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clinical chemistry 2 > MLAP QUIZ > Flashcards

MLAP QUIZ Flashcards

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1
Q

What LD isoenzyme will be elevated in cases of pulmonary embolism?

a. LD4
b. LD3
c. LD2
d. LD1
e. LD5

A

LD3

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2
Q

This type of enzyme inhibitor that binds to the enzyme-substrate complex.

a. competitive
b. non-competitive
c. uncompetitive
d. multifocal

A

uncompetitive

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3
Q

This is the most physiologically active form of calcium.

a. complexed with anions
b. ionized
c. protein-bound
d. deionized

A

ionized

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4
Q

Increased cellular uptake of potassium would result to:

a. hyperkalemia
b. hypokalemia
c. dilutional effect
d. no effect

A

hypokalemia

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5
Q

Most commonly used electrode for blood pH determination:

a. glass
b. silver-silver chloride
c. calomel
d. severinghaus

A

glass

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6
Q

What is the expected serum levels of somatomedin C in adult patients with acromegaly?

a. normal to elevated
b. decreased to normal
c. elevated
d. normal
e. decreased

A

elevated

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7
Q

The principal estrogen secreted by the ovaries:

a. estriol
b. lactogen
c. estradiol
d. estrone

A

estradiol

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8
Q

Which among the following is NOT a function of cortisol?

a. neither
b. gluconeogenesis
c. either
d. promotes hyperglycemia

A

neither

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9
Q

What hormone stimulates the production of testosterone?

a. growth hormone
b. follicle stimulating hormone
c. gonadotropin releasing hormone
d. thyroid hormone
e. luteinizing hormone

A

luteinizing hormone

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10
Q

NOT TRUE regarding the positive feedback loop:

a. releasing factors and tropic hormones are released in elevated quantities
b. it is usually stimulated by decreased amount of circulating hormones
c. begins when the hypothalamus receives input to produce releasing factors
d. releasing factors act on the target organ to increase hormonal production

A

b. it is usually stimulated by decreased amount of circulating hormones

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11
Q

What is the similarity between epinephrine, norepinephrine, and cortisol?

a. elevates blood glucose levels
b. produced by the adrenal cortex
c. elevated in cases of a fight-or-flight response
d. increases the rate of mitochondrial ATP production

A

c. elevated in cases of a fight-or-flight response

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12
Q

Among the layers of the adrenal cortex, which of them produces androgens?

a. zona medulla
b. zona fasciculata
c. zona reticularis
d. the cortex does not have any layers
e. zona glomerulosa

A

zona reticularis

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13
Q

Hashimoto’s thyroiditis is usually associated with what other disorder?

a. AOTA
b. hypertriglyceridemia
c. hyperglycemia
d. hypercholesterolemia

A

AOTA

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14
Q

Subclinical thyroid disorders are conditions wherein there are no apparent signs and symptoms, but clinical findings are abnormal. In cases of subclinical hyperthyroidism, what thyroid hormone is abnormal?

a. T4
b. TSH
c. TRH
d. T3

A

TSH

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15
Q

Which among the following is secreted by the neurohypophysis?

a. cortisol
b. arginine vasopressin
c. TSH
d. FSH

A

arginine vasopressin

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16
Q

Hormone produced by the hypothalamus that is also known as the prolactin inhibiting factor:

a. procalcitonin
b. dopamine
c. somatostain
d. arginine vasopressin
e. oxytocin

A

dopamine

17
Q

Hormonal disorders where the defect is seen in the target gland

a. primary
b. tertiary
c. secondary
d. quaternary

A

b. primary

18
Q

This hormone stimulates the anterior pituitary gland to secrete TSH.

a. somatostatin
b. growth hormone
c. T3 and T4
d. TRH

A

TRH

19
Q

The most convenient test for patients suspected of having adrenal insufficiency.

a. saline suppression test
b. metyrapone test
c. ACTH stimulation test
d. basal hormone measurement
e. 12-hour urine free cortisol

A

a. saline suppression test
b. metyrapone test
c. ACTH stimulation test
e. 12-hour urine free cortisol

20
Q

Diagnosis of thyroid disorders are usually made by measuring which among the following analytes?

a. FT4
b. TSH
c. TRH
d. TSH and FT4
e. TSH and TRH

A

TSH and FT4

21
Q

To prevent over production of adrenal hormones, which among the following serves as a negative feedback inhibitor of the anterior pituitary gland?

a. dopamine
b. cortisol
c. androgen
d. epinephrine
e. aldosterone

A

dopamine

22
Q

Function of thyroid hormones include the following, EXCEPT:

a. growth
b. heat production
c. sexual maturity
d. metabolism
e. stress response

A

stress response

23
Q

Which among the following is INCORRECT regarding the water deprivation test?

a. patient is deprived of water overnight
b. desmopressin is administered every hour before the testing time
c. a baseline urine and serum osmolality is taken
d. none of the choices

A

b. desmopressin is administered every hour before the testing time

24
Q

The parafollicular cells of the thyroid gland secrete what hormone?

a. T3 only
b. calcitonin
c. procalcitonin
d. T4 only
e. T3 and T4

A

calcitonin and procalcitonin

25
Q

What is the function of the hormone somatostatin?

a. promotes TSH release
b. inhibits insulin
c. inhibits prolactin release
d. inhibits growth hormone
e. releases ACTH

A

c. inhibits growth hormone

26
Q

What is considered as the screening test for diabetes insipidus?

a. water deprivation test
b. serum ADH quantitation
c. desmopressin stimulation test
d. urine specific gravity

A

d. urine specific gravity

27
Q

Which of the following is NOT a screening test for Cushing’s syndrome?

a. late night salivary cortisol
b. midnight plasma cortisol
c. 24-hour urinary cortisol
d. overnight dexamethasone test

A

midnight plasma control

28
Q

Which among the following steroidal hormone is responsible for salt balance and regulation?

a. arginine vasopressin
b. mineralcorticoids
c. androgens
d. glucocorticoids

A

mineralocorticoids

29
Q

When is the best time to collect blood for ACTH quantitation?

a. morning
b. dusk
c. afternoon
d. midnight
e. evening

A

morning

30
Q

Which among the following is INCORRECT regarding the water deprivation test?

a. any of the choices
b. baseline urine and serum osmolality is taken
c. the patient is deprived of water overnight
d. desmopressin is administered every hour before the testing time

A

d. desmopressin is administered every hour before the testing time

31
Q

NOT a hormone produced by the hypothalamus.

a. corticotropin-releasing hormone
b. oxytocin
c. none of the choices
d. somatostatin

A

none of the choices

32
Q

If a technologist obtained inconclusive results in an acromegaly screening test, what is the next step to be taken?

a. repeat the screening test with another method
b. perform a confirmatory test
c. refer to attending pathologist
d. refer to the chief technologist

A

a. repeat the screening test with another method

33
Q

What is the expected aldosterone level in a healthy patient that underwent the Captopril test?

a. elevated
b. no effect
c. variable
d. decreased

A

a. elevated

34
Q

Which among the following best describes cosyntropin?

a. the urinary analyte of cortisol
b. a synthetic analog of ACTH
c. metabolite of ACTH
d. suppressor of 11-deoxycortisol activity

A

b. a synthetic analog of ACTH

clinical chemistry 2 (2 decks)

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