Thyroid and Intro to Endocrinology Quiz
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Minimum daily requirement of Iodine in the diet
A. 75 mcg
B. 15 mg
C. 15 mcg
D. 15 g
They are water insoluble (hydrophobic) and circulate bound to a carrier protein
A. Steroids
B. Amines
C. Peptides and Proteins
D. None of the above
Are lipid molecules that have cholesterol as a common precursor
A. Steroids
B. Amines
C. Peptides and Proteins
Which of the following inactivates thyroid hormone?
A. D1
B. D2
C. D3
D. D4
Secreted in one location and release into blood circulation; binds to specific receptor to elicit physiological response
A. Endocrine
B. Paracrine
C. Exocrine
D. Juxtacrine
Amount of T4 the thyroid secrete per day
A. 80 mg
B. 80 mcg
C. 5 mg
D. 5 mcg
Transthyretin is also called as
A. Pre Albumin
B. Thyroxine binding globulin
C. Albumin
D. Ceruloplasmin
Screening test for growth hormone deficiency
A. Physical activity test/Exercise
B. Insulin Tolerance Test
C. Arginine stimulation test
D. 24 hour serum GH levels
A system in which an increased in the product decreases the activity of the system and the production rate
A. Positive Feedback Mechanism
B. Negative Feedback Mechanism
Secreted in the neurons and released into extracellular space; binds to receptor in nearby cell and affects its function.
A. Neuroendocrine
B. Endocrine
C. Exocrine
D. Neurocrine
Gold standard for diagnosing Growth Hormone deficiency
A. Insulin Tolerance Test
B. Arginine Stimulation Test
C. Physical Activity Test
D. 75 g OGTT
Synthesized and stored within the cell in the form of secretory granules and are cleaved as needed
A. Peptides and Proteins
B. Amines
C. Steroids
D. None of the above
Which of the following produces Calcitonin?
A. Parafollicular cells
B. Colloid
C. Parathyroid gland
D. Pendrin
The major constituent of colloid is the large glycoprotein called ________
A. Thyroglobulin
B. Albumin
C. Thyroxine binding globulin
D. Thyrpoeroxidase
Lack of thyroid hormone during development results in short stature and mental deficits
A. Cretinism
B. Hashimoto’s thyroiditis
C. Thyroid Storm
D. Acromegaly
Major stimulus of growth hormone secretion
A. Sleep
B. Somatostatin
C. Fasting and High protein diet
D. Levodopa
Process wherein tyrosine residues are iodinated by iodine
A. Organification
B. Iodide trapping
C. Deiodinization
D. Iodinizarion
Peripheral monodeiodination of T4 produces how much additional T3?
A. 25 mg
B. 25 mcg
C. 15 mg
D. 5 mcg
Confirmatory test for Acromegaly
A. Glucose Suppression Test
B. Arginine Stimulation Test
C. Insulin Tolerance Test
D. Serum IGF 1 levels
Decreased thyroid secretion greatly increases the plasma levels of cholesterol, phospholipids, and triglycerides
A. TRUE
B. FALSE
Increased thyroid hormone decreases the levels of cholesterol, phospholipids, and triglycerides in the plasma, and increases the free fatty acids
A. TRUE
B. FALSE
Conversion of T4 to T3 takes mainly in the liver and _____
A. Kidneys
B. Placenta
C. Peripheral adipose tissues
D. Gastrointestinal lining
Secreted in endocrine cells and remains in relation to plasma membrane; acts on immediately adjacent cell by direct cell-to-cell contact
A. Juxtacrine
B. Endocrine
C. Paracrine
D. Exocrine
A system in which an increased in the product also increased the activity of the system and the production rate
A. Positive Feedback Mechanism
B. Negative Feedback Mechanism
The basal membrane of the thyroid cell has the specific ability to pump the iodide actively to the interior of the cell
A. Iodide trapping
B. Iodine trapping
C. Iodinization
D. Deiodinization
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