Lab cycle 3 - 2021
Clinical Knowledge Quiz: Lab Cycle 3 - 2021
Test your understanding of clinical biochemistry and hematology with our comprehensive quiz. This quiz consists of 37 carefully crafted questions designed to challenge your knowledge on topics such as coagulation factors, lipid metabolism, and hormonal regulation.
Join now and evaluate your expertise!
- In-depth questions covering a range of clinical topics
- Perfect for students and professionals in the medical field
- Sharpen your knowledge and prepare for exams
Phosphates are moved into cells by Select one:
Haemolysis, tumour damage, rhabdomyolysis
Tumour damage, insulin, rhabdomyolysis
Haemolysis, tumour damage, alkalosis (alkalaemia)
Alkalosis (alkalaemia), tumour damage, insulin
Alkalosis (alkalaemia), insulin
Phosphates are released from cells by Select one:
Alkalosis (alkalaemia), tumour damage, insulin
Haemolysis, tumour damage, rhabdomyolysis
Tumour damage, insulin, rhabdomyolysis
Haemolysis, tumour damage, alkalosis (alkalaemia)
Alkalosis (alkalaemia), insulin
PTT screens for factors Select one:
XI, IX, VIII, XIII
IX, VIII, X, V, II
VIII, X, V, XIII
XII, XI, IX, VII
IX, VIII, X, VII
Familial combined hyperlipidemia can be classified according to Fredrickson classification to Select one:
Type IIa, IIb, IV, V
Type III
Type IIa
Type IV and V type I
In men: Select one:
Over 60 years old, a prostate specific antigen level above 3 microg/L gives a 25-30% chance of cancer
Over 50 years old, a prostate specific antigen level above 4 microg/L gives a 40-50% chance of cancer
Over 40 years old, a prostate specific antigen level above 4 microg/L gives a 25-30% chance of cancer
Over 50 years old, a prostate specific antigen level above 5 microg/L gives a 25-30% chance of cancer
Over 50 years old, a prostate specific antigen level above 4 microg/L gives a 25-30% chance of cancer
Familial hypertriglyceridaemia results from Select one:
Lack of reduced number of functional LDL receptors
A molecular (gene) defect
Reduced level of lipoprotein lipase (LPL
Reduced level of lecithin:cholesterol acyltransferase lipase (LCAT)
Inability to synthesize apoA -
DIC is manifested by Select one:
Elevated levels of D-dimers, low plasma fibrinogen, normal platelets, prolonged PT and PTT
Low levels of D-dimers, low plasma fibrinogen, low platelets, prolonged PT
Elevated levels of D-dimers, normal plasma fibrinogen, low platelets, prolonged PT
Elevated levels of D-dimers, low plasma fibrinogen, normal platelets, prolonged PTT
Elevated levels of D-dimers, low plasma fibrinogen, low platelets, prolonged PT
In a molar pregnancy: Select one:
A partial mole has a purely male genome and is more likely to give choriocarcinoma than a complete mole which has a mixed genome; the chances of a molar pregnancy giving choriocarcinoma is 1 in 30
A complete mole has a purely male genome and is more likely to give choriocarcinoma than a partial mole which has a mixed genome; the chances of a molar pregnancy giving choriocarcinoma is 1 in 10
A partial mole has a purely male genome and is more likely to give choriocarcinoma than a complete mole which has a mixed genome; the chances of a molar pregnancy giving choriocarcinoma is 1 in 150000
A partial mole has a purely male genome and is more likely to give choriocarcinoma than a complete mole which has a mixed genome; the chances of a molar pregnancy giving choriocarcinoma is 1 in 20
A complete mole has a purely male genome and is more likely to give choriocarcinoma than a partial mole which has a mixed genome; the chances of a molar pregnancy giving choriocarcinoma is 1 in 40
The most common cause of hyperphosphatemia is Select one:
Rhabdomyolysis
Hypoparathyroidism
Renal disease
Congenital disorders of tubular phosphate reabsorption
Tumour lysis syndrome
Heparin enhances the activity of Select one:
Tissue factor pathway inhibitor
alpha 2-macroglobulin
Antithrombin
heparin cofactor II
Protein C
Platelet disorders involve all the following except Select one:
Use of clopidogrel
Defective platelet function
Use of warfarin
Use of aspirin
Abnormal number of platelets
Extrinsic pathway concludes with the formation of Select one:
Factor Xa
Factor VIIIa
Factor XIIa
Factor IXa
Factor VIIa
The key coagulation factors for the extrinsic pathways are
12
Tissue factor and factor 7a
11
Prekallikrein
9a
