Oral Histology 2 Quizzes/5 4 votes, 5 avg Intro Oral 2 1 / 5the main function of oral mucosa is : Protection Secretory Thermal regulation Sensory 2 / 5receptors in the oral mucosa initiate reflexes such as: touch water satisfaction taste sensation temperature 3 / 5The structure of the oral mucosa is: Epithelium, lamina propria and basement membrane. Epithelium and basement membrane. Mucosa & submucosa. Epithelium, lamina propria and muscular layer. 4 / 5Oral mucosa function specific to animals such as dogs : Sensory Thermal regulation Secretory Protection 5 / 5the oral mucosa Resembling GIT mucosa in : composed of Epithelium and connective tissue Coated by serous and mucous secretion Your score is 0% Restart quiz Send feedback By WordPress Quiz plugin/10 0 votes, 0 avg Keratinocytes 1 / 10Which type of keratin is devoid of nuclear remnants in the oral epithelium? Para-keratin Ortho-keratin Mixed keratin Non-keratinized 2 / 10Which of the following is a characteristic feature of keratinocytes? Microvilli Tonofilaments and Desmosomes Cilia Goblet cells 3 / 10Hemidesmosomes connect: Fibroblasts to collagen Keratinocytes to blood vessels Epithelial cells to each other Epithelial cells to the basement membrane 4 / 10Which of the following appears to play an important role in attachment of its cells: Lysosomes. Keratohyaline granules. Desmosomes. Glycogen contents. 5 / 10Which of the following are not usually found in the keratinocytes of the stratum spinosum of keratinized oral epithelium? Membrane coating granules. Keratohyaline granules Ribosomes. Tonofibrils. 6 / 10What type of epithelium lines the oral mucosa? Simple squamous epithelium Cuboidal epithelium Stratified squamous epithelium Transitional epithelium 7 / 10Keratohyaline granules in epithelial cells of keratinized mucosa are associated with: Prickle cell layer. The tonofilaments. Basal cell layer. Stratum granulosum. 8 / 10Which of the following cells synthesize protein which remains within the cell without secretion: Osteoblasts. Plasma cell. Fibroblast. Keratinocyte 9 / 10Which cell layer is responsible for mitotic division in keratinized oral epithelium? Basal cell layer Cornified layer Prickle cell layer Granular cell layer 10 / 10Which structure is referred to as “Odland’s bodies”? Hemidesmosomes Tonofilaments Keratinosomes Desmosomes Your score is 0% Restart quiz Send feedback By WordPress Quiz plugin/10 1 votes, 5 avg Non-Keratinocytes, Lamina Propria, Submucosa 1 / 10Which of the following statements about the submucosa is TRUE? It contains large arteries, veins, nerve trunks, and lymphatics It does not play a role in nutrition and defense It is composed of loosely arranged epithelial cells It is always present beneath the lamina propria 2 / 10Which component of the basement membrane is produced by connective tissue cells? Keratohyalin granules Lamina lucida Anchoring fibrils Lamina densa 3 / 10What is the primary function of the basement membrane in the oral epithelium? Preventing bacterial invasion Promoting differentiation and nerve regeneration Producing keratin Absorbing nutrients from the oral cavity 4 / 10Which of the following is NOT a type of non-keratinocyte found in the oral epithelium? Osteocytes Pigment cells Langerhans cells Merkel cells 5 / 10The basement membrane is stained black in silver preparation due to the presence of: Melanin granules Neutral mucopolysaccharides Tonofilaments Reticular fibers 6 / 10What is the primary function of Merkel cells in the oral epithelium? They produce melanin They play a role in antigen processing They produce keratin They are pressure-sensitive cells responding to touch 7 / 10What is the primary function of Langerhans cells in the oral epithelium? Production of keratin Antigen uptake and processing Synthesis of collagen fibers Pigmentation 8 / 10Which layer of the lamina propria is composed of delicate, loosely arranged collagen fibers and capillary loops? Reticular layer Submucosa Papillary layer Basal lamina 9 / 10What is the origin of melanocytes in the oral epithelium? Lymphoid tissue Mesenchymal cells Neural crest cells Bone marrow 10 / 10Which of the following is NOT a characteristic of clear cells in the oral epithelium? Their cytoplasm is free from