Question: Which of the following enzymes are involved in bone formation________________?

• 1. Alkaline phosphatase and urease
• 2. Catalase and phosphorylase
• 3. Alkaline phosphatase and phosphorylase
• 4. Acid phosphatase and catalase

Question: When osteoblast lay new bone from outside to inside in a osteon, the active formation area is called________________?

• 1. Haversion cone
• 2. Filling cone
• 3. Cutting cone
• 4. Howships cone

Question: The intimal B cells of synovical memrbane of temporomandibular joint are_______________?

• 1. Fibroblast like
• 2. Macrophage like
• 3. Lmphocyte like
• 4. Plasma cell like

Question: Maxillary sinus is described as a four sided pyramid containing base, apex, roof and floor. The apex of maxillary sinus extends________________?

• 1. Laterally into zygomatics process of maxilla
• 2. Medially into zygomatic process of maxilla
• 3. Laterally into lateral nasal wall
• 4. Superiorly into floor of orbit

Question: The process of recesses formation in maxillary sinus is most frequently seen with________________?

• 1. Zygomatic process
• 2. Frontal process
• 3. Alveolar process
• 4. Palatine process

Question: Haversion systems (osteons) are found primarily in the_________________?

• 1. Spongy bone
• 2. Periosteum
• 3. Alveolar bone proper
• 4. Endosteum

Question: Alveolar bone proper is also known as: or Which of the following is seen as lamina dura in an IOPA radiograph ?

• 1. Lamina lucida
• 2. Lamina densa
• 3. Lamina propria
• 4. Lamina dura

Question: Basic metabolic unit of bone is_______________?

• 1. Osteon
• 2. Osteoblast
• 3. Osteocyte
• 4. Osteoclast

Question: Second arch derivatives are all except_________________?

• 1. Stapes
• 2. Malleus and incus
• 3. Styloid process
• 4. Superior part of hyoid bone

Question: The type of bone present in the labial area of anterior teeth is_________________?

• 1. Cortical
• 2. Cancellous
• 3. Osteophytic
• 4. Exophytic