Exam 1 Flashcards
Nasal cavity location
Space between the nares (nostrils)
Nasal cavity anterior border
Nostrils (nares) + vestibule
Posterior border of nasal cavity
Choanae + nasopharynx
Nasal cavity inferior border
Oral cavity, hard + soft palate
Nasal cavity superior border
Cribiform plate of ethmoid bone
What separates the nasal cavity?
Vomer and perpendicular plate of ethmoid
Nasal cavity function
Warms, moistens + cleanses air. Olfaction
Anterior border of nasopharynx
Choanae
Nasal concha
3 major projections off the lateral wall of Choanae
What drains into the superior nasal meatus
Posterior ethmoid air cells (sinus) + sphenoid sinus
What drains into the middle nasal meatus
Frontal sinus, anterior + middle ethmoid air cells (sinus), maxillary sinus
What drains into the inferior nasal meatus
Nasolacrimal duct
Inferior 2/3 of mucosa
respiratory. Ciliated cells + goblet cells
Superior or posterior 1/3 of mucosa
Olfactory. Smell receptors
Posterior-inferior portion of nasal cavity Innervation
CN V1
Anterior-superior portion of nasal cavity Innervation
CN V1
External nose portion of nasal cavity Innervation
CN V1
Alar nasal portion of nasal cavity Innervation
CN V2
Arterial supply to nasal cavity
Sphenopalatine artery + anterior ethmoidal artery
Oral cavity roof
Hard + soft palates
Oral cavity floor
Tongue + sublingual mucosa
Oral cavity anterior + lateral border
Lips, cheeks, teeth
Oral cavity posterior border
Faucial isthmus
Vestibule part of oral cavity
Between lips/cheeks + gums
Oral cavity proper
Internal to teeth. Occupied by tongue
What makes up the faicial isthmus
Palatopharyngeal folds + palatoglossal folds
Tongue function
Gustation (taste), mastication (chewing), deglutition (swallowing), + articulation (speech)
Terminal sulcus of tongue
Separate the anterior + posterior parts of the tongue
Midline sulcus of tongue
Vertical sulcus in anterior tongue
Genioglossus Innervation
CN XII
Genioglossus action
Protrude + depress tongue. Draws tip back + down. Unilateral contraction
hyoglossus Innervation
CN XII
hyoglossus action
Retracts + depresses tongue
Styloglossus Innervation
CN XII
Styloglossus action
Retraction + elevation of tongue. Creates trough when swallowing
Palatoglossus action
Raises posterior part of tongue, drawing tongue to soft palate, closes oropharyngeal isthmus
Palatoglossus Innervation
CN X and CN XI
What is another name for palatoglossus m?
Glossopalatinus
Superior longitudinal m Innervation
CN XII
Superior longitudinal m action
Curls tongue upward in longitudinal direction. Shortens + thickens tongue
Inferior longitudinal m Innervation
CN XII
Inferior longitudinal m action
Curls tongue downward in longitudinal direction; shortens + thickens tongue
Verticalis Innervation
CN XII
Verticalis action
Flattens + broadens tongue
Transversus Innervation
CN XII
Transversus action
Narrows + elongates tongue
Sensory innervation of anterior 2/3 of tongue
CN V3 + CN VII
Sensory innervation of posterior 1/3 tongue
CN IX + CN X
Motor innervation of tongue
CN XII
Arterial supply of tongue
Lingual artery
Venous drainage of tongue
Lingual veins
what is the cervical plexus formed by
ventral rami of C1-C4
phrenic n function
motor to diaphragm
what are the branches off of the ECA
superior thyroid artery, ascending pharyngeal artery, lingual artery, facial artery, occipital artery, posterior auricular artery, maxillary artery, + superficial temporal artery
what does superior thyroid artery supply
upper pole of thyroid gland + larynx
what does the ascending pharyngeal artery supply
pharynx
what does the lingual artery supply
tongue
what does the facial artery supply
the face
what does the occipital artery supply
posterior scalp + SCM
what does posterior auricular artery supply
parotid gland, facial nerve, temporal bone structures, auricle, + scalp
what does the maxillary artery supply
