Anatomy Flashcards
Branches of ECA
Superior thyroid Ascending pharyngeal Lingual Facial Occipital Posterior auricular Maxillary Superficial temporal
Infrahyoid muscles and innervation
Thyrohyoid
Omohyoid
Sternothyroid
Sternohyoid
All innervates by ansa cervicalis except
Thyrohyoid by anterior ramus of C1 via hypoglossal
Blood supply of scalp (A to P)
Supratrochlear Supraorbital Zygomaticotemporal Superficial temporal Posterior auricular Occipital
Nerve supply of scalp (A to P)
Supratrochlear Supraorbital Zygomaticotemporal Auriculotemporal Lesser occipital Greater occipital
Face venous drainage
Supraorbital + supratrochlear = facial
Maxillary + superficial temporal = retromandibular
Retromandibular + posterior auricular = EJV
Internal carotid artery segment
Cervical Petrous Lacerum Cavernous Clinoid Ophthalmic Communicating
Subclavian boundaries
Anterior scalene covers 2nd
Lateral to 1st rib = axillary
Branches of subclavian artery
1st
- Vertebral artery
- Thyrocervical trunk
- inferior thyroid
- superficial cervical
- suprascapular - Internal thoracic
2nd
- Deep cervical
- Superior intercostal
3rd
Usually none
Nasal septum
Ethmoid
Vomer
Septal cartilage
Nasal cavity roof (A to P)
Nasal
Frontal
Ethmoid cribiform
Sphenoid
Nasal cavity floor
Maxilla palatine process
Palatine horizontal plate
Arythenoid relations
A- vocal ligament
L- muscular process- posterior and lateral cricoarythenoid muscles
S- corniculate- gives rise to aryepiglottic fold
I- cricoid
Sphenoethmoidal recess
- location
- Drains
Posterosuperior to superior choncae
Drains sphenoid sinus
Superior nasal meatus drains
Posterior ethmoidal sinus
Nasal infundibulum drains
Frontal sinus
Hiatus semilunaris drains
Maxillary sinus
Middle nasal meatus drains
Middle and anterior ethmoidal sinus
Inferior nasal sinus drains
Nasolacrimal duct
Nasal cavity blood supply
ECA:
Ophthalmic-> Sphenopalatine
Facial
ICA:
Greater and lesser palatine
Sensory and motor supply of larynx
Sensory:
Above vocal fold- internal branch of superior laryngeal nerve
Below vocal fold- recurrent laryngeal nerve
Motor:
All intrinsic muscles- recurrent laryngeal nerve
Cricothyroid- external branch of superior laryngeal nerve
Vocal fold vs vestibular fold
Vestibular:
Superior
Vascular
Fixed
Vocal:
Inferior
Avascular
Mobile
Larynx intrinsic muscles
2 modify inlet
Narrows- oblique arythenoid
Widens- thyroepiglotic
5 moves vocal folds Adduction- lateral cricoarythenoid Abduction- posterior cricoarythenoid Tense- cricothyroid Relax- thyroarythenoid Approximate- transverse arythenoid
Autonomic inputs of parasympathetic ganglions
Ciliary- 3rd (inferior division)
Otic- 9th
Pterygopalatine- 7th (greater petrosal)
Submandibular- 7th (chorda tympani)
Ligaments of mandible
Lateral:
Lateral temperomandibular ligament
Medial:
Sphenomandibular ligament
Stylomandibular ligament
