Lectures

Embryology Question Set 1

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    About the Lecture

    The lecture Embryology Question Set 1 by Lecturio USMLE is from the course Embryology - High Yield Questions.


    Included Quiz Questions

    1. Tbx1-Fgf8 pathway plays an important role in development of thyroid glands.
    2. A new-born screening for congenital hypothyroidism would have definitely diagnosed the girl in neonatal period.
    3. FNAC will be very helpful in diagnosis of this girl.
    4. Congenital hypothyroidism due to thyroid dysgenesis cannot present at 9 years of age, hence autoimmune thyroiditis is more likely in this girl.
    5. Lingual thyroid is the least frequent ectopic location of thyroid gland.
    1. Computed Tomography (CT) scanning of abdomen is the most sensitive non-invasive diagnostic technique.
    2. Pancreatic divisum is the most common congenital anomaly of pancreas.
    3. Most of the patients having pancreatic divisum are asymptomatic and are identified incidentally.
    4. Endoscopic ultrasonography reveals absence of “stack sign”.
    5. Patients with recurrent episodes of pancreatitis due to pancreatic divisum can be managed endoscopically or surgically.
    1. Coccygeal pits
    2. Midline sacral hemangioma
    3. Dermal sinus
    4. Hairy patch over median lumbosacral region
    5. An 8 mm deep atypical dimple 40 mm from anal verge
    1. In a monochorionic twin pregnancy, increased fetal NT thickness may indicate Twin-to-twin Transfusion Syndrome (TTTS).
    2. Increased fetal NT thickness between 11 to 14 weeks of gestation is highly specific for trisomy 21.
    3. Fetal NT screening between 11 to 14 weeks of gestation is highly sensitive for cardiac abnormalities in euploid fetuses.
    4. Umbilical cord around fetal neck helps the sonologist to measure fetal NT thickness more accurately.
    5. The mechanism for increased fetal NT is always venous congestion.
    1. Meckel’s diverticulum is usually found on mesenteric border of the ileum.
    2. Meckel’s diverticulum is the most common congenital gastrointestinal anomaly in infants.
    3. Meckel’s diverticulum is supplied by omphalomesenteric artery, a branch of ileal branch of superior mesenteric artery.
    4. Most common ectopic mucosa found in Meckel’s diverticulum is that of gastric origin.
    5. The distance of Meckel’s diverticulum from ileocecal valve depends on the age of the patient.
    1. Recurrent aspiration in a 9-month-old infant
    2. Incidental finding in chest radiograph in a 14-year-old girl
    3. Progressive dysphagia in a 26-year-old man
    4. Recurrent infections of cyst in a 6-year-old boy
    5. Cough, dyspnea and hemoptysis in a 30-year-old man
    1. CHARGE syndrome
    2. VATER syndrome
    3. VACTERL syndrome
    4. WAGR syndrome
    5. MURCS association
    1. Neonates with severe coarctation of the aorta can present with acidosis after closure of the ductus arteriosus.
    2. In patients with coarctation of the aorta, presence of a systolic ejection click or thrill in suprasternal notch suggests associated subaortic stenosis.
    3. After surgical repair of coarctation of aorta, rebound hypertension in immediate post-operative period suggests surgical failure.
    4. As surgical repair is difficult, it is desirable to delay surgery up to 2 years of age even in stable children.
    5. In coarctation of aorta, pressure erosion caused by enlarged collateral vessels produce notching of superior border of the ribs.
    1. Normal haemoglobin in patients with Tetralogy of Fallot does not rule out iron-deficiency anaemia.
    2. Cerebral arterial thrombosis is more common than cerebral venous thrombosis.
    3. Tricuspid valve is the most common valve affected by bacterial endocarditis in an unoperated Tetralogy of Fallot.
    4. Refractory heart failure is a common complication of Tetralogy of Fallot.
    5. Common age of presentation of brain abscess is between 6 to 12 months.
    1. Double aortic arch
    2. Gastroesophageal reflux disease
    3. Recurrent viral wheeze
    4. Congenital subglottic stenosis
    5. Laryngomalacia
    1. Danish-Drash syndrome
    2. Pepper syndrome
    3. Hutchinson syndrome
    4. Opsoclonus-myoclonus-ataxia syndrome
    5. Kerner-Morrison syndrome
    1. Calcium channel blockers are the drug of choice for control of hypertension in this condition.
    2. Adults having this condition are at increased risk of having intracranial aneurysms.
    3. Absence of family history does not rule out the condition.
    4. Genes that are mutated in this condition are located on short arm of chromosome 16 and long arm of chromosome 4.
    5. Children with this condition have increased incidence of mitral valve prolapse.
    1. Neurological symptoms are more common in children than in adults.
    2. 30-40% of the patients with Klippel-Feil syndrome have associated genitourinary abnormalities.
    3. Triad of short neck, low hairline and restriction of neck movements is present in only half of the patients.
    4. Sprengel deformity is a common association.
    5. Klippel-Feil syndrome may be familial.
    1. 2nd branchial cleft cyst
    2. Cervical lymphadenopathy
    3. Ectopic thyroid tissue
    4. 1st branchial cleft cyst
    5. Sternomastoid tumor
    1. Boys with retractile testis are not at increased risk of malignancy.
    2. Teratoma is the most common tumor developing in the undescended testis.
    3. In a boy with unilateral undescended testis, the contralateral scrotal testis is also at increased risk of malignancy.
    4. A unilateral nonpalpable testis in an otherwise healthy toddler always suggests abdominal or high inguinal testis.
    5. Ultrasonography of abdomen is the diagnostic procedure of choice to identify an abdominal testis.
    1. Marfan syndrome and Alport syndrome are common systemic associations.
    2. The boy has a progressive congenital ophthalmologic condition.
    3. Most patients with this condition have unilateral involvement.
    4. The condition may be associated with congenital glaucoma.
    5. Against-the-rule astigmatism is common.
    1. Scaphocephaly
    2. Dandy-Walker cyst
    3. Agenesis of corpus callosum
    4. Chiari II malformation
    5. Aqueductal stenosis
    1. Moebius syndrome
    2. Congenital fibrosis of extraocular muscle (CFEOM)
    3. Duane retraction syndrome
    4. Infantile spinal muscular atrophy
    5. Joubert syndrome

    Author of lecture Embryology Question Set 1

     Lecturio USMLE

    Lecturio USMLE


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