deep structures of the face
what does the superficial temporal artery supply
scalp
what arteries are involved in migraine headaches
superficial temporal artery + occipital artery
what are the branches off of the subclavian artery
vertebral artery, internal thoracic artery, thyrocervical trunk, costocervical trunk
what does the internal thoracic artery supply
anterior chest wall, pecs, breast
what are the thyrocervical trunk divisions
inferior thyroid artery, suprascapular artery, transverse cervical artery
what does the inferior thyroid artery supply
inferior pole of thyroid gland
what does the suprascapular artery supply
supraspinatus, SCM, subclavius m
what does the transverse cervical artery supply
trapezius + SCM
carotid sinus
sensitive to blood pressure changes
carotid body
senses changes in blood carbon dioxide levels
inferior vena cava function
returns blood from below heart
superior vena cava function
returns blood from above heart
venous angle
where internal jugular vein + subclavian vein join to form the brachiocephalic vein
what joins to form the retromandibular vein
superficial temporal vein + maxillary vein
what do the superior + middle thyroid veins drain into
internal jugular vein
what does the inferior thyroid vein drain into
R + L brachiocephalic vein
lymphatic system function
allow passage of larger molecules from fluid in bloodstream, produce lymphocytes, collect tissue fluids + proteins
lymph
interstitial fluid that makes its way to lymph nodes
lymph nodes
pea sized enlargements that produce lymphocytes. filter lymph
what are the superficial cervical nodes
submandibular, submental, anterior cervical, pericervical collar
what are the deep cervical nodes
superior deep cervical, inferior deep cervical
what drains into the submandibular node
nasal cavity, sinuses, tongue, salivary glands, upper/lower lip, gums, cheeks, conjunctiva
what drains into the submental node
tongue tip, central lower lip, mouth floor, teeth, cheek
what drains into the anterior cervical node
thyroid, larynx, pharyngeal
what is the pericervical collar
the space from occipital node to submandibular node + everything in between
what do the superficial cervical nodes drain into
the deep cervical nodes
what do the deep cervical nodes drain
head, neck, tongue, larynx, cervical parts of the esophagus/trachea, thyroid gland, upper parts of thoracic wall/breast
what does the right lymphatic duct drain into
right venous angle
where does the right lymphatic duct receive lymph from
right half of head, neck, thorax, right upper limb
what does the thoracic duct drain into
left venous angle
where does the thoracic duct receive lymph from
everywhere else (not right lymphatic duct)
cisterna chyli
most inferior part of thoracic duct
where does cisterna chyli drain lymph from
abdominis
what is it called when the supraclavicular node is enlarged on the LEFT
virchow’s node/trossiers sign
what does trossier’s sign usually indicate
GU, GI, + pulmonary cancers
what is the arterial supply to the thyroid gland
superior + inferior thyroid arteries
what is the venous supply to the thyroid gland
superior, middle, + inferior thyroid veins
what is the thyroid ima artery
a branch from the brachiocephalic trunk or aortic arch in 4-15% of people
thyroid gland lymphatic drainage
deep cervical nodes
thyroid gland innervation
CN X
what does the thyroid gland produce
thyroxine + triiodothyronine
how many parathyroid glands are there
4
parathyroid gland function
produce parathyroid hormone
parathyroid gland arterial supply
superior + inferior thyroid arteries
parathyroid gland venous supply
superior, middle, + inferior thyroid veins
parathyroid gland lymphatic drainage
deep cervical nodes
parathyroid gland innervation
CN X
what is the rima glottidis
space between the vocal folds
larynx
regulation of air to the lungs + helps with vocalization
thyroid cartilage
