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Thyroid and Parathyroid
For diagnostic medical sonography students. Only study term first, then definition. More of a Q&A than term/definition.
44
Medical
Undergraduate 4
02/24/2009

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Term
Most abundant hormone secreted by the thyroid.
Definition
thyroxine (T4)
Term
Most potent hormone secreted by the thyroid.
Definition
Thriiodothyronine (T3)
Term
Duct formed by migration of the thyroid during embryogenesis.
Definition
thyroglossal
Term
The thyroglossal duct connects what two organs in the fetus?
Definition
tongue and thyroid
Term
What is the first endocrine organ to develop in the fetus?
Definition
thyroid (at 7 weeks)
Term
The thyroid is enlarged when the AP diameter is greater than:
Definition
2 cm
Term
What are muscles make up the strap muscle?
Definition
sