Perusal Lab Exam #1 Flashcards
What is the name of the tissue section derived from the developmental precursors known as the hybobranchial eminence/epiglottic swellings?
Pharyngeal arch?
Nerve?
Germ layer for the cartilage?
Epiglottis
Developmental precursor from PA 4
Key features: laryngeal side: SSNK; Oral side: PSCC; elastic cartilage
Mucosa is innervated by Vagus Nerve
Germ layer for the cartilage in PA 4 is lateral plate
Epiglottis
What is the region on containing specialized mucosa and identify the structures that are unique to only the specialized mucosa?
Specialized mucosa is located on the dorsal anterior 2/3 of tongue
SSK and lingual papillae is unique to specialized mucosa
Anatomical region where tissue section was taken: Oral region
Germ layer for epithelium; ecotderm
What is the type of papillae that lacks tastebuds? What is the anatomical region from which the tissue was taken? What is the name of the branch of the cranial nerve that innervates this papillae?
Filiform papilla; scattered among fungiform papillae on dorm of tongue. It’s innervated by branch of trigeminal V3
What is the name of the region that has laryngeal mucosa that is derived from the bhypbranchial eminence of 4th PA?
Epiglottis: Stratified squamous non-keratinized and lamina propria
Cranial Nerve = Vagus
What region is derived from the 6th PA and receives motor and sensory innervation by the same branch of the vagus nerve.
Area including the true vocal fold and subglottic region is from PA6: Mucosa receive sensory information and motor innervation to all of the muscle below the mucosa from a branch of the Vagus.
What structure contains taste buds which transmits SVA innervation by a branch of the glossopharyngeal nerve?
Circumvallate papilla
What structure transmits SVA input by the chords tympani?
Both the fungiform (dorsal surface to ant. 2/3) and foliate papilla (posterior-lateral surface of ant. 2/3
What is the name of the structure that permits entry of taste molecules into the taste bud?
Taste pore: three areas in the oropharyngeal region that may contain taste buds are the epiglottis, larynx, and soft palate (also taste buds on the posterior 1/3 in the back)
What is the region of lining mucosa that is endoderm derived from the region of the 1st PA? What the of sensory nerve supply is provided?
Ventral surface of anterior 2/3 of tongue demonstrates lining mucosa that is endoderm derived from PA1. Lining mucosa is also found on the dorsal surface of the posterior 1/3 of tongue. Sensory innervation to lining mucosa is GSA
What is the region of lining mucosa which originates from the hypobranchial eminence of the 3rd PA
The endodermal mucosa of the posterior 1/3 of the tongue originates from the hypobranchial eminence of the 3rd PA. It is epithelium and underlying CT
What is the name of the malt tissue that is associated with SSNK epithelium derived from endoderm that envelopes from the hypobranchial eminence of the 3rd PA?
The MALT tissue associated with SSNK epithelium derived from endoderm that develops from the hypobranchial eminence of the 3rd PA can be demonstrated by the lingual tonsils