forms an incomplete ring
parts of thyroid cartilage
2 laminae (flat surfaces), superior horn, inferior horn, + oblique line
oblique line of thyroid cartilage
attachment for inferior pharyngeal constrictor, sternothyroid, + thyrohyoid
epiglottis
single piece of cartilage covered in mucosa that prevents food from getting into the larynx
cricoid cartilage
forms a complete ring (signet ring cartilage)
arytenoid cartilage
paired/pyramidal shaped. located posteriorly
vocal process of arytenoid cartilage
attachment for vocal ligament
muscular process of arytenoid cartilage
attachment for intrinsic muscles of the larynx
cricothyroid joint
synovial, rotation
cricoarytenoid joint
synocial, glide
infrahyoid muscles
omohyoid, sternothyroid, sternohyoid, + thyrohyoid
suprahyoid muscles
stylohyoid, mylohyoid, digastric, geniohyoid
where does the R recurrent laryngeal n make a “u-turn”
under the subclavian artery
where does the L recurrent laryngeal n make a “u-turn”
under the aortic arch
what is the recurrent laryngeal n a branch off of
CN X
extrinsic larynx muscles origin
outside the larynx
extrinsic larynx muscles
omohyoid, sternothyroid, sternohyoid, thyrohyoid, stylohyoid, mylohyoid, digastric, geniohyoid, stylopharyngeus
intrinsic larynx muscles origin
inside the larynx
intrinsic larynx muscles
posterior cricoarytenoid, lateral cricoarytenoid, transverse arytenoid, oblique arytenoid, cricothyroid, vocalis, aryepiglottic, thyroepiglottic
intrinsic larynx muscles innervation is ____ EXCEPT _____
recurrent laryngeal n; cricothyroid m
aryepiglottic m action
closes laryngeal inlet
thyroepiglottic m action
opens the laryngeal inlet
posterior cricoarytenoid action
abducts vocal folds + widens the rima glottidis WITH rotation
lateral cricoarytenoid m action
closes rima glottidis + adducts vocal folds WITH rotation
transverse arytenoid m action
closes rima glottidis + adducts vocal folds W/O rotation
oblique arytenoid m action
closes rima glottis + adducts vocal folds by PULLING cartilage together
cricothyroid m action
tenses vocal cords + raises pitch
cricothyroid m innervation
external laryngeal n
vocalis + thyroarytenoid action
shortens cords
what is the vocalis m connected to?
the vocal folds
what is the thyroarytenoid m connected to
vestibular folds
vestibular folds
superior folds, false vocal cords
vocal folds
true vocal cords
ventricle of the larynx location
between the vestibular folds + vocal folds
ventricle of the larynx function
secrete lubrication for vocal cords
what muscles act on the cricothyroid joint
cricothyroid m + vocalis m
what muscles act on the cricoarytenoid joint
posterior cricoarytenoid m + adductors
where does internal laryngeal n innervate
sensory to mucosa above vocal cords
where does exterior laryngeal n innervate
motor to cricothyroid m
palate
separates nasal cavity from oral cavity
hard palate
maxillae + palatine bones covered by mucosal glands
soft palate
posterior to hard palate, terminates at the uvula
what are the 4 palate muscles
levator veli palatini, tensor veli palatini, musculus uvulae, palatoglossus
levator veli palatini action
raises soft palate + opens auditory tube
levator veli palatini innervation
pharyngeal branch of CN X
tensor veli palatini action
tenses soft palate, open auditory tube
tensor veli palatini innervation
CN V3 (mandibular branch)
musculus uvulae action
raises uvula
palatoglossus action
raises posterior part of tongue (brings tongue to soft palate)
palatoglossus innervation
pharyngeal branch of CN X
what is another name for the palatoglossus m
glossopalatinus
pharynx
muscular tube behind nose, mouth, + larynx
nasopharynx
superior division of pharynx
nasopharynx function
communicate with the nasal cavity through posterior nasal aperture
oropharynx
middle division of pharynx
oropharynx function
communicates with the oral cavity through the oropharyngeal isthmus
