Exam #2 2018

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the face begins to develop during the late part of the ___________ week of embryonic development or near in uterine day 28.
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Terms in this set (34)
Within the pharyngeal arches _____________ will produce the bones of the facial skeleton.ectoderm properThe _____________ groove separates the maxillary process from the lateral nasal process.nasolacrimalThe philtrum is produced by the ____________ of the ___________.fusion; medial nasal processMost of the pharyngeal pouches are lined with endoderm and produce all of the following except the ___________. a. tonsils b. thymus c. tympanic membrane d. hyoid boneHyoid boneThe oropharyngeal membrane is the _____________. a. same as the stomodeum b. future boundary between the oral cavity and the pharynx or foregut c. created by double layer of ectoderm and endoderm but not mesoderm d. both b and c e. both a and cd. both b and cTrue or false. Folding must occur before the stomodeum will be present during the late fourth week and early fifth week of embryonic development.TrueTrue or false. If the palatal shelves do not merge via migration of ectomesenchyme a gap in the midline of the hard palate will be produced.TrueTrue or false. The ectodermally lined gut tube is formed by lateral folding.FalseTrue or false. The ultimobranchial bodies, also known as tonsillar lymph nodes, are first generated by the fourth pharyngeal pouch.False.True or false. The anterior tongue body produced by the third pharyngeal arch.FalseTrue or false. The hypobranchial or hypopharyngeal eminence is associated with the 3rd and 4th arches.trueTrue or False. The lingual papillae that contain taste buds are called the fungiform, foliate, and the circumvallate papillae.trueTrue or false. Tongue muscle is derived from the pharyngeal arches.FalseTrue or false. Tongue mucosa contains glands.TrueAnkyloglossia is defined as an alteration in the _____________________.lingual frenumIncomplete growth of the neck region may produce a ____________, which is due to the remnants of _____________ and ___________________ and ____________ pharyngeal grooves.neck cleft; the 3rd and 4th and 6thThe ectomesenchyme that will produce the cartilage and connective tissue of the temporomandibular joint is found in...arch 4 and 6The embryologic development of the upper lip begins at about 6 to 7 weeks of gestation, when the medial nasal prominences merge with each other and with a contribution from the _____________. These structures collectively are called the _____________ segment that ultimately gives rise to the philtrum of the upper lip, the middle portion of the upper jaw and its associated gingiva, and the primary palate.Frontonasal process; intermaxillary segmentCleft lip and cleft anterior palate involves the....... a. only the development of the true maxilla b. only the development of the intermaxillary segment c. only the development of the medial nasal process d. all of the above could be included with cleft lips and cleft palatesd. all of the above could be included with cleft lips and cleft palatesThe region of oral mucosa that exhibits a very convoluted junction between the epithelium and the underlying connective tissue is the....masticatory mucosaParakeratinized epithelium is found in the following locations... a. soft palate only b. floor of the oral cavity (under the tongue) only c. ventral surface of the tongue only d. the length of the alveolar process of the mandibled. the length of the alveolar process of the mandibleThe sulcular epithelium that exists in the sulcus next to the enamel of a tooth is characterized by.....non-keratinized epitheliumTaste buds are composed of _________ cell types.fourWhere do you find junctional epithelium in the oral mucosa and how many cell layers does it contain in general?at the sulcus, 2 cell layers