Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

PH 166 > Hormones > Flashcards

Hormones Flashcards

(48 cards)

Start Studying
1
Q

Which is false
A. Proteins have longer half-life than steroids
B. Steroids are bound to carrier protein
C. Steroids have cholesterol as precursor
D. Proteins have big size, that’s why they can’t enter the cell

A

A - shorter :)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q 
not an amino acid derivative
A. epinephrine
B. norepinephrine
C. thyroxine
D. estrogen
A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q 
among amino acid derivatives, which is a bound carrier?
A. epinephrine
B. norepinephrine
C. thyroxine
D. estrogen
A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

enumerate 3 main actions of hormones

A

growth and development
regulation of energy production, use and storage
homeostatic control of metabolic pathways

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which endocrine gland secretes melatonin? Indicate also what melatonin does
A.pineal gland
B.anterior pituitary gland
C.posterior pituitary gland

A

A. Melatonin maintains body’s circadian rhythm & timing + release of female reproductive hormones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which endocrine gland has hormone prod c/o CNS?
A.pineal gland
B.anterior pituitary gland
C.posterior pituitary gland

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which endocrine gland produces mostly peptides/glycoproteins for hormones?
A.pineal gland
B.anterior pituitary gland
C.posterior pituitary gland

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Differentiate positive feedback from negative feedback

A

Positive feedback: rate of process increases, product conc increases
Negative feedback: rate of process decreases, product conc increases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

False about prolactin
A. acts at the hypothalamus to inhibit GnRH secretion
B. major circulating form: nonglycosylated monomer
C. measured by immunometric assay
D. not affected by diurnal variations

A

D - highest levels attained during sleep & a nadir occurring bet 10AM and noon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

A. Levels of prolactin greater than 200 ng/mL signify: ___

B. enumerate 2 causes of prolactin deficiency

A

A. prolactinoma

B. pituitary necrosis / pseudohypoparathyroidism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

A.pre-dominating species of somatotropin

B.most useful form of somatotropin for GHD deficiency diagosis @

A

A.IGF-BP3
B.IGF-I
C.Stage 4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q 
How is somatotropin measured? (generally)
A.chemiluminescent immunoassay
B.insulin tolerance test
C.somatomedin C
D.glucose suppression test
A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q 
GH deficiency test gold standard
A.chemiluminescent immunoassay
B.insulin tolerance test
C.somatomedin C
D.glucose suppression test
A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q 
screening test for acromegaly
A.chemiluminescent immunoassay
B.insulin tolerance test
C.somatomedin C
D.glucose suppression test
A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q 
confirmatory test for acromegaly
A.chemiluminescent immunoassay
B.insulin tolerance test
C.somatomedin C
D.glucose suppression test
A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which is false?
A.Thyroid-stimulating hormones push for iodide uptake
B.Fasting serum is used in growth hormone tests
C.Specimen for adrenocorticotropic hormone are stored in polyethylene tubes

A

C - polystyrene dapat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

A.Which part of the posterior pituitary gland produces anti-diuretic hormone?
B.Which part of the posterior pituitary gland produces oxytocin?

A

A.supraoptic nuclei

B.paraventricular nuclei

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

A.Oxytocin stimulates contraction of the gravid uterus at term. What is this reflex called?
B.T/F Oxytocin scretion is inhibited by stressful situations

A

A.Fergusson reflex

B. T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q 
Does not inhibit release of ADH?
A.ethanol
B.cortisol
C.lithium
D.emetic
A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

A.diagnostic test for ADH abnormality

B.T/F posterior pituitary homrones are synthesized in the hypothalamus

Study These Flashcards
A

A.overnight water deprivation test

B.T

21
Q

Which is false?
A.T4 is a major fraction of organic iodine in circulation
B.Elevated thyroxine causes inhibition of TSH secretion
C.Increase in T3 plasma level is the first sign of hypothyroidism

Study These Flashcards
A

C - hyper dapat

22
Q

Which thyroid hormone binding protein is also known as transthyretin?
A.thyroxine-binding globulin
B.thyroxine-binding prealbumin
C.thyroxine-binding albumin

23
Q

Which thyroid hormone binding protein transports majority of thyroid hormones?
A.thyroxine-binding globulin
B.thyroxine-binding prealbumin
C.thyroxine-binding albumin

24
Q

Which thyroid hormone binding protein takes care of mostly T3?
A.thyroxine-binding globulin
B.thyroxine-binding prealbumin
C.thyroxine-binding albumin

