Anatomy Flashcards
What are the 7 bones of the orbit?
Frontal Lacrimal Maxilla Ethmoid Sphenoid Palatine Zygomatic
What bones comprise the inferior border of the orbit?
Maxilla
Zygomatic
What bones comprise the superior border of the orbit?
Frontal
What bones comprise the lateral border of the orbit?
Frontal
Zygomatic
What bones comprise the medial border of the orbit?
Lacrimal
Ethmoid
Palatine
Frontal
What bones comprise the posterior border of the orbit?
Sphenoid
Zygomatic
Frontal?
What structures does the orbit communicate with?
Middle cranial fossa (via optic canal and SOF)
Infratemporal and pterygopalatine fossa (via IOF)
Inferior meatus of the nose (via the nasolacrimal canal)
Nasal cavity (via the anterior ethmoidal foramen)
Face (via SOF & IOF)
Superior stratum of retrodiscal pad
(Retrodiscal pad/bilaminar areas of TMJ)
Contains many elastic fibers that pull the articular disk backwards to its resting position
Inferior stratum of retrodiscal pad
(Retrodiscal pad/bilaminar areas of TMJ)
Composed of highly vascularized tissue (pseudo-cavernous plexus) that is filled with blood whenever articular disk moves forward in function
What structures of the tongue does pharyngeal arch I form?
Tuberculum impar
Lateral lingual swellings which develop sides of median tongue bud and fuse to form anterior 2/3s of the tongue
What structures of the tongue does pharyngeal arch II form?
Part of the copula –> forms posterior 1/3 of the tongue
What structures of the tongue does pharyngeal arch III form?
Part of the copula and hypobrancial eminence –> forms posterior 1/3 of the tongue
T/F: The anterior 1/3 of the tongue is formed from ectoderm, while the posterior 2/3 of the tongue is formed from endoderm.
True
Which lingual papillae primarily function in special taste and sensation?
Circumvallate and foliate
What type of lingual papillae are on the anterior 1/3 of the tongue?
(Masticatory)
Filiform
Anterior fungiform
What type of lingual papillae are on the posterior 2/3 of the tongue?
(Taste)
Circumvallate
Foliate
Posterior fungiform`
Filiform papillae
Hair-like, somewhat keratinized
Fungiform papillae
Only papillae with taste buds on dorsal surface of papilla (on the top, rather than the sides)
Circumvallate papillae
Taste buds only on one(?) lateral surface
von Ebner glands in crevice to flush out buds with serous secretions
Foliate papillae
Taste buds on both lateral surfaces
von Ebner glands in crevice to flush out buds with serous secretions
What indicates a submucosal cleft palate?
A palpable notch at the posterior end of the palate or bifid uvula (partial separation of muscle within intact mucosa)
Cleft lip
Improper fusion of medial nasal and maxillary processes
