MDS PREP
Major source of secondary scattered radiation
1) Compton effect
2) Photoelectric effect
3) Thompson effect
4) All of the above
Radiology
Answer: 1
A medication that reduces the rate of aqueous humor formation in acute glaucoma
1) phenothiazines
2) amphotericin B
3) Isoniazid
4) carbonic anhydrase inhibitors
Pharmacology Answer: 4
Carbonic anhydrase is found in erythrocytes, kidney, gut, ciliary body, choroid plexus, and glial cells.
Carbonic anhydrase inhibitors are used primarily as probes for studying renal transport mechanisms and in the treatment of glaucoma
When used to treat glaucoma, carbonic anhydrase inhibitors diminish the transport of HCO3 - and Na+ by the ciliary process, which limits intraocular pressure.
This reduces the formation of aqueous humor by up to 50%, thereby reducing the intraocular pressure. These agents can also limit CSF and endolymph formation.
Which of the following is the correct Lancefield group for Streptococcus pyogenes?
1) A
2) B
3) C
4) D
Streptococcus pyogenes is classified as Lancefield group A.
When establishing balanced occlusion, lingual cusps of maxillary posterior teeth on the non-working side should contact
1. Facial incline of the lingual cusp of mandibular posterior teeth
2. The lingual incline of the lingual cusp of mandibular posterior teeth
3. Lingual incline of the facial cusp of mandibular posterior teeth
4. None of the above
Prosthodontics
Answer: 3
Stippling is seen on
1) Marginal gingiva
2) Attached gingiva
3) Interdental gingiva
4) None of the above
Periodontics
Answer: 2
Stippling is typically observed on the attached gingiva, indicating healthy
tissue.