Anatomy Flashcards
platysma innervation
cervical branch of facial nerve (VII)
external jugular vein location
posterior mandible and superficial to SCM
drains into subclavian vein
cutaneous branches of cervical plexus
lesser occipital
great auricle
transverse cervical
supraclavicular
lesser occipital nerve innervates
scalp behind the ear
great auricular nerve innervates
skin of lower ear, over parotid gland, and angle between mandible and mastoid process
lesser occipital nerve location
parallel to posterior boarder of SCM
great auricular nerve location
up towards front of ear
top most superficial nerve to SCM
transverse cervical nerve location
transverse across SCM
transverse cervical nerve innervates
skin of anterior neck triangle
supraclavicular nerve location
down towards clavicle
supraclavicular nerve innervates
skin over shoulder
accessory nerve location
on top of levator scapulae m, under the investing fascia
near internal jugular v
veins forming external jugular vein
retromandibular v
posteiror auricular v
anterior jugular vein drains into
external jugular v
hyoid depressors
sternohyoid
omohyoid
larynx depressors
sternothyroid
larynx elevators
thyrohyoid
anterior digastric belly innervation
mylohyoid nerve from mandibular division of trigeminal nerve (V3)
posterior digastric belly innervation
facial nerve (VII)
hyoid elevators
digastrics
stylohyoid
mandible depressors
digastrics
location of intermediate tendon of digastric
hyoid bone
stylohyoid muscle innervation
facial nerve (VII)
relationship of facial artery and vein to submandibular gland
vein is superficial
artery is deep
hypoglossal nerve location
deep to posterior belly of digastric
near internal carotid artery (and external carotid artery) by mandible
goes between mylohyoid and hyoglossus muscles to enter mouth
stylohyoid location
really close to the the posterior belly of digastric
attaches around the intermediate tendon of the digastric m
facial vein drains into
internal jugular vein
ansa cervicalis location
around internal jugular vein
internal branch of superior laryngeal nerve goes through
thyrohyoid membrane
external branch of superior laryngeal nerve innervates
crithyroid m
inferior pharyngeal constrictor
cricothyroid location
right under thyroid cartilage (tiny)
between the cricoid and thyroid cartilages
internal jugular vein receives blood from
common facial vein
superior thyroid vein
middle thyroid vein
where does the facial artery come from
branch of external carotid artery
superior laryngeal artery comes from
superior thyroid artery (external carotid branch)
location of superior laryngeal artery
goes through the thyrohyoid membrane with the internal branch of superior laryngeal nerve
occipital artery supplies
part of scalp
posterior auricular artery supplies
part of scalp
innervation of carotid body and carotid sinus
IX and X
vagus nerve location
in carotid sheath behind the internal jugular v and common carotid a
thyroid gland location
C5-T1
pyramidal lobe of thyroid
extending superiorly from isthmus
remnant of embryonic development showing the descent of the thyroid gland
inferior thyroid veins drain into the
brachiocephalic veins
what nerve can be injured by a thyroid tumor or a thyroidectomy
recurrent laryngeal nerve
parathyroid gland location
posterior thyroid- 4 little balls
what forms the brachiocephalic vein
internal jugular and subclavian veins
divisions of subclavian artery
first- prior to medial boarder of anterior scalene m
second- behind the anterior scalene m
third- beyond the lateral boarder of anterior scalene m
branches of first part of subclavian artery
vertebral
internal thoracic
thyrocervical trunk
branches of thyrocervical trunk
transverse cervical
suprascapular
inferior thyroid–> ascending cervical artery
branches of costocervical trunk
supreme intercostal deep cervical
vertebral artery goes between which muscles
anterior and middle scalene
where is dorsal scapular artery
passes between the superior and middle trunks of brachial plexus to get to the scapular region
phrenic nerve location
anterior to anterior scalene m
location of inferior cervical ganglion
near superior thoracic aperature
muscles of floor of posterior triangle from anterior to posterior
anterior scalene middle scalene posterior scalene levator scapulae splenius capitis
structures passing between the anterior and middle scalene m
subclavian artery
brachial plexus
path of parotid duct
crosses over masseter muscle and then turns medially to pierce the buccinator muscle
enters mouth at second maxillary molar
branches of facial nerve inside the parotid gland
temporal zygomatic buccal mandibular cervical
path of temporal branch of VII
crosses zygomatic arch
path of zygomatic branch of VII
crosses zygomatic bone
