301 Flashcards
Which of the following pairings of organs, origins and arteries is correct?
A.
Celiac artery
Foregut
Liver, Pancreas, Distal duodenum
B.
Superior mesenteric artery
Midgut
Proximal duodenum, Appendix
C.
Inferior mesenteric artery
Hindgut
Proximal Transverse Sigmoid Rectum
2/3 colon. colon.
D.
Celiac artery
Foregut
Esophagus, Stomach, Proximal duodenum
E.
Inferior mesenteric artery
Midgut
Gallbladder, Cecum, Distal 1/3 transverse colon
D
What is the embryological origin of ligamentum teres (Round ligament)?
A. Ventral mesentery
B. Left umbilical vein
C. Dorsal mesentery
D. Umblical artery E. Vitelline duct
B. Left umbilical vein
Which of the following malformations can occur both in prenatal and postnatal life?
A. Hirschsprung disease B. Pyloric stenosis
C. Duodenal stenosis
D. Omphalocele
E. Gastroschisis
B. Pyloric stenosis
Which of the following statements are incorrect?
I. Von Ebner glands are found in fungiform papillae.
II. Sublingual salivary glands contain both serous and the conspicuous, mucous acini
III. Submucosal glands are only seen in duodenum but not in esophagus.
IV. Pylorus has simple branched tubular gland.
V. In cardia region, the number of gastric pits is more compared to other parts. VI. Auerbach nerve plexus locates in submucosa,
VII. Fundus is rich region for chief and parietal cells,
VIII. Appendix contains villi
IX. Urogastrone is secreted by crypts of Lieberkuhn.
A. II - III - IV- V- VII- IX
B. I- III - V - VI - VIII - IX
C. I - II - IV - V - VI- VII
D. II - III - V - VI - VIII - IX
E. I - IV - V - VI - VII IX
B
Which of the following disorder is a functional gastrointestinal disease? A. Peptic Uleer
B. Crohn’s Disease
C. Irritable Bowel Syndrome
D. Gallstones
E. Colonic Diverticular Disease
C
Which of the following symptoms suggests lower gastrointestinal disease? A. Hematemesis
B. Jaundice
C. Dysphagia
D. Pirozis
E. Hematochezia
E
Which gastrointestinal disease causes tenderness at McBurney’s point? A. Acute Cholecystitis
B. Diverticulitis
C. Pancreatitis
D. Acute appendicitis E. Peritonitis
D
Which of the following diseases leads to direct bilirubinemia? A. Gilbert Disease
B. Hemolysis
C. Large Hematoma
D. Crigler Najjar Syndrome E. Dubin-Johnson Syndrome
E
Which of the following diseases is the most common genetic causes of indirect hyperbilirubinemia?
A. Gilbert’s Syndrome
B. Mirizzi Syndrome
C. Rotor Syndrome
D. Crigler Najjar Syndrome E. Dubin-Johnson Syndrome
A
What should be the second line in the abdominal physical examination? A. Percussion
B. Auscultation
C. Palpation
D. Rectal Examination E. Inspection
B
Which one is an inflammatory bowel disease (IBD)? A. Crohn’s disease
B. Cystic fibrosis
C. Type I diabetes
D. Colon cancer
E. Meckel’s diverticulum
A
A 25 year old male had a third molar extracted from his lower jaw. This resulted in the loss of general sense from the anterior two thirds of the tongue. This loss was most likely due to injury of which of the following nerves?
A. Auriculotemporal B. Chorda tympani C. Lingual
D. Mental
E. Inferior alveolar
C
A 30 year old man is admitted to the hospital after a middleweight boxing match, during physical examination the strength and symmetry of strength in opening the jaws are tested, Which of the following muscles is the most important in jaw protrusion and depressing the mandible?
A. Anterior portion of temporalis B. Lateral pterygoid
C. Medial pterygoid
D. Masseter
E. Platysma
B
54 year old male is admitted to the emergency department with severe upper abdominal pain. Gastroscopy reveals a tumor in the antrum of the stomach.
A CT scan is ordered to evaluate lymphatic drainage of the stomach. Which of the following lymph nodes is most likely to be involved in a malignancy of the stomach?
A. Celiac
B. Superior mesenteric C. Inferior mesenteric D. Lumbar
E. Ileocolic
A
During a scheduled laparoscopic cholecystectomy in a 40 year old female patient, the resident accidentally clamped the hepatoduodenal ligament instead of the cystic artery. Which of the following vessels would most likely be occluded in this iatrogenic injury?
A. Superior mesenteric artery B. Proper hepatic artery
C. Splenic artery
D. Common hepatic artery
E. Inferior vena cava
B
A 62 year old male alcoholic is admitted to the hospital after vomiting dark red blood (hematemesis). Endoscopy reveals ruptured esophageal varices, resulting from portal hypertension. Which of the following venous tributaries to the portal system anastomoses with caval veins to cause the varices?
