514.Papillary carcinomas spread by the route of

a.Lymphatics
b.Hematogenous
c.Direct
d.All

Ans-a.Lymphatics

Follicular carcinoma spreads via hematogenous route.Medullary and papillary carcinoma spreads via lymphatics and anaplastic has a direct spread

513.All structures are preseved in radical neck surgery except

a.Carotid arteries
b.Cranial nerves 7,9,10
c.Phrenic nerve
d.Accessory nerve

Ans-d.Accessory nerve 

512.All are the causes of hypokalemia except

a.Following trauma
b.starvation
c.loss of GIT secretions
d.All of the above

Ans-d.All of the above

511. When the dentist enters the operatory, the patient, who is new to the office, stands close to the wall, has his arms folded, and is looking at the floor. The dentist should initiate communication by saying which of the following?

A. Let's get going, I've got a lot to do.
B. What are you angry about?
C. Didn't my assistant get you seated?
D. You seem uncomfortable; did you have a bad dental experience?
E. Hi, I'm Doctor Wilson, what brings you here today?

510.If a patient suddenly becomes unconscious during treatment, the practitioner should immediately assess the patient's

A. airway and pulse.
B. airway and blood pressure.
C. pulse and blood pressure.
D. color and pupils.

509. A 2-day-old developing plaque consists primarily of

A. Treponema species.
B. Bacteroides species.
C. filamentous organisms.
D. gram-positive cocci and rods.
E. a structureless, non-mineralized pellicle.

508. A major sensory innervation of the temporomandibular joint is derived from the

1. great auricular nerve.
2. auriculotemporal nerve.
3. inferior alveolar nerve.
4. temporal branches of the facial nerve.

507. A fracture of the hamulus affects the action of which of the following muscles?

A. Superior constrictor of the pharynx
B. Levator veli palatini
C. Tensor veli palatini
D. Salpingopharyngeus
E. Buccinator

506. A disturbance in cartilage formation in a fetus results in deformities of theA disturbance in cartilage formation in a fetus results in deformities of the

1. sphenoid and zygomatic bones.

2. axial skeleton and the base of the skull.

3. axial skeleton and the flat bones of the skull.

4. petrous portion of the temporal bones and the parietal bones.