classes as a muscle of facial expression)
what is found deep to the facial nerve within the parotid gland
retromandibular vein
external carotid artery
the superficial temporal vein drains the scalp and joins with the _____ vein to form the ______ vein
the superficial temporal vein drains the scalp and joins with the maxillary vein to form the retromandibular vein within the parotid
what vein forms within the parotid and from what
retromandibular vein forms within the parotid from the superficial temporal vein and the maxillary vein
the retromandibular vein contributes to what
formation of external jugular vein
what artery enters the parotid gland and divides to form its terminal branches
external carotid artery
what are the terminal branches of the external carotid artery
superficial temporal artery and maxillary artery
what does the superficial temporal artery supply
scalp
where does the maxillary artery pass
into the infratemporal fossa
what is the deepest structure in the parotid gland
auriculotemporal nerve
the auriculotemporal nerve is a branch of what
branch of the trigeminal nerve
the auriculotemporal nerve runs with what
superficial temporal vessels
what are other superficial vessels in the face
posterior auricular vessels
transverse facial artery
facial vessels
what divides the parotid gland into deep and superficial parts
facial nerve CN VII
what nerve lies superficial to the parotid gland
greater auricular nerve
what muscle lies deep to the parotid gland
superior constrictor of pharynx
the parotid gland has lymph nodes that drain what
the gland
part of forehead and orbital region
what are the main groups of lymph nodes of the head and neck
parotid
mastoid
occipital
deep cervical
superficial cervical
submental
submandibular
the secretomotor parasympathetic nerves that supply the parotid gland are from what
glossopharyngeal nerve CN IX
why do the parasympathetic nerves to the parotid gland need to hitch a lift with part of the trigeminal nerve
main part of glossopharyneal nerve doesnt pass into the face
the trigeminal nerve (CN V) supplies what
sensory to face
the glossopharyngeal nerve exits the skull via
jugular foramen
post-ganglionic sympathetic fibres to the parotid gland are from where
plexus around ECA
as the glossopharyngeal nerve exits the skull via the jugular foramen, some preganglionic parasympathetic nerve fibres leave the mean part of the nerve to form
tympanic part
the tympanic part of the glossopharyngeal nerve passes where
into a plexus in the middle ear
the tympanic part of the glossopharyngeal nerve passes into a plexus in the middle ear, from this plexus a nerve called the ____ is formed
lesser petrosal nerve
from what is the lesser petrosal formed
plexus in the middle ear
the lesser petrosal nerve joins what
otic ganglion
where is the otic ganglion
lies at the opening of the foramen ovale
what happens in the otic ganglion
pre-ganglionic nerves from the glossopharyngeal nerve synpase with post-ganglionic parasympathetic nerves
the post-ganglionic parasympathetic nerve fibres from the otic ganglion are carried by what nerve
auriculotemporal nerve (branch of trigeminal)
what carries parasympathetic innervation to the deep part of the parotid gland
auriculotemporal nerve carries post-synaptic parasympathetic nerve fibres from the otic ganglion
