Thyroid and Intro to Endocrinology Quiz
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Process wherein tyrosine residues are iodinated by iodine
A. Organification
B. Iodide trapping
C. Deiodinization
D. Iodinizarion
Which of the following inactivates thyroid hormone?
A. D1
B. D2
C. D3
D. D4
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
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
Increased thyroid hormone decreases the levels of cholesterol, phospholipids, and triglycerides in the plasma, and increases the free fatty acids
A. TRUE
B. FALSE
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
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
Lack of thyroid hormone during development results in short stature and mental deficits
A. Cretinism
B. Hashimoto’s thyroiditis
C. Thyroid Storm
D. Acromegaly
Transthyretin is also called as
A. Pre Albumin
B. Thyroxine binding globulin
C. Albumin
D. Ceruloplasmin
Peripheral monodeiodination of T4 produces how much additional T3?
A. 25 mg
B. 25 mcg
C. 15 mg
D. 5 mcg
Gold standard for diagnosing Growth Hormone deficiency
A. Insulin Tolerance Test
B. Arginine Stimulation Test
C. Physical Activity Test
D. 75 g OGTT
Conversion of T4 to T3 takes mainly in the liver and _____
A. Kidneys
B. Placenta
C. Peripheral adipose tissues
D. Gastrointestinal lining
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
The major constituent of colloid is the large glycoprotein called ________
A. Thyroglobulin
B. Albumin
C. Thyroxine binding globulin
D. Thyrpoeroxidase
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