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Tag Archives: usmle qbank
Holoprosencephaly Malformation
Autopsy of an infant who died on his second day of life reveals fuse cerebral hemispheres. The midline forebrain fissure is completely absent. Other abnormalities include the presence of a single ventricle, fused basal ganglia, and absent olfactory nerves. This … Continue reading
Posted in Pathology
Tagged absent olfactory nerves, Agenesis, amniotic band syndrome, anencephaly, BLUE STAR, BLUESTAR, Clubbed feet, Deformation, Disruption, fetal alcohol syndrome, fused basal ganglia, Holoprosencephaly Malformation, Incomplete division of the forebrain, intrinsic developmental abnormality, pathology, polydactyly, Question bank usmle, Sequence, single ventricle, syndactyly, usmle qbank, USMLE Review
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Cherry Hemangiomas (Angiomas)
The small, vascular bright-red, papular lesions shown on the image are called cherry hemangiomas and are the most common being vascular tumors in adults. Cherry hemangiomas appear during the most common benign vascular tumors in adults. Cherry hemangiomas appear during … Continue reading
Long Thoracic Nerve Injury
A 24-year-old male complains of clumsiness of his right arm. The patient is asked a wall and push against it with both hands. Abnormal prominence of the right inferior scapular angle is observed during the maneuver. What muscle/muscles is most … Continue reading
Obturator Nerve Injury
The obturator nerve is the only nerve that exits the pelvis via the obturator foramen. This nerve innervates the adductor compartment of the thigh after dividing into anterior and posterior branches subsequent to leaving the pelvis. The anterior branch innervates … Continue reading
Posted in Anatomy
Tagged adductor compartment, adductor longus, advanced bladder carcinoma, Anatomy, BLUE STAR, BLUESTAR, Bluestarr, gracilis, lymph node dissection, medicine, obturator foramen, Obturator Nerve Injury, pectineus, pelvis, Question bank usmle, usmle qbank, USMLE Review, weakness and spasm of the adductor compartment muscles.
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Prepattelar Bursitis (Housemaid knee)
The prepatellar bursa located between the patella and the overlying skin and prepatellar tendon. It is lined by synovium and contains very little fluid. Its function is to diminish friction and ensure maximal range of motion at the knee. Chronic … Continue reading
Posted in Anatomy
Tagged Anatomy, Basic Sciences, BLUE STAR, BLUESTAR, Bluestarr, crepitance, diminish friction of the knee, disease, ensure maximal range of motion at the knee, erythema, fluctuant edema over the lower pole of the paella, housemaid knee, knee joint disease, knee pain, lower extremity diseases, prepatellar bursa, prepatellar bursitis, prepatellar tendon, Question bank usmle, redness and inability to flex the knee, repeated kneeling, swelling, symptoms of prepatellar bursitis, synovium, tenderness to palpation, usmle qbank, USMLE Review
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External Branch of Superior Laryngeal Nerve Injury
A 54-year-old female undergoes thyroidectomy for several thyroid nodules that were suspicious for malignancy on fine needle aspiration. while ligating the superior thyroid artery, the surgeon accidentally serves a nearby nerve. Which muscle/muscles is denervated as a result of this … Continue reading
Posted in Anatomy
Tagged Anatomy, aryepiglotticus muscles, Basic Sciences, BLUE STAR, BLUESTAR, Bluestarr, common carotid artery, cricothyroid, disease, external branch of the superior laryngeal nerve, inferior thyroid artery, laryngeal mucosa, laryngeal muscles, larynx, Lateral cricoarytenoid, parathyroid glands, Question bank usmle, recurrent laryngeal nerves, superior thyroid artery, superior thyroid vein, Thyroarytenoid, thyrocervical trunk, thyroid glands, thyroidectomy, usmle qbank, USMLE Review, vocal folds
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Genetic factors are the most important determinator in peak bone mass.
Bone mass is a major determinant risk for osteoporotic fractures. Bone mass increase during childhood and adolescence, peaking between 20 and 30 years of age. Epidemiological and twin studies have shown than genetic factors are responsible for 75% of the … Continue reading
Posted in Physiology
Tagged Basic Sciences, BLUE STAR, BLUESTAR, Bluestarr, bone density curves, bone disease, bone mass curve, calcium intake, disease, genetic and bone mass density, genetic factors in bone mass density, lower bone densities, major determinant risk for osteoporotic fractures, osteoporosis, Osteoportic fractures, peak bone mass, Physiology, polymorphism, Question bank usmle, usmle qbank, USMLE Review, variation in peak bone mass
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Vitamin C (ascorbic acid) Deficiency
Vitamin C cannot be synthesized endogenously and therefore must be consumed in the human diet. This is typically not a problem, as ascorbic acid is abundantly found in fruits and vegetables (while also being present to a lesser extent in … Continue reading
Posted in Biochemistry
Tagged accelerates hydroxylation and amidation reactions, activation of prolyl and lysyl hydroxlase precursors, anemia, ascorbic acid deficiency, Basic Sciences, Biochemistry, Biochemistry Clinical disease, biosynthetic pathways, bleeding into joint spaces, BLUE STAR, BLUESTAR, Bluestarr, collagen impaired, disease, hydroxylation of procollagen, hyperkeratotic papular rashes, impaired wound healing, leg pain and fatigue, painful gums, Question bank usmle, Scurvy, secondary periodontal infection, subperiosteal hematomas, tibial subperiosteal hematomas, usmle qbank, USMLE Review, vitamin c deficiency, weakened immune response to local infections
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