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OMSB Medical Laboratory (Lab Technicians) ( Medical Laboratory (Lab Technicians)) Practice Tests & Test Prep by Exam Edge - Review


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Oman Medical Specialty Board Medical Laboratory (Lab Technicians) - Reviews


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See why our users from 154 countries love us for their exam prep! Including 140 reviews for the OMSB Medical Laboratory (Lab Technicians) exam.

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Oman Medical Specialty Board Medical Laboratory (Lab Technicians) - Test Reviews Sample Questions

Which of the following may indicate that the patient is hemorrhaging?

Correct Answer:
low rbc.


the correct answer to the question "which of the following may indicate that the patient is hemorrhaging?" is "low rbc." a low red blood cell count, or low rbc, can be a strong indicator of several health issues, one of which includes hemorrhaging or internal bleeding.

red blood cells are crucial for carrying oxygen from the lungs to various parts of the body and returning carbon dioxide back to the lungs for exhalation. when there is a drop in the rbc count, it means that the oxygen-carrying capacity of the blood has diminished, which can lead to an array of symptoms such as fatigue, weakness, shortness of breath, and dizziness.

hemorrhaging, or the loss of blood due to internal or external bleeding, directly impacts the rbc count because blood volume is lost. in cases of severe bleeding, whether visible as in injuries or hidden as in internal bleeding, the rbc count can drop rapidly, making it a critical diagnostic indicator.

however, it is important to note that low rbc can also arise from other causes. these include dietary deficiencies such as iron, vitamin b12, or folate deficiency, which are essential for rbc production. hemolysis, which is the abnormal breakdown of red blood cells, and genetic conditions like sickle cell anemia, where rbcs are abnormally shaped and break down faster, can also result in a low rbc count.

while a high white blood cell (wbc) count is typically indicative of an infection or inflammation and a high platelet count may point towards various conditions including inflammatory disorders or bone marrow disease, they are not direct indicators of hemorrhaging. therefore, among the given options, "low rbc" is the most relevant answer to the question regarding an indication of hemorrhaging.

Which of the following would be considered primary lymphatic tissue?

Correct Answer:
bone marrow


to answer the question about which of the following would be considered primary lymphatic tissue, it is important to understand the distinction between primary and secondary lymphatic tissues within the immune system. primary lymphatic tissues are where lymphocytes (a type of white blood cell crucial for immune responses) are formed and mature. these include the bone marrow and the thymus.

bone marrow is a type of primary lymphatic tissue where all blood cells, including lymphocytes, are produced. specifically, it is the site of origin for b cells and the initial production site of precursor t cells before their maturation in the thymus. the bone marrow provides a nurturing environment where these cells develop and prepare to function in the immune response.

the thymus, another primary lymphatic tissue, is where t cells mature. located in the chest, just above the heart, the thymus is active and grows until puberty, after which it begins to shrink. the process of t cell maturation in the thymus is crucial for developing a functional and self-tolerant t cell repertoire that can effectively respond to pathogens while ignoring the body’s own tissues.

on the other hand, secondary lymphatic tissues include lymph nodes, spleen, and gut-associated lymphatic tissue (galt), among others. these tissues are not involved in the maturation of lymphocytes, but rather in their activation and proliferation in response to pathogens. lymph nodes filter lymph fluid and provide a site for interaction between lymphocytes and antigens, leading to immune activation. the spleen filters blood, removing old cells and pathogens, and also supports immune responses to blood-borne antigens. galt, which includes tonsils and peyer's patches, monitors and responds to pathogens in the digestive tract.

therefore, based on the understanding of where lymphocytes mature, bone marrow is correctly identified as primary lymphatic tissue in the given choices. the other options listed—lymph nodes, spleen, and gut-associated lymphatic tissue—are classified as secondary lymphatic tissues, as they are involved in the immune response after lymphocytes have matured.