path of buccal branches of VII
superficial to masseter muscle
parallel to parotid duct
path of manidbular branch of VII
parallel to inferior mandible margin
path of cervical branch of VII
crosses over mandible to enter neck
difference between buccal branch of VII and buccal nerve of V3
buccal branch of VII- motor to buccinator
buccal nerve of V3- cutaneous sensory over buccinator and to mucosa of cheek
path of facial artery
under mandible
posterior to submandibular nerve
comes up anterior to master
goes towards angle of mouth
branches of facial artery
superior and inferior labial arteries
angular artery comes from
facial artery changes name when it gets to the lateral nose
orbicularis oculi m innervation
temporal and zygomatic branches of VII
zygomaticus major innervation
zygomatic and buccal branches of VII
buccinator innervation
buccal branches of VII
levator labii superioris innervation
buccal branches of VII
orbicularis oris innervation
buccal and mandibular branches of VII
depressor angularis oris innervation
mandibular branch of VII
3 branches of trigeminal nerve that do face sensory
supraorbital- V1
infraorbital- V2
mental- V3
supraorbital nerve of V1 passes through what
supraorbital notch
infraorbital nerve of V2 passes through what
infraorbital foramen- covered by levator labii superiors
what goes infraorbital foramen
infraorbital nerve
infraorbital artery
infraorbital vein
mental nerve exits through
mental foramen- covered by depressor angel kris muscle
what goes through mental foramen
mental nerve - V3
mental artery
mental vein
path of auriculotemporal nerve
V3 branch
between head of mandible and external acoustic meatus
crosses zygomatic process
passes through parotid gland
auriculotemporal nerve function
cutaneous innervation of skin of anterior ear and temporal region
delivers post para fibers from otic ganglion to parotid gland
what forms the retromandibular vein
maxillary vein
superificial temporal vein
things that go through the parotid gland
motor facial nerve branches
auriculotemporal nerve (V3)
superficial temporal a and v
where does the external carotid artery divide into terminal branches
neck of mandible
where is the occipitofrontalis muscle
frontalis- forehead
occipito- back of head
forms the aponeurosis layer of the scalp
vessels supplying scalp
supraorbital (ophthalmic) supratrochelar (ophthalmic) superficial temporal (ECA) posterior auricular (ECA) occipital (ECA)
innervation of scalp
supratrochlear (V1) supraorbital (V1) zygomaticotemporal (V1) auriculotemporal (V3) lesser occipital (cervical plexus) greater occipital
contents of infra temporal fossa
medial and lateral pterygoid m
mandibular division branches
maxillary vessels and branches
bones of temporal fossa
parietal
frontal
squamous part of temporal
greater wing of sphenoid
lingula of mandible
attachment of sphenomandibular ligament
on inside of ramus
what goes through mandibular foramen
inferior alveolar nerves and vessels
what is in mylohyoid groove
mylohyoid nerves and vessels
pterygomaxillary fissure
between the lateral plate of pterygoid process and maxilla
pterygopalatine fossa
superior end of pterygomaxillary fissure
sphenopalatine foramen
opening in medial wall of pterygopalatine fossa entering nasal cavity
lingual nerve of V3 innervates
sensory to mucosa of anterior 2/3 of tongue and oral cavity
maxillary artery origination
infratemporal fossa
branches of maxillary artery in infra temporal fossa
middle meningeal deep temporal masseteric inferior alveolar buccal
path of middle meningeal artery
splits off medial to neck of mandible
deep to lateral pterygoid m
auriculotemporal nerve splits around it
enters foramen spinosum to get into middle cranial fossa
middle meningeal artery supplies the
dura mater
masseteric artery path
goes through mandibular notch to get to master muscle
path of inferior alveolar artery
enters mandibular foramen with inferior alveolar nerve
buccal artery path
anterior to get onto buccinator
lateral pterygoid m attachment
attaches to TMJ
medial pterygoid m location
attaches to the angle of the mandible
nerves going between the pterygoid muscles
lingual nerve
inferior alveolar nerve
lateral ligament of TMJ
from zygomatic arch to the mandible
location of dural venous sinuses
between the periosteal and meningeal layers of the dura mater
purpose of arachnoid granulations
dilations of arachnoid mater protruding into the dural venous sinus that return CSF to the venous system
epidural hematoma
middle meningeal artery rupture from lateral blow to the head (pterion ruptures anterior branch of middle meningeal artery)
blood accumulates between the dura and the bone
football shaped
subdural hematoma
rupture of cerebral veins due to frontal blow to the head
