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Emby and Hist. FINAL
FINAL
| Question | Answer |
|---|---|
| What is the chief function of ribosomes? | protein production |
| What is the role performed by the the Golgi body? | produces lysosomes |
| What is the chief role of the mitochondria? | Power plant of the cell, converts energy |
| What controls chemical reactions and stores genetic information of the cell? | nucleus |
| Where is stomodeum first located? | between the first brachial arch and the buccal pharangeal membrane |
| The connective tissue cell that has the capability of producing reparative dentin in a formed tooth is called the | Odontoblasts |
| What is the shape of the enamel rods? | key holes |
| What is the crystalline formation of enamel? | calcium hydroxyapatite |
| What is Nesmuths membrane? | residual emeloblasts |
| Describe fordyce granules: | sebacious glands in the mouth |
| What is the structure that attaches the epithelium to the connective tissue in the oral cavity? | basement membrane |
| What is the dividing line between the attached gingiva and the alveolar mucosa called? | mucogingival line |
| The forehead arises from the? | frontal nasal process |
| The tounge arises from the? | first brachial arch |
| How many tooth buds are evident at 12 weeks? | 20 |
| What forms dentin? | Dontoblasts |
| What is the purpose of Hertwig's sheath? | forms the root |
| What fuses with the oral epithelium to create a tissue that degenerates, leaving an epithelial lined eruption tunnel that will produce some inflammation during eruption and assists with the permanent tooth eruption? | REE |
| In a fully erupted tooth, what tissue does not have the capability of repair? | enamel |
| Which areas of the mouth consist of the thinnest and MOST permealbe stratified squamous epithelium? | floor of the mouth |
| What does mesoderm give rise to? | connective tissue/gastrointestinal system, skeletal system |
| What tissues are considered avascular? | cementum, dentin, enamel |
| The PDL is classified as: | connective tissue |
| What is bone that is arranged in concentric lamellae around a canal called? | compact bone/haversion system |
| Facial development begins in what week? | third |
| The primitive mouth is called? | stomadeum |
| A cleft lip occurs when the maxillary process fails to fuse with what other process? | lateral |
| The earliest signs of the development of the human face occurs with the formation of: | stomadeum |
| What anatomic feature seperates the root and the body of the tounge? | Circumvalle papilla |
| The primary palate consists of what structures? | central and lateral incisors |
| It cannot be determined whether cleft palate will be present or not until what week? | twelve |
| The maxillary process develops from? | the mandibular arch |
| The mandibular arch develops from? | first brachial arch |
| When considering the tooth development stages, the stage in which the shape of the tooth becomes evident and the dental papilla is contained within the enamel is called? | appositional stage |
| The tissue that acts as a guide to the development of the root is called? | Hertwig's sheath |
| Which of the following deposits the enamel matrix? | Tome's process |
| What percent of the time does the cementum overlay the enamel? | 60% |
| Rank tissues from most to least abrasion resistant? | enamel, dentin, cementum |
| Which happens when the pulp ages? | Vascular sensitivity decreases, pulp chamber size decreases, sensitivity decreases, mineralization decreases |
| At which location does the cementum have the greatest thickness? | apex and furcations |
| Which cells are most active on the mesial side of a tooth being translated mesially during orthodontic treatment? | osteoclast (CLAST) |
| What increases in response to an increase in occlusal activity? | trabaecular formation |
| What is true of sclerotic dentin? | Caries are slower, found in older teeth, calcium salts, odontoblasts degenerating |
| Where is an enamel pearl most often seen? | CEJ junction on CEMENTUM |
| Nutrition of the tooth originates from which of the structures of the tooth? | pulp |
| What is the means of attachment for the PDL on both the cementum and the lamina dura? | Sharpey's fibers |
| What are some characteristics of caries? | bacteria smaller than diameter of tubules, bacteria follows tubules, horizontal spread is more rapid in dentin than enamel, sclerotic dentin slows down |
| What are reliable signs of gingival health? | stippling, color, bleeding, swelling |
| Why is vasodilation important in the inflammation response? | allows antibodies to come in, allows PMN |
| Name special proteins also known as immunoglobulins that neutralize or target the enemy during the inflammation process? | antibodies |
| What cell initiates the repair phase of the inflammation process and attempt to debride the site? | macrophage |
| With what is the red color found in inflammation associated? | vascular hyperemia-increased blood supply |
| All of the following are true of dentigerous cysts: | asymptomatic, common, should be evaluated, can form around crowns of unerupted teeth |
| What is the category of the B cells and T cells? | lymphocytes |
| Name some components of the inflammation process: | Neutrophils are also called PMN, Phagocytes are scavengers, monocytes become macrophages, blood vessels become more permeable |
| What are reliable signs of inflammation? | swelling, redness, bleeding, heat |
| What are some characteristics of the attached gingiva? | gingiva at junctional epithelium of gingival margin |
| What are some characteristics of the Col? | non-keratinized, varies in size and width, associated with posterior teeth, if no contact the attached gingiva goes from facial to lingual |
| What are some characteristics of the lamina propria? | connective tissue, inmobile |
| List some clinical signs of active periodontal disease: | gingival recession, necrosis, edema,hyperplasia |
| What are some characteristics of gingival fluid? | contains antibodies, slow flow rate, contains PMN's |
| Complete renewal of the junctional epithelium cells takes place? | in 7 days |
| What are some characteristics of the sulcus? | JE is 3-4 cells thick, no reedy pegs, tightly packed |
| What are some characteristics regarding enamel? | incisal/occlusal portion fomed first, crystal formation is calcium hydroxyapatite, emelogenesis, contains para karmota |
| The imbrication lines of Von Ebner in dentin are incremental lines or bands that stain darkly. Von Ebner lines can be likened to growth rings or incremental lines of Retzius in enamel. | Both TRUE |
| Which part of the tooth contains the odontoblastic zone, and the cell rich zone? | pulp |
| Where do the transseptal fibers attach? | from tooth to tooth |
| Which of the salivary glands provides the largest volume of saliva? | submandibular |
| What is the name of the submandibular salivary gland duct? | Wharton's duct |
| The epiblast and hypoblast form what structure? | Bylamina disc |
| What and where are sharpey's fibers? | attach PDL to the bone |
| What dental structure does not transmit pain sensation? | enamel |
| What are some characteristics of the PDL? | Osteoblasts, osteocytes, osteoclasts, cementoblasts |
| Name the stages in the development of the tooth germ? | initiation, apposition, maturation |
| What is the result of the deposition of calcium salts into dentinal tubules? | sclerotic dentin |
| What are epithelial cells found in the PDL of a functioning tooth called? | rest of malaisis |