25
A.Differentiate primary hyperthyroidism from secondary hyperthyroidism B. what is subclinical hyperthyroidism?
A.primary - elevated thyroid hormones, dec TSH secondary - increased TSH & T4 B.TSH low, T3 & T4 normal
26
Differentiate primary, secondary & tertiary hyporthyroidism
primary - deficiency of elemental iodine secondary - pituitary adenoma tertiary - hypothalamic disease
27
A. what is thyrotoxicosis? B. identify most common cause of thyrotoxicosis C. how is B diagnosed?
A. caused by high levels of free TH in circulation B. Grave's disease C. TSH Receptor antibody test
28
A.identify disease where thyroid is replaced by lymphoid tissue B.screening test result for congenital hypothyroidism C.confirmatory test result for congenital hypothyroidism
A. Hashimoto's disease B. dec T4 C. inc TSH
29
A.What does your thyrotropin releasing hormone stimulation test measure? B.T/F More TRH means hyperthyroidism. C.T/F TRH test = most impt thyroid func test
A.relationship bet TRH & TSH secretion B.F - hypo dapat C.F - TSH dapat
30
A.Radioactive Iodine Uptake measures ___ | B.Reference method for free T4 meas
A.ability of thyroid to trap iodine | B.equilibrium dialysis
31
Which is false? A.Decreased TSH does not happen in primary hypothyroidism B.Decreased amount of thyroid hormones happens in Graves' disease C.Decreased TSH happens in Hashimoto's disease
C -increase dapat
32
Which is false about parathyroid hormone (PTH)? A.As Ca levels increase, PTH secretion accelerates B.PTH prevents hypocalcemia C.PTH is produced by smallest endocrine gland in the body
A - dapat suppressed
33
False about primary hyperparathyroidism A.due to presence of PT adenoma B.accompanied by phosphaturia C.needs Ca supplementation to maintain Ca needs
C - this is for hypoparathyroidism. hypercalcemia ang problem @ primary hyperparathyroidism
34
Which is false? A.Renin-angiotensin system controls mineralocorticoids B.Zona reticularis is the site of mineralocorticoid synthesis C.Cortisol was synthesized in zona fasciculata D.Secretions of adrenal gland affect BP
B - zona reticularis is for androstenedione & dehydroepiandrosterone. mineralocorticoids @ zona glomerulosa
35
``` False about cortisol A.mostly bound to transcortin B.stimulates gluconeogenesis @ liver C.blood sample not affected by diurnal variation D.metabolites are present @ urine ```
C - Urine ang di apektado, kaya urine ang the best. Blood sample must be collected @ 8AM
36
A. Identify disease: due to autoimmune adrenalitis TB, hemorrhage, HIV. this disease leads to primary adrenal insufficiency B. screening test for primary adrenal insufficiency
A. Addison's disease | B. ACTH stimulation test
37
A.most common form of congenital adrenal hyperplasia | B.definitive diagnosis for primary adrenal insufficiency
A.21-hydroxylase deficiency | B.impaired response to ACTH
38
False about aldosterone A.main determinant of renal excretion of potassium B.most potent glucocorticoid C.controlled by RAS
B - mineralocorticoid dapat
39
A.What does aldosterone need for synthesis? B.Primary hyperaldosteronism is also called __ C. diagnostic test for hypoaldosteronism
A.18-hydroxysterol dehydrogenase B.Conn's disease C.furosemide stimulation test
40
A.screening test for primary hyperaldosteronism B.confirmatory test for secondary hyperaldosteronism C.positive result for both
A.plasma aldosterone/renin activity B.saline suppression test C.> 5 ng/dL aldosterone
41
A.precursor of catecholamines B.highest conc of norepinephrine is in __ C.major metabolite of norepinephrine in CSF & urine
A.L-tyrosine B.CNS C.3-methoxy-4-hydroxyphenylglycol
42
``` false about epinephrine A.most abundant medullary hormone B.decreases glucose concentration C.major metabolite is vanillymandelic acid D.produced from norepinephrine ```
B - increase dapat
43
``` false about pheochromocytoma A. tumors of adrenal medulla B. commonly seen in children C. due to overprod of catecholamines D. classic spells include tachycardia and sweating ```
B - 30s and 50s dapat
44
false about neuroblastoma A. decreased production of norepinephrine B. commonly seen in children C. positive - high urinary excretion of vanillymandelic acid
A | increased dapat
45
A. screening test for pheochromocytoma B. diagnostic test for pheochromocytoma C. @ radioimmunoassay, identify amount range that is indicative of pheochromocytoma
A. high plasma metanephrines & normetanephrines c/o HPLC B. high 24h urinary excretion of metanephrines & normetanephrines C. > 2000 pg/mL
46
false about receptor-based assays A. greater sensitivity than both bioassays and immunoassays B. reflect biological function of the hormone, pero in-vitro C. simple to perform
A - less sensitive than immunoassays
47
enumerate 4 ways on how to measure hormone levels
bioassay receptor-based assay immunoassay instrumental
48
3 instrumental techniques used to measure hormone levels: enumerate
matrix-assisted laser ionization electrolyte ionization gas chromatograhy-mass spectrometry

PH 166 (28 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions