TCDHA Histology SEM I FINAL EXAM Questions With Correct Answers

Which duct does not branch? - Answer simple A process by which all cytoplasmic components of the cell are divided into 2 identical daughter cells - Answer cytokinesis Name the 2 types of nerves in the periodontal ligaments? - Answer myelinated afferent and autonomic Name the 3 groups of fibers in the PDL - Answer gingival fiber group, alveolodental ligament, transseptal ligament These are concentric series of bands represent incremental growth lines that extends from the DEJ - Answer lines of retzius Which type of junctions bind cells together by creating spot welds between adjacent membranes? - Answer desmosomes Which embryonic layer produces the alveolar process? - Answer mesoderm Which component of blood functions in clotting? - Answer platelets This is the 1st to arrive to the site of injury acute inflammation - Answer neutrophil (PMNs) An allergic response that contains heparin and histamine? - Answer mast cells These cells are involved with chronic inflammation - Answer monocytes/phagocytes The oral cavity has a turn over time of 27 days? True or false? - Answer false - 14 days The alveolodental ligament fiber group includes all fibers except? - Answer dentinogingival The primitive mouth starts to from at? - Answer 4 weeks Alveoloar mucosa in non-keratinized. True or false? - Answer true Lining epithelia is keratinized true or false? - Answer false - non- keratinized Masticatory epithelia is non keratinized. True or false? - Answer false - keratinized Lingual papillae is consider which type of epithelia? - Answer specialized What are the 3 main types of oral epithelia? - Answer lining, masticatory, specialized Which glad secrets small amounts of cytoplasm/cell with secretory product? - Answer apocrine - p for pinched off This gland involves no loss of cytoplasm/ cell ei) exocytosis - Answer merocrine This gland involves whole cells being discharged/ cell ruptures? - Answer holocrine - hol for whole Neutrophils are? - Answer 1st to arrive to the site of injury and are involved in acute, inflammatory response This involves B cells and T cells - Answer lymphocytes This is involved in later stages of inflammation - Answer monocytes This is involved in allergic reactions (3) - Answer mast cells, eosinophils, basophils In what stage of mitosis does the nuclear membrane disappear? - Answer prophase Cementum formation? A) occurs during the first 4 weeks in utero B) is on going throughout life C) stops at 2 years old D) begins at 2 years old - Answer is on going throughout life What structures make up the hard palate? - Answer globular process, right and left palatine process Another word for the globular process is? - Answer intermaxillary segment What is the left and right palatine process? - Answer palatal shelf What lines can be seen with the naked eye on the cervical 2/3rd of the crown? - Answer perikymata - external representation of the lines of retzius This is a change in the direction of rods from on prims to the next - Answer hunter Schreger bands These are small dark brushes of enamel that represent less mineralization - Answer enamel tufts These are trapped odontoblastic processes - Answer enamel spindles Golgi apparatus is? A) the second largest organelle B) sorts - condenses - packages/delivers proteins from the RER C) releases contents by exocytosis D) all of the above - Answer all of the above The basement membrane is located between the epithelium and connective tissue. The 2 layers that make up the basal lamina are lamina lucida and reticular lamina. A) both statements are true B) first statement is false - second is true C) both statements are false D) first statement is true - second is false - Answer D) first statement is true - second statement is false 3 layers that make up the basement membrane - Answer 1) lamina lucida (clear layer) 2) lamina densa (dense layer) 3) reticular lamina (contain collagen and reticular fibers) This layer of the basement membrane contains collagen and reticular fibers - Answer reticular lamina These 2 layers together form the basal lamina - Answer lamina lucida, lamina densa Meckel's cartilage is important in the formation of the maxilla? True or false? - Answer false - mandible ______ develop on inner surface of enamel organ (IEE) - Answer ameloblasts Osteon is? A) unit of structure in compact bone B) contains haversian canals C) composed of lamellae D) all of the above - Answer D) all of the above The area of bone loss where an apical root penetrates the cortical bone is called? - Answer fenestration The fibrous matrix of cementum. A) consists of only sharpeys fibers B) consists only of intrinsic non-periodontal fibers C) is found in the enamel D) both A and B - Answer D) both A and B Reticular fibers are composed of? - Answer reticulin - very thin fibers Sometimes odontoblastic processes pass across the DEJ into the enamel and become trapped. When this happens it is known as? - Answer enamel spindles Endoplasmic reticulum is? A) production of DNA/RNA B) synthesizes protein and lipid molecules C) power house of the cell D) modifies - stores - segregates and transports protein E) both B and D - Answer E) both B and D The power house of cell is known as? - Answer mitochondria The production of DNA and RNA is in the? - Answer nucleus Pinocytosis is cell eating. True or False? - Answer false - cell drinking What type of secretion is clear watery with protein? - Answer serous Where is simple cuboidal epithelium located? A) composed of a single layer of cube-like cells B) contributes to secretion C) found in the ducts of salivary glands D) all of the above - also found in the acini - Answer D) all of the above - also found in the acini Nucleus is? A) largest - densest organelle B) contains enzymes C) packages proteins D) destroyed worn cell parts - Answer largest densest organelle Where is cellular (secondary) cementum the thickest? - Answer apex of the root Lamina dura is defined as? - Answer alveolar bone proper - lines the tooth socket Root formation begins before the crown is completely formed. HERS consists of only IEE and OEE. A) first statement is true - second false - Answer B) first statement is false - second true C) both are true D) both are false, B) first statement is false - second is true The primary dentition is initiated at? - Answer 6 weeks Successional permanent teeth form in which week? - Answer 10 week Loose connective tissue. A) forms thin membranes between organs and binds them together B) serves as protective padding for the deeper structures of the body C) all of the above D) none of the above - Answer C) all of the above