English 450-517

It is known that the gene responsible for the development of the MN blood groups has two allelic states. If the gene M is considered as the initial gene, the allelic gene N appeared due to: 

Alterations in protein digestion in the small intestine are induced by the impairment of trypsin and chymotrypsin activity. What enzyme deficiency may be the cause of this impairment?

A 34-year-old injured is unable to nod his head (impaired flexion and extension of head). This is caused by the dysfunction of the following joint:

Functioning of certain structures of the isolated heart was stopped by means of cooling. What structure was cooled providing that the heart first stopped contractions and then resumed them with a frequency twice lower than the initial one?

In patients with glycogenolysis, that is von Gierke’s disease, the conversion of glucose-6-phosphate into glucose is inhibited, which is accompanied by the improper breakdown of glycogen in the liver. The cause of this condition is the following enzyme deficiency: 

It is applied for treatment of leukopenias of different genesis, in the dental practice it is used for treatment of inflammatory diseases of the oral mucosa. Identify the drug: 

A 54-year-old patient with viral hepatitis has complication of hepatic coma caused by massive necrosis of liver epithelial cells. What kind of hepatic coma is it characteristic of?

Transfusion of Rh-incompatible blood resulted in hemolytic jaundice development in the patient. What laboratory blood value confirms this type of jaundice?

A 42-year-old patient has an inflammation of the inner ear. After the examination, the doctor revealed the affection of the first neuron bodies of the auditory analyzer. Where are they localized?

A patient consulted a doctor about the inflammation of the ethmoid bone cells (ethmoiditis). Examination revealed the disorder of blood supply to the bone. The ethmoidal cells are normally supplied with blood by the branches of the following artery: 

A patient with incised wound of trapezius muscle has been referred to a traumatology department. What cervical fascia forms sheath of this muscle?

A patient of neurological department has a sensitivity loss caused by the damage to pseudounipolar neurocytes. Pseudounipolar neurons are a kind of bipolar neurons and the only place of their localization in the human body is: 

A 66-year-old male patient has liver carcinoma with syndrome of portal hypertension. What kind of portal hypertension does the patient have?

There is a large amount of effusion in the pericardial cavity of a patient with exudative pericarditis. What cells cause such a phenomenon when their functional activity is disrupted?

An autopsy of the body of an aged man, who was suffering from acute intestinal disorder during his last 2 weeks, has revealed the following change in the rectum and sigmoid colon: brown and green film covering the mucosa is detected. The itestinal wall is thickened;the cavity sharply narrows down. Microscopy reveals mucosa necrosis of varying depth, necrotic tissue is pierced through with fibrin threads, leucocytic infiltration is observed. What diagnosis is most probable?

In the solution being used for perfusing the isolated heart of rat, the K +concentration has been increased to 8 mmol/L. What changes in the heart are to be expected? 

A 12-year-old girl has a bleeding ulcer 5 mm in diameter which is localized on the mouth floor. The ulcer is surrounded by bright-red tissue that turns white when pressed. Microscopic examination of a biopsy sample reveals a tumor constituted by a number of large cavities filled with blood. The cavities are lined with endothelial cells. Between the cavities there is stroma represented by the loose connective tissue. What is the most likely diagnosis?

pattern made by small clumps of chromatin. What are these cells called?

A patient has acute laryngotracheitis with nonproductive cough that is very exhaustive. Prescribe an antitussive drug:

 A specimen of the pia mater shows a vessel with no middle membrane in its wall, its outer membrane adheres to the surrounding tissues, the inner membrane is made up of the basal membrane and endothelium. Specify this vessel:

An animal has been given a weak solution of hydrochloric acid introduced into the duodenum through a tube. Which hormone concentration will increase in the animal?

A 50-year-old patient with a hypertensive crisis had been administered magnesium sulfate, which led to an abrupt decrease in blood pressure. The side effects of magnesium sulfate can be avoided if the following drug is administered:

A patient being treated for tuberculosis is suffering from hearing deterioration. What drug causes this complication? A) Isonicotinic acid hydrazide (Isoniazid)

Examination of a patient revealed dermatitis, diarrhea, dementia. What vitamin deficiency is the cause of this condition ?