laryngopharynx
inferior division of pharynx
laryngopharynx function
communicates with the larynx through the laryngeal isthmus
nasopharynx superior border
sphenoid + occipital bone
nasopharynx inferior border
soft palate
nasopharynx anterior border
nasal choanae
nasopharynx posterior border
posterior wall of the pharynx
oropharynx superior border
soft palate
oropharynx inferior border
posterior 1/3 of tongue + epiglottis
oropharynx anterior border
faucial isthmus
oropharynx posterior border
posterior wall of pharynx
what makes up the faucial isthmus
palatopharyngeal fold + palatoglossal fold
laryngopharynx superior border
epiglottis
laryngopharynx inferior border
inferior border of cricoid cartilage
laryngopharynx anterior border
posterior surface of larynx
laryngopharynx posterior border
posterior wall of pharynx
circular (constrictor) muscles action
constrict the wall of the pharynx while swallowing to push a bolus of food down toward the esophagus
circular (constrictor) muscles innervation
pharyngeal branch of CN X
what are the 3 circular (constrictor) muscles
superior pharyngeal constrictor m, middle pharyngeal constrictor m, + inferior pharyngeal constrictor m
what are the 2 parts of the inferior pharyngeal constrictor m
thyropharyngeus + cricopharyngeus
what are the 3 longitudinal muscles
stylopharyngeus, salpingopharyngeus, palatopharyngeus
longitudinal muscles action
elevate larynx + pharynx when swallowing + speaking
salpingopharyngeus m innervation
pharyngeal branch of CN X
palatopharyngeus m innervation
pharyngeal branch of CN X
stylopharyngeus m innervation
CN IX
Buccal stage of deglutition
Voluntary, mastication
Pharyngeal stage of deglutition
Involuntary, 3 phases
Phase 1 of pharyngeal stage of deglutition
Palatoglossus + palatopharyngeus squeeze bolus back into oropharynx. Elevator + tensor veil palatini + uvula elevate soft palate
Phase 2 of pharyngeal stage of deglutition
Stylopharyngeus, palatopharyngeus, + salpingopharyngeus elevate pharynx walls. Suprahyoids elevate hyoid bone + larynx
Phase 3 of pharyngeal stage of deglutition
Superior, middle, + inferior constrictors contract to move food
Esophageal stage of deglutition
Involuntary, pushes food into stomach
Extrinsic muscles of the tongue (4)
Genioglossus, hyoglossus, styloglossus, palatoglossus
Intrinsic muscles of the tongue (4)
Superior longitudinal, inferior longitudinal, verticalis, transversus
What does the superficial layer of deep cervical layer invest
SCM and trapezius
what does the superficial cervical fascia invest
platysma muscle
what does the superficial layer of the muscular layer of the pretracheal layer of the cervical fascia invest
sternohyoid m + omohyoid m
what does the deep layer of the muscular layer of the pretracheal layer of the cervical fascia invest
sternothyroid m + thyrohyoid m
what does the visceral layer of the pretracheal layer of the deep cervical fascia invest
thyroid gland, larynx, pharynx, trachea, esophagus
what does the buccopharyngeal fascia layer invest
buccinator + dorsal esophagus
what layers contribute to the carotid sheath
superficial layer, pretracheal, + prevertebral layers
what is the superficial layer of the deep cervical fascia also called? (the ____ layer)
the investing layer
what does the prevertevral fascia invest
vertebral column
what does the anterior part of the prevertebral fascia invest
prevertebral muscles
what does the posterior part of the prevertebral fascia invest
deep cervical muscles
contents of the carotid sheath
ICA, common carotid artery, jugular veins, vagus n
what layers make up the true retropharyngeal space
between the buccopharyngeal fascia + alar portion of the prevertebral layer of the deep cervical fascia
what layers make up the danger retropharyngeal space
between the alar + posterior portions of the prevertebral layer of the deep cervical fascia