Final Exam Flashcards
What nerve innervates platysma?
Cervical branch of the facial
What does the sphenoid sinus drain into?
Sphenoethmoid recess
What does the posterior ethmoid sinus drain into?
Superior meatus
What does the frontal, maxillary, anterior and middle ethmoid sinus drain into?
Middle meatus
What 3 veins does the nasal drain into? SFO
Sphenopalatine
Facial
Ophthalmic
What nerve supplies the anteriosuperior region of the nose?
V1 = anterior ethmoidal nerve
What nerve supplies the posterior 2/3 of the nose?
V2 = nasopalatine and greater palatine nerve
What skeletal bones does the neural crest make up? (8)
Facial bones
- Mandible
- Frontal
- Zygomatic
- Anterior Sphenoid & frontal
- Nasal
- Maxilla
- Incisive
- Sometimes coronal and Sagittal sutures
What muscles come from PA1?
- Mastication (masseter & temporalis)
- Mylohyoid
- Anterior digastric
- Tensor tympanic
- Tensor veli palatini
What muscles come from PA2?
- Facial expression
- Stapedius
- Stylohyoid
- Posterior digastric
What muscles come from PA3?
Stylopharyngeus
What muscles come from PA4?
- Cricothyroid
- Levator veli palatini
- Pharynx constrictors
- Intrinsic larynx
What skeletal components come from PA2?
- Stapes
- Styloid process
- Upper body of hyoid
What skeletal components come from PA3?
- Lower body of hyoid
What skeletal components of come from PA4?
(Cartilages of thyroid)
- Thyroid
- Cricoid
- Arytenoid
- Corniculate
- Cuneiform
What cortex layer does the Broca’s area stay in?
Frontal cortex
Motor speech area
What cortex layer contains the Wernicke’s area? (2)
Parietal and temporal
What areas and association areas are located within frontal lobe?
Broca’s area
Primary motor area
Pre motor area
What areas and association areas are located within parietal lobe?
Wernicke’s area
Primary somatosensory association area
What areas and association areas are located within temporal lobe?
Wernicke’s area
Auditory association area
Olfactory
Auditory and Olfactory association area
What areas and association areas are located within occipital lobe?
Primary visual
Visual association
What are the 3 unpaired cartilages of the larynx?
ACC
- Arytenoid
- Cuneiform
- Corniculate
What are the 3 paired cartilages of the larynx?
- Epiglottic
- Cricoid
- Thyroid
What part of the larynx forms sound?
Vocal folds
What part of the larynx protects the vocal folds?
Vestibular folds
What innervates the prevertebral muscles?
Ventral rami
What is the arterial supply to the nasal area? Which are the max contributors?
Max = maxillary and ophthalmic
Maxillary - sphenopalatine, anterior and posterior ethmoid, greater palatine
Ophthalmic - anterior and posterior ethmoid
Facial - superior labial and lateral nasal
Where do the thyroid arteries arise from? IMA; Superior; Inferior
IMA = brachiocephalic
Superior = external carotid
Inferior = subclavian
Intrinsic vs. Extrinsic muscles
Intrinsic - curl, squeeze, and fold the tongue
Extrinsic - speech and food manipulation
Function of genioglossus, styloglossus, hyoglossus, palatoglossus
- Genioglossus - protract tongue
- Styloglossus - elevate and retract
- Hyoglossus - depress and retract
- Palatoglossus - elevate posterior part
What is within the pre tracheal layer of the fascia like layers? (3)
- Trachea
- Thyroid gland
- Esophagus
What are the contents of the prevertebral layer of the neck fascia?
- Longus colli
- Anterior scalene
- Vertebral arch
- Nuchal ligament
- Middle scalene
What area the components of the carotid sheath of the neck fascia?
- Common carotid artery
- Internal jugular
- Vagus nerve
What area the components within the investing layer of the neck fascia?
- Trapezius
2. SCM
What does the nasolacrimal duct drain into?
Inferior meatus
What are the three suprahyoid muscles?
- Geniohyoid
- Mylohyoid
- Digastrics
Function & innervation of geniohyoid
Shortens mouth floor
C1 via hypoglossal
Function and innervation of Digastrics
Depress mandible and steady hyoid
Anterior = Mandibular
Posterior = facial
Function and innervation of mylohyoid
Elevates hyoid and tongue
Nerve to mylohyoid from inferior alveolar via trigeminal
What are the infrahyoid muscles?
- Sternohyoid and Omohyoid
- Sternothyroid
- Thyrohyoid
Functions and innervation of sternohyoid and Omohyoid
Ansa Cervicalis
Depress and steady hyoid
Functions and innervation of sternothyroid
Ansa Cervicalis
Depress hyoid and larynx
Function and innervation of Thyrohyoid
C1 of Hypoglossal
Depress hyoid and elevate larynx
Which larynx muscle abducts the vocal ligament?
Posterior crico-arytenoid
Function of lateral crico-arytenoid?
ADDucts vocal folds (fine tuning)
Function of transverse and oblique arytenoids?
ADDucts arytenoid cartilages
Function of vocalis?
Relaxes posterior vocal ligament while maintaining tension in anterior part
Function of crico-arytenoid?
Stretch and tense the vocal ligament
Function of the thyro-arytenoid?
Relaxes vocal ligament