Patho Exam 4 Thyroid Disease
- 1.The appearance of cells in an active thyroid include....
- A.
Large follicles and cuboidal lining
- B.
Small follicles and cuboidal lining
- C.
Small follicles and flat lining
- D.
Large follicles and flat lining
- 2.The thyroid has one of the lowest rates of blood flow per gram of tissue of any organ.
- A.
True
- B.
False
- 3.Thyroid follicular cells collect and transport what to the colloid?
- A.
Iodide
- B.
T4
- C.
Iodine
- D.
T3
- 4.T4 is composed of what types of molecules coupled together?
- A.
Two di-iodotyrosine
- B.
4 mono-iodotyrosine
- C.
One di-iodotyrosine and one mono-iodotyrosine
- D.
I have no idea.
- 5.T3 and T4 are synthesized in the colloid by a process called
- 6.The approximate half-life of T4 and T3 respectively are
- A.
30 hours and 6-7 days
- B.
8 hours and 2 days
- C.
6-7 days and 30 hours
- D.
2 days and 8 hours
- 7.Thyroid-stimulating hormone is secreted by
- A.
Anterior pituitary
- B.
Posterior pituitary
- C.
Hypothalamus
- D.
Thyroid gland
- 8.TSH secretion is
- A.
Enhanced by stress
- B.
Inhibited by stress
- 9.An abnormal enlargement of the thyroid gland is known as
- 10.Normal TSH secretion exhibits a circardian pattern. When does TSH secretion typically peak?
- A.
Before PA school finals
- B.
Afternoon and evening
- C.
During the day
- D.
After midnight
- 11.T3 induces increased production of what type of receptors?
- A.
Beta-adrenergic
- B.
G-protein coupled receptors
- C.
Membrane receptors
- 12.TSH receptor autoantibody (TSH-R Ab) is
- A.
Antagonist
- B.
Agonist
- 13.Germ cell tumors are a less common cause of hyperthyroidism. These types of tumors contain small quantities of hCG.
- A.
True
- B.
False
- 14.Trasient hyperthyroid preceds the development of
- A.
Fulminant hyperthyroidism
- B.
Cytokine storm
- C.
Hypothyroidism
- D.
Death
- 15.Patients with Graves disesea typically suffer from what other types of disorders?
- A.
Autoimmune
- B.
Metabolic
- C.
Hematologic
- D.
Cancer
- 16.One possible mechanism for Graves disease/hyperthyroidism is an immune response against a viral antigen that shares homology with the TSH receptors. The term for this situation would be
- 17.Patients with hyperthryoidism show an increase in osteoblastic and osteoclastic activity.
- A.
True
- B.
False
- 18.In men with hyperthyroidism mean sperm counts are..
- A.
Undetectable
- B.
Normal
- C.
Normal but with increased motility
- D.
Normal but with decreased motility
- 19.The most common cause of hypothryoidism is
- A.
Hashimotos thyroiditis
- B.
Graves Disease
- C.
Thyroid storm
- D.
Abnormal iodine metabolism
- 20.What test is the most sensitive for early hypothyroidism?
- A.
Serum LH
- B.
Serum TSH
- C.
Serum FSH
- D.
Serum TH
Questions: 20 | Attempts: 2321 | Last updated: Nov 6, 2018
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Sample QuestionA 60-year-old woman presents with complaints of feeling nervous, moody, weak, and tired. On exam, she has hand tremors and a rapid heartbeat. Pulse 120/min. BP 110/78. She has been taking levothyroxine for hypothyroidism, and you suspect that she is taking more tablets than you prescribed. Which of the following sets of laboratory results is most consistent with her clinical presentation? A B C D E TSH Elevated Normal Elevated Normal Decreased T4 Elevated Elevated Decreased Decreased Elevated T3 Elevated Decreased Decreased Decreased Elevated
Questions: 29 | Attempts: 1805 | Last updated: Jun 21, 2017
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Sample QuestionT3 and T4 are similar, but different produced in equal amounts?
Questions: 22 | Attempts: 1113 | Last updated: Feb 13, 2013
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Sample QuestionThyroid hormones can increase cardiac output. From the following table, pick the row that correctly lists the mechanisms by which T3 increases cardiac output.
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