bleed between the dura and arachnoid mater (subdural)
subarachnoid space
CSF location
central sulcus
coronal division between the frontal and parietal lobes
lateral sulcus
transverse division between frontal and temporal lobes
components of the circle of willis (cerebral arterial circle)
posterior cerebral posterior communicating internal carotid anterior cerebral anterior communicating
inferior brain location of CN III
most medial between pons and midbrain
right at split of superior cerebellar and posterior cerebral
inferior brain location of CN IX
lateral between pons and midbrain
bewteen posterior cerebral and superior cerebellar
trigeminal nerve location on inferior brain
large, 2 components coming out of pons
CN VI location on inferior brain
anterior to anterior inferior cerebellar artery between the pons and brainstem
CN VII location
middle branch out of pons anterior inferior cerebellar a
CN VIII location
lateral branch out of pons, anterior to anterior inferior cerebellar a
CN IX location
between pons and olive, top most
vagus nerve location infeiror brain
large between pons and olive
accessory nerve location inferior brain
coalescing of rootlets most posterior
hypoglossal nerve location inferior brain
comes out as rootlets from olive
middle meningeal artery goes through the
foramen spinosum
nerves through superior orbital fissure
III
IV
VI
V1
which nerve is very close to the internal carotid artery inside the cavernous sinus
abducent (VI) nerve
nerves along the lateral wall of cavernous sinus
III
IV
V1
V2
nerves in the cavernous sinus
abducent VI
what is in the jugular foramen
sigmoid sinus
IX, X, XI
where is the sympathetic trunk
anterior, left side of cervical vertebral column
cervicothoracic (stellate) ganglion
fused inferior cervical and first thoracic ganglion
inferior pharyngeal constrictor does not attach to the
hyoid
middle pharyngeal constrictor attaches to the ___ and is under the
hyoid
inferior pharyngeal constrictor
stylopharyngeus muscle goes between
superior and middle pharyngeal constrictor
innervation of stylopharyngeus
glossopharyngeal nerve (IX)
glossopharyngeal nerve entering pharynx
passes posterior and lateral to the stylopharyngeus m and enters between the superior and middle pharyngeal constrictors
what is the torus tubarius
cartilage of Eustachian tube covered by mucosa
salpingopharyngeal fold
runs down and back from the torus tubarius
pharyngeal recess
posterior to torus tubarius
pharyngeal tonsil location
above the pharyngeal recess
palatoglossal fold
anterior most fold
palatopharyngeal fold
posterior most fold
fauces
transitional region between the oral cavity and oropharynx
palatine tonsil location
between the palatoglossal and palatopharyngeal folds
role of lateral nasal cartilage
shape to bridge of nose
role of septal cartilage
separates right and left nasal cavities
role of alar cartilage
shape to sides of nostril
path of sphenopalatine artery and nasopalatine nerve
from the sphenopalatine foramen
down diagonally across the nasal septum
through incisive canal
opening of nasolacrimal duct
inferior nasal meatus
semilunar hiatus
curved slit in middle meatus
ethmoidal bulla
budge posterior to the semilunar hiatus and above the opening of the maxillary sinus
palatoglossus m function
elevate tongue and depress soft palate
palatopharyngeus m function
elevates larynx during swallowing
salpingopharyngus m function
elevates larynx during swallowing (blends with palatopharyngeus)
location of tensor veli palatini m
in the pterygoid fossa
wraps around the humans of the medial pterygoid plate
5 muscles of soft palate and pharynx innervated by the vagus nerve
salpingopharyngeus levator veli palatini palatoglossus platopharyngeus musculus uvule
muscles of soft palate innervated by the glossopharyngeal nerve
stylopharyngeus
muscles of soft palate innervated by mandibular division of V
tensor veli palatini
muscles innervated by hypoglossal nerve
genioglossus
styloglossus
hyloglossus
where is the glossopharyngeal nerve in the mouth
in the tonsillar bed (between the palatoglossal and palatopharyngeal folds)
cricothyroid m innervatiotn
external branch of superior laryngeal nerve (X)
what is in the piriform recess
internal branch of superior laryngeal nerve
inferior laryngeal nerve
where does the recurrent laryngeal nerve change names
passing the cricothyroid joint
becomes the inferior laryngeal nerve
what muscle opens the rima glottidis
posterior cricoarytenoid m
high pitched voice
cricoarytenoid m
low pitched voice
thyroarytenoid m
external branch of superior laryngeal nerve innervates
cricothyroid m
inferior pharyngeal constrictor
infeiror laryngeal branch of recurrent laryngeal nerve
thyroarytenoid
posterior cricoarytenoid
lateral cricoarytenoid