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DANB's ORB (ORB) Practice Tests & Test Prep by Exam Edge - Review


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DANB's Oregon Basic Dental Assisting - Reviews


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See why our users from 154 countries love us for their exam prep! Including 185 reviews for the DANB's ORB exam.

Exam Edge is an industry leader in online test prep. We work with institutional partners to offer a wide array of practice tests that will help you prepare for your big exam. No matter how niche your field of interest might be, we're here to help you prepare for test day.

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DANB's Oregon Basic Dental Assisting - Test Reviews Sample Questions

The most common infections occupationally transmitted via sharps injuries during patient care are:





Correct Answer:
hep b, hep c, and hiv.


the most common infections transmitted through occupational exposure, particularly via sharps injuries during patient care, are hepatitis b (hep b), hepatitis c (hep c), and human immunodeficiency virus (hiv). these infections are of significant concern due to their severe health implications and the modes of transmission.

hepatitis b is a viral infection that affects the liver and can lead to chronic disease and liver cancer. it is highly infectious and can be transmitted through exposure to infected blood and other bodily fluids, often through needlesticks, cuts, or punctures from sharp instruments contaminated with an infected patient's blood.

hepatitis c is another liver disease caused by a virus, and like hepatitis b, it is transmitted through direct contact with infected blood. although hepatitis c leads to similar health issues as hepatitis b, it is more likely to develop into chronic liver disease.

hiv, the virus that causes acquired immune deficiency syndrome (aids), severely damages the immune system and reduces the body's ability to combat various diseases and infections. hiv is also primarily spread through direct contact with infected blood, semen, or vaginal fluids, and sharps injuries present a notable risk for transmission to healthcare workers.

it is critical for healthcare facilities to implement stringent safety protocols to prevent sharps injuries and to provide adequate training for all personnel. this includes the use of safer needle devices, proper disposal methods, and immediate action plans following any exposure incident to minimize the risk of these infections.

while tuberculosis is another serious infection associated with healthcare settings, it is primarily transmitted through the respiratory route when a person inhales air droplets from a cough or sneeze of an infected individual. tuberculosis does not typically spread through sharps injuries but is mentioned here as another significant occupational hazard in healthcare environments.

in summary, the prevention and management of hep b, hep c, and hiv in medical settings are crucial due to the ease of transmission through sharps injuries and the serious health consequences of these infections. proper training, safety equipment, and health protocols are essential to protect healthcare workers from these occupational hazards.

Which of the following landmarks of the tongue is associated with the Ducts of von Ebner’s salivary glands?





Correct Answer:
circumvallate papillae


the tongue, a muscular organ located within the oral cavity, is not only essential for various functions such as tasting, swallowing, and speaking, but also features several distinct types of structures known as papillae. among these, the circumvallate papillae are particularly noteworthy due to their size and their association with the ducts of von ebner’s salivary glands.

the circumvallate papillae are among the few types of papillae on the tongue, and they are characterized by their large, round shape and a distinct border that seems to encircle them, hence the name "circumvallate" which is derived from latin, meaning "surrounded by a wall." these papillae are located towards the back of the tongue, forming a v-shaped row that borders the terminal sulcus, which is a groove that marks the division between the anterior two-thirds and the posterior one-third of the tongue.

each circumvallate papilla is equipped with taste buds on its lateral surfaces, which are capable of detecting the five basic tastes: sweet, sour, bitter, salty, and umami. however, what sets these papillae apart from others is their association with the ducts of von ebner’s glands. these glands are minor salivary glands that produce a serous, enzyme-rich saliva. the primary function of this saliva is to flush the deep moats surrounding each circumvallate papilla, which helps to dissolve food particles and chemicals for improved taste sensation.

the secretion from von ebner’s glands is crucial not only for initiating digestive processes but also for maintaining oral hygiene by washing away food debris and potential pathogens. this mechanism highlights the intricate design of the tongue's surface, tailored to optimize the sense of taste which is vital for assessing the quality and safety of food.

in comparison to other landmarks on the tongue such as the sublingual folds, plica fimbriatae, and incisive papilla, the circumvallate papillae are unique in their structure and function. the sublingual folds and plica fimbriatae primarily aid in the movement and flexibility of the tongue, whereas the incisive papilla, located behind the front teeth, serves as a guide for speech movements but does not involve salivary glands like von ebner’s.

understanding the role of circumvallate papillae and the associated ducts of von ebner's glands enriches our comprehension of oral physiology and underscores the complexity of sensory and digestive functions orchestrated within the mouth. this knowledge is crucial for professionals in the medical and dental fields, particularly those specializing in otolaryngology and gastroenterology.