Vitamin K–dependent clotting factors include Select one:
II, VII, VIII, IX, X
II, VII, VIII, X
II, V, VIII, X
II, VII, IX, X
II, VII, VIII, IX
Which of the following statement is correct. Select one:
LDL is a main carrier of the dietary triglyceride
HDL takes cholesterol from extrahepatic tissues to the liver
Chylomicrons are normally present in fasting sample
Chylomicrons are synthesised in the liver
VLDL is synthesised in the intestine
Which of the following statements is false? Choose one answer:
Phosphate is the most predominant urine buffer
Phosphate in cells is bound to lipids
Most of the body's phosphate is in skeletal muscles
Usually phosphate changes accompany calcium changes
Phosphate in cells is bound to proteins
PTT is used to monitor therapy with Select one
P2Y12 inhibitors
Oral inhibitors of factor Xa
Vitamin K antagonists
Oral inhibitors of thrombin
Heparin
Where is Calcitonin produced?: Select one:
Andrenal glands
The parafollicular cells of the parathyroid glands
The parathyroid glands posterior to the thyroid glands
The parafollicular cells of the thyroid glands
Thyroid gland follicles
Intrinsic pathway concludes with the formation of. Choose one answer:
Factor Xa
Factor XIIa
Factor IXa
Factor VIIa
Factor VIIIa
Type IIa dyslipidaemia (according to Fredrickson) is characterized by Choose one answer:
VLDL↑
IDL↑
Chylomicrons↑
LDL↑
Test of formation of initial platelet plug include. Choose one answer:
Reptilase time, plasminogen activity
TT (thrombin time), VWF antigen
PT, PTT
Fibrinogen level, plasma D-dimer
Ristocetin cofactor activity, platelet count
Prothrombinase consists of. Select one:
Factor Xa, Va, procoagulant phospholipid surface
Factor Xa, Va, TF
Factor Xa, Va, VIIIa, procoagulant phospholipid surface
Factor Xa, Va, VIIIa
Factor Xa, VIIIa, procoagulant phospholipid surface
Ectopic adrenocorticotropic hormone is most commonly associated with/produced by: Select one:
Choriocarcinoma
Metastatic spread to the liver
Carcinoma of the head of the pancreas
Small cell carcinoma of the lung
Medullary carcinoma of the thyroid
Triglycerides are elevated in all dyslipidemias except Select one:
Type IIa
Type III
Type I
Type V
Type IIb
Parathyroid hormone: Select one:
Causes release of calcium from bone mainly by stimulating osteoclasts; directly stimulates the intestine to absorb more calcium and net result of this hormone is decrease in blood plasma calcium
Causes release of calcium from bone mainly by stimulating osteoblasts; directly stimulates the intestine to absorb more calcium and net result of this hormone is increase in blood plasma calcium
Causes release of calcium from bone mainly by stimulating osteoblasts; indirectly stimulates the intestine to absorb more calcium and net result of this hormone is increase in blood plasma calcium
Causes release of calcium from bone mainly by stimulating osteoblasts; indirectly stimulates the intestine to absorb more calcium and net result of this hormone is decrease in blood plasma calcium
Causes release of calcium from bone mainly by stimulating osteoclasts; indirectly stimulates the intestine to absorb more calcium and net result of this hormone is increase in blood plasma calcium
Hypomagnesemia is most likely to be associated with all of the following. Select one:
Alcoholism, Hyperkalemia, Hypocalcemia, preeclampsia, antacids/laxatives
Alcoholism, antacids/laxatives, Hypokalemia, Hypercalcemia, Chronic diarrhea
Alcoholism, Hypokalemia, Hypercalcemia, Chronic diarrhea, Ventricular arrhythmias
Alcoholism, Hyperkalemia, Hypocalcemia, preeclampsia, Ventricular arrhythmias
Alcoholism, Hypokalemia, Hypocalcemia, Chronic diarrhea, Ventricular arrhythmias
Prothrombin time screens for factors. Select one:
X, V, IX
V, prothrombin, fibrinogen, VIII
X, V, prothrombin
VII, X, prothrombin, XI
V, prothrombin, fibrynogen, XII
Prolonged PT or PTT with a normal platelet count. Select one:
Haemophilia B
DIC
Vitamin K deficiency
Factor VII deficiency
Haemophilia A
Hyperparathyroidism causes hypophosphatemia through. Select one:
Release of phosphate from bones
Failure of the kidneys to inhibit renal proximal tubule phosphate reabsorption
Increased intestinal phosphorus absorption
Failure of the bones to inhibit phosphate reabsorption
Increase of phosphate excretion by the kidney
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