MMSC 436 Extra Questions and
Answers Final Exam
Which of the following would be elevated in the blood in medullary
carcinoma of the thyroid?
A. Calcitonin
B. Thyroxine
C. Catecholamines
D. Secretin -
correct answer ✅A. Calcitonin
What is the predominant form of thyroid hormone in the
circulation?
A. Thyroxine
B. Triiodothyronine
C. Diiodotyrosine
D. Monoiodotyrosine -
correct answer ✅A. Thyroxine
Once synthesized, the thyroid hormones are stored as a component
of thyroglobulin in what area of the thyroid gland?
A. Epithelial cell wall of the follicle
B. Colloid in the follicle
,MMSC 436 Extra Questions and
Answers Final Exam
C. Isthmus of the thyroid gland
D. Extracellular space of the thyroid
gland -
correct answer ✅B. Colloid in the follicle
How is the majority of reverse T3 (rT3) made?
A. Peripheral deiodination of T4
B. Peripheral deiodination of T3
C. From T3 in the thyroid gland
D. Fromthyroglobulininthethyroid
gland -
correct answer ✅A. Peripheral deiodination of T4
Which of the following is an auto antibody that binds to TSH
receptor sites on thyroid cell membranes, preventing thyroid-
stimulating hormone from binding?
A. Antithyroglobulin antibodies
B. Thyroid antimicrosomal antibodies
C. Thyrotropin receptor antibodies
, MMSC 436 Extra Questions and
Answers Final Exam
D. Antithyroid peroxidase antibodies -
correct answer ✅C. Thyrotropin receptor antibodies
In a patient with suspected primary hyperthyroidism associated
with Graves disease, one would expect the following laboratory
serum results: free thyroxine (FT4) ,thyroidhormone
binding ratio (THBR) and thyroid stimulating hormone (TSH)
A. Increased, decreased, increased
B. Increased, decreased, decreased
C. Increased, increased, decreased
D. Decreased,decreased,increased -
correct answer ✅C. Increased, increased, decreased
In a patient suspected of having primary myxedema, one would
expect the following serum results: free thyroxine (FT4) , thyroid
hormone
binding ratio (THBR) and tyroid stimulating hormone (TSH)
A. Decreased, increased, decreased
B. Increased, increased, decreased
C. Decreased, decreased, increased
Answers Final Exam
Which of the following would be elevated in the blood in medullary
carcinoma of the thyroid?
A. Calcitonin
B. Thyroxine
C. Catecholamines
D. Secretin -
correct answer ✅A. Calcitonin
What is the predominant form of thyroid hormone in the
circulation?
A. Thyroxine
B. Triiodothyronine
C. Diiodotyrosine
D. Monoiodotyrosine -
correct answer ✅A. Thyroxine
Once synthesized, the thyroid hormones are stored as a component
of thyroglobulin in what area of the thyroid gland?
A. Epithelial cell wall of the follicle
B. Colloid in the follicle
,MMSC 436 Extra Questions and
Answers Final Exam
C. Isthmus of the thyroid gland
D. Extracellular space of the thyroid
gland -
correct answer ✅B. Colloid in the follicle
How is the majority of reverse T3 (rT3) made?
A. Peripheral deiodination of T4
B. Peripheral deiodination of T3
C. From T3 in the thyroid gland
D. Fromthyroglobulininthethyroid
gland -
correct answer ✅A. Peripheral deiodination of T4
Which of the following is an auto antibody that binds to TSH
receptor sites on thyroid cell membranes, preventing thyroid-
stimulating hormone from binding?
A. Antithyroglobulin antibodies
B. Thyroid antimicrosomal antibodies
C. Thyrotropin receptor antibodies
, MMSC 436 Extra Questions and
Answers Final Exam
D. Antithyroid peroxidase antibodies -
correct answer ✅C. Thyrotropin receptor antibodies
In a patient with suspected primary hyperthyroidism associated
with Graves disease, one would expect the following laboratory
serum results: free thyroxine (FT4) ,thyroidhormone
binding ratio (THBR) and thyroid stimulating hormone (TSH)
A. Increased, decreased, increased
B. Increased, decreased, decreased
C. Increased, increased, decreased
D. Decreased,decreased,increased -
correct answer ✅C. Increased, increased, decreased
In a patient suspected of having primary myxedema, one would
expect the following serum results: free thyroxine (FT4) , thyroid
hormone
binding ratio (THBR) and tyroid stimulating hormone (TSH)
A. Decreased, increased, decreased
B. Increased, increased, decreased
C. Decreased, decreased, increased
