NBDHE PRACTICE EXAM TEST WITH VERIFIED SOLUTIONS RATED A.

NBDHE PRACTICE EXAM TEST WITH VERIFIED SOLUTIONS RATED A. Which is the functional unit of striated muscle? A. A band B. I band C. H Zone D. Sarcomere Correct Answer -D. Sarcomere Slightly damaged tissue completely returns to its normal structure and function in which healing process? A. Primary intention B. Regeneration C. Repair D. Secondary intention Correct Answer -B. Regeneration The two buccal roots are normally about the same length in: A. The maxillary first molars only B. the maxillary second molars only C. the maxillary third molars only D. both maxillary first and second molars Correct Answer -B. the maxillary second molars only In a normal differential blood count, which is the most numerous white blood cell? A. Basophils B. Lymphocytes C. Monocytes D. Neutrophils Correct Answer -D. Neutrophils The most common autopsy finding in instances of sudden death as a result of myocardial infarction is: A. aneurysm of the heart wall B. coronary thrombosis C. fibrous pericarditis D. valvular prolapse Correct Answer -B. coronary thrombosis Which is not a characteristic of salivary glycoproteins? A. block binding of bacteria to pellicle B. enhance binding of bacteria to tooth surfaces C. interact with calcium and phosphate in hydroxyapatite D. result from lysis of bacterial cell walls Correct Answer -B. enhance binding of bacteria to tooth surfaces Each of the following statements is correct regarding saltatory conduction except one. What is the exception? A. it involves the nodes of Ranvier B. it is associated with unmyelinated axons C. it is energy saving D. it is faster Correct Answer -B. It is associated with unmyelinated axons Each of the following is a rule for antibiotic selection when managing an oral infection except one. Which is the exception? A. debride infectious debris B. provide effective environment for host immune response C. select agent to which infecting organism is susceptible D. select agent with broadest spectrum of activity Correct Answer -D. Select agent with broadest spectrum if activity Thyroxine increases each of the following except one. Which is the exception? A. metabolic rate and heart production B. oxygen consumption, breathing, and cardiac output C. production of thyroid stimulating hormone by the pituitary gland D. protein synthesis and enzyme production by cells Correct Answer -C. production of thyroid stimulating hormone by the pituitary gland Which is correct concerning the primitive groove? A. assists in the formation of trilaminar germ disc B. located on the endoderm C. located on the mesoderm D. precursor of the bilaminar germ disk Correct Answer -D. precursor of the bilaminar germ disk Which is a pathologic wearing away of tooth structure through some abnormal mechanical process? A. Abrasion B. Attrition C. Bruxism D. Erosion Correct Answer -B. Attrition Which characteristic of bacteria influences relative numbers in early plaque? A. adherence to pellicle B. formation of bacterial coaggregations C. multiplication in an aerobic environment D. survival in an acid environment Correct Answer -D. adherence to pellicle How many milligrams of epinephrine is contained in a dental cartridge of prilocaine with 1:200,000 epinephrine? A. 0.005 B. 0.009