A. Splenic
B. Left gastroomental C. Left gastric
D. Left hepatic
E. Right gastric
C
A 47 year old man is admitted to the emergency department with excessive vomiting and dehydration. Radiographic images demonstrate that part of the bowel is being compressed between the abdominal aorta and the superior mesenteric artery. Which of the following intestinal structures is most likely to be compressed?
A. Descending part of duodenum
B. Transverse colon
C. Horizontal part of duodenum
D. Superior part of duodenum
E. Jejunum
C
Which of the following statement is right to distinguish the jejunum from the ileum?
A. Jejunum has a thinner wall compared with the ileum
B. Jejunum has less numerous and smaller circular fold compared with the ileum
C. Jejunum has more numerous vascular arcades compared with the ileum
D. Jejunum has more numerous lymphatic follicles beneath the mucosa compared with the ileum
E. Jejunum has less villi compared with the ileum
B
A 45 year old male is admitted to the hospital with a massive hernia that passes through the inguinal triangle (of Hesselbach). Which of the following structures is used to distinguish a direct inguinal hernia from an indirect inguinal hernia?
A. Inferior epigastric vessels
B. Femoral canal
C. Inguinal ligament
D. Rectus abdominis muscle (lateral border)
E. Pectineal ligamen
A
A 78 year old woman is admitted to the hospital with complaints of abdominal pain. Radiographic examination reveals diverticulosis and diverticulitis of the lower portion of the descending colon, with diffuse ulcerations. It is determined that the involved area of the bowel should be removed. If the patient’s anatomy follows the most typical patterns, which vessels and nerves will be gut during the operation?
A. Branches of the vagus nerve and middle colic artery
B. Superior mesenteric plexus and superior rectal artery
C. Branches of pelvic splanchnic nerves and left colic artery
D. Branches of vagus nerve and ileocolic artery
E. Left thoracic splanchnic nerve and inferior mesenteric artery
C
Which carriers are used to transport the NH3 produced in muscle degradation of nitrogenated compounds via blood to the liver?
A. Alanine and glutamine
B. Urea and alanine
C. NH4 and glutamate
D. Glutamate and glutamine
E. a-Ketoglutarate and urea
A
Which of the following statements correctly, describes the molecule shown below?
COO- |
C=0
|
CH3
A. It can spontaneously decarboxylate.
B. A transamination reaction would convert it to alanine.
C. A carboxylase reaction converts it to acetyl CoA
D. It requires NADPH to be converted to lactate.
E. It cannot be converted back to fatty acids
C. A carboxylase reaction converts it to acetyl CoA
The major purpose of the *glucose-alanine cycle” between the liver and muscle tissues allows for which of the followings?
A. The alanine taken up by the muscle to be converted back to glucose.
B. The liver to store the alanine as fat.
C. The muscle to deliver its excess nitrogen to the liver for excretion, and ultimately get back glucose, from the liver, to continue doing glycolysis
D. The liver to release alanine into the blood for other tissues to use, and get back glucose so it can store it as fat.
E. The liver to deliver its excess nitrogen for the muscles to use in protein synthesis, and get glucose from the muscle in return.
C
Homocysteine, in a single enzyme-catalyzed reaction can be converted into which substance?
A. Cysteine
B. Serine
C. Propionyl CoA
D. Either methionine or cystathionine
E. Either propionyl CoA or cysteine
D
Glucose 6-phosphate is at the crossroads of many metabolic pathways, and its fate depends on the energy needs of a sell. Which of the following incorrectly pairs an enzyme that reacts directly with glucose 6-phosphate with a product of that metabolic pathway?
A. Phosphoglucoisomerase: pyruvate
B. Glucose 6 phosphatase; glucose
C. Glucose 6 phosphate dehydrogenase: ribose, 5 phosphate
D. UDP glucose pyrophosphorylase: glycogen
E. Glucose 6-phosphate dehydrogenase; NADPH
C
There are several known diseases that are caused by genetic abnormalities in the carnitine system. The clinical symptoms can range from mild, recurrent muscle cramping to severe weakness, and death. Carnitine therapy has proved effective in some cases, as has the replacement of normal dietary fat by triacylglycerols containing medium chain length fatty acids. These diseases have become treatable disorders because medical students have learned the biochemistry of which metabolic reaction?
A. B-oxidation of fatty acids
B. Glycolysis
C. Methylation reactions by S-adenosylmethionine D. Pyrimidine nucleotide synthesis
E. Uren cycle
A
Which of the following conditions is related to neonatal jaundice, also known as physiological jaundice?
A. Caused by maternal antibody-induced lysis of infant erythrocytes
B. Results from normal bilirubin generation but inadequate bilirubin conjugation
C. Results from severe hepatic failure
D. Always causes neuropathology including seizures and fever
E. Results from deficiency of folate during pregnancy
B
Which one is a precursor of the high-energy storage compound greatine phosphate?
A. Histidine B. Tyrosine C. Tryptophan D. Glycine
E. Glutamate
D