tonofilaments They show a clear halo around the nuclei in H&E staining They do not play any role in keratohyalin granule synthesis They form sheet-like structures with cellular junctions Your score is 0% Restart quiz Send feedback By WordPress Quiz plugin/10 1 votes, 5 avg Musticatory Mucosa 1 / 10What type of epithelium lines the gingival sulcus? Orthokeratinized epithelium Keratinized stratified squamous epithelium Non-keratinized epithelium Parakeratinized epithelium 2 / 10Which of the following statements about the hard palate is true? It is covered by non-keratinized epithelium It has a mucogingival junction It contains the palatine rugae and median palatine raphe It has a thick layer of submucosa throughout 3 / 10Which of the following is a non-keratinized area of the oral mucosa? Palatine raphe Hard palate Gingiva Floor of the mouth 4 / 10Which part of the gingiva is freely movable and extends from the bottom of the gingival sulcus to the gingival margin? Attached gingiva Interdental papilla Free gingiva Gingival col 5 / 10Which structure is located in the interproximal spaces below the contact areas of teeth? Palatine raphe Mucogingival junction Interdental papilla Gingival sulcus 6 / 10What is the function of the palatine rugae? It supplies blood to the hard palate It helps in mastication and speech It provides sensory innervation to the gingiva It connects the soft and hard palate 7 / 10Which artery is the main blood supply to the gingiva? Facial artery Buccal artery Interdental artery Maxillary artery 8 / 10What is the function of the mucogingival junction? It connects the free and attached gingiva It holds the teeth in place It separates the gingiva from the alveolar mucosa It supplies blood to the gingiva 9 / 10Which type of mucosa is subjected to friction and pressure during mastication? Buccal mucosa Lining mucosa Specialized mucosa Masticatory mucosa 10 / 10What gives the attached gingiva its stippled appearance? High vascular supply Presence of melanin Functional adaptation to mechanical impact Accumulation of keratin Your score is 0% Restart quiz Send feedback By WordPress Quiz plugin/10 1 votes, 5 avg Lining Mucosa 1 / 10What is the main characteristic of alveolar mucosa? No submucosa Well-defined loose connective tissue Thick keratinized epithelium Presence of sebaceous glands 2 / 10The nasal side of the soft palate is covered by which type of epithelium? Keratinized stratified squamous epithelium Transitional epithelium Non-keratinized stratified squamous epithelium Pseudostratified columnar ciliated epithelium with goblet cells 3 / 10The sebaceous glands in the skin side of the lips secrete by which mechanism? Endocrine secretion Apocrine secretion Merocrine secretion Holocrine secretion 4 / 10What prevents the mucosa of the cheeks from being bitten during mastication? Thick keratinized epithelium Presence of salivary glands Firm attachment of mucosa to the buccinator muscle Elastic fibers in the submucosa 5 / 10What is the function of the stratum lucidum in the skin side of the lips? Promotes salivary secretion Provides pigmentation Blocks penetration of substances Enhances sensory function 6 / 10Which type of epithelium is found in the lining mucosa? Transitional epithelium Keratinized stratified squamous epithelium Pseudostratified columnar epithelium Non-keratinized stratified squamous epithelium 7 / 10Which of the following structures provides vascular supply to the hair follicle in the dermis? Epidermis Sweat gland Hair papilla Sebaceous gland 8 / 10Which structure marks the depth of the oral vestibule where the mucosa of lips and cheeks reflects on the alveolar mucosa? Interdental papilla Mucogingival junction Gingival sulcus Vestibular fornix 9 / 10The vermillion border of the lips is characterized by which of the following? Thick stratified squamous epithelium Presence of sebaceous glands Non-keratinized epithelium with mucous glands Thin keratinized epithelium allowing red color to show 10 / 10What is the function of elastic fibers in the lining mucosa? To maintain a smooth surface during muscle movement To promote keratinization To enhance blood supply To provide rigidity Your score is 0% Restart quiz Send feedback By WordPress Quiz plugin
