Alveolar bone-1

	Question	Number
1	At the beginning of 2nd month of fetal life skull is made up of all	Chondrocranium; Desmocranium; Visceral part of skull
2	Desmocranium is	Memebranous. The cartilaginous parts are the chondrocranium and the visceral parts of skull.
3	Desmocranium includes	Wall and roof of brain case
4	All the bones of upper face develop by	Intramembranous ossification. The bones of base of skull develop by endochondral ossification and cranial vault by sutural apposition.
5	The mandible develops by	Intramembranous ossification
6	The cartilage of the first arch	Meckel’s cartilage
7	The highest remodeling rate in jaw bone is seen with	Alveolar bone. As this bone is attached to the constantly remodeling periodontal ligament fibers, they under go constant remodeling to accommodate.
8	The proximal part of Meckel’s cartilage is the primodium for the	Incus & Malleus. Larynx develops from 3rd and 4th pharyngeal arch. Stapes develops from the 3rd arch.
9	Bones of the base of the skull develops by	endochondral ossification
10	Bones of the upper face develops by intramembraneous ossification close to the	Meckel’s cartilage
11	The mandible makes its appearance as a bilateral structure in which week of fetal life	6th week
12	Throughout fetal life the mandible is a/an	Paired bone
13	The 2 halves of the mandible unite by ossification of the symphyseal fibrocartilage at	1st  year
14	The symphysial cartilage is derived from	Connective tissue of midline
15	Mental ossicles are bone found	In the symphysial cartilage
16	The development of the alveolar process begins at	2nd month of fetal life
17	The bone at the alveolar crest that has characteristics of cartilage and bone is referred as	Chondroid bone
18	Alveolar bone proper is	The thin lamellae of bone that surrounds the root of the tooth & give attachment to the periodontal ligament fibers.
19	The supporting alveolar bone is inclusive of	Cortical plates; Compact bone; Spongy bone. Does not include Bundle bone
20	The cortical plate is thickest in the	Buccal side of the posterior mandible
21	Spongy bone is not found in	In the region of the anterior teeth of both jaws
22	The spongiosa of the alveolar process with a ladder like configuration is present in	Mandible
23	The spongiosa of the alveolar process is irregularly arranged is in	Maxilla
24	The inderdental and interradicular septa contains the nutrient canals called as	Zuckerkandl and Hirschfeld canal
25	In mandible the hematopoietic marrow is not found in	Coronoid process
26	The alveolar bone proper is perforated by branches of intralveolar nerves and blood vessels and hence is also called the	Cribriform plate
27	The periodontal ligaments are anchored to the	Bundle bone
28	The type of bone that contains more calcium salts per unit area is	Bundle bone
29	Inorganic content of bone is approximately	65%
30	In bone the type of collagen is primarily	Type I
31	Howship’s lacunae are bay like depressions in the bone that contain	Osteoclast
32	The first formed alveolar bone lies near to the	Crypt wall
33	The bundle bone is named so because it	It provides attachment to bundles of fibers of periodontal ligament
34	Lamina dura has	Increased radiopacity
35	The increased radiopacity of lamina dura is due to the fact	Absence of trabeculation. It is a very thin plate of thick bone with absence of trabeculation.
36	The Sharpey’s fiber that is located within old bone and terminates with reversal line is	Severed fibers
37	The Sharpey’s fiber that is located within the new bone and terminating at reversal line is the	Adhesive fibers
38	The Sharpey’s fibers that are entirely in the new bone is the	Arborized fibers
39	The non-striated Sharpey’s fibers cross the reversal line is	Continuous fibers. Continuous fibrils connect the old and new fibrils and to accomplish this they cross the reversal lines.
40	Osteon is	A cylinder of bone that forms the functional unit of bone
41	In the centre of each osteon is the	Haversian canal
42	Two adjacent Haversian canals are interconnected by	Volkmann canal
43	In addition to collagen of type I, osteoblasts also secrete collagen of	Type V
44	The bone that has more osteocytes is the	Woven bone. It is reported that the woven bone and repairing bone have large number of osteocytes as compared to others.
45	Osteoblasts produce their hydrolytic enzymes under the influence of	Interleukin 6
46	Chondroblasts on reaching maximum size elaborates	Type X collagen
47	Alveolar process attains its maximum size with	On one half root formation. The tooth starts to erupt once it is half formed and with the teeth reaching its functional position, the alveolar process attains its maximum size.
48	The part of the jaw that forms and supports the sockets of the teeth is the	Alveolar process
49	The bone that surrounds alveolar bone proper and gives support to the socket is the	Supporting alveolar bone
50	The outer and inner plates of alveolar process are formed by the	Alveolar bone proper
51	The area between the cortical plates and alveolar bone proper is filled by the	Spongy bone
52	In alveolus, defects of the outer alveolar walls are common in	Posterior maxilla
53	Usually the marrow space in the alveolar process contains	Fatty marrow
54	In adulthood the bone turnover rate of cortical bone is	5% per year. 15% per year bone turnover rate is observed with trabeculae.
55	The fibrous attachment between tooth and bone is called as	Gomphosis
56	The matrix of the bone that is devoid of minerals is referred as	Osteoid tissue
57	The pink layer of tissue in hematoxylin and eosin section surrounding the normal basophilic bone is the	Osteoid tissue
58	The scalloped outline near Howship lacunae that turn their convexity towards the old bone is	Reversal line. Resting lines are often linear and not scalloped.
59	After removal or loss of tooth, the alveolar bone	Undergoes atrophy
60	The embryonic bone that is formed during healing in extraction socket is the	Immature bone
61	The spongy bone in association with a function less teeth show radiographically	Pronounced rarefaction of trabeculae. They contain less bone trabeculae and are thin.
62	Alveolar bone proper in association with functionless teeth is	Remain normal. They maintain their thickness as they continue to receive some or other stimuli from the tension in periodontal ligament fibers.
63	Bulk of the compact bone is made up of	Concentric lamellae. Circumferential lamellae enclose or line the outer surface of adult bone while interstitial lamella is seen between the circumferential and concentric lamellae.