MDS PREP
The muscle assisting in mastication but not supplied by mandibular nerve is
1.masseter 2.buccinator
3.mylohyoid 4.tensor veli palatine
Anatomy
Answer: 4
The muscle assisting in mastication but not supplied by mandibular nerve is tensor veli palatine
The medial pterygoid muscle is attached to the
1. lateral surface of lateral pterygoid plate
2. lateral surface of greater wing of sphenoid
3. medial surface of lateral pterygoid plate
4. medial surface of medial pterygoid plate
Anatomy
Answer: 3
The medial pterygoid muscle is attached to the medial surface of lateral pterygoid plate
A wound to the posterior left axillary line, between the ninth and tenth rib, and extending approximately 5 cm deep, will most likely damage which organ?
1) Ascending colon
2) Duodenum
3) Left kidney
4) Spleen
Anatomy
Answer: 4
The spleen follows the long axes of ribs 9 to 11 and lies mostly posterior to the stomach, above the colon, and partly anterior to the kidney. It is attached to the stomach by a broad mesenterial band, the gastrosplemic ligament. Therefore, it is the most likely organ of the group to be pierced by a sharp object penetrating just above rib 10 at the posterior axillary line. Note that the pleural cavity, and possibly the lower part of the inferior lobe of the lung, would be pierced before the spleen. The ascending colon (choice 1) is on the wrong side (the right) to be penetrated by a sharp instrument piercing the left side.
Most of the duodenum (choice 2) is positioned too far to the right to be affected by this injury.
Even the third part of the duodenum, which runs from right to left, would still be out of harm's way. In addition, the duodenum lies at about levels L1 to L3, placing it too low to be injured in this case.
The superior pole of the left kidney (choice 3) is bordered by the lower part of the spleen. However, it is crossed by rib 12 and usually does not extend above rib 11. It would probably be too low and medial to be injured in this case because this penetration is at the posterior axillary line.
The first teeth to erupt in the dental arches of the human being are the, primary
1. mandibular cuspids
2. maxillary central incisors.
3. mandibular central incisors
4. maxillary first molars
Dental Anatomy
Answer: 3
The first teeth to erupt in the dental arches of the human being are the, primary mandibular central incisors
Tongue is protruded by which of the following muscle
1. Hyoglossus
2. Palatoglossus
3. Myelohyoid
4. Genioglossus
Anatomy
Answer: 4
Tongue is protruded by Genioglossus
In an average child the mixed dentition period is from
1. 10 years to 25 years
2. 4 yrs to 12 yrs
3. 8 yrs to 17 yrs
4. 6 yrs to 13 years
Dental Anatomy
Answer: 4
In an average child the mixed dentition period is from 6 yrs to 13 y
How soon after the eruption of permanent tooth is the apex usually fully developed?
1. Immediately
2. 3-6 months
3. 2-3 years
4. 6-9 years
Dental Anatomy
Answer: 3
Afet tooth eruption in permanent teeth the apex is fully developed after 2-3 years
The beginning of active eruption of a human tooth occurs
1. before the root has begun to develop
2. coincidental with the beginning of root formation
3. before the root has begun to develop
4. after one half of the root is formed
Dental Anatomy
Answer: 4
The beginning of active eruption of a human tooth occurs after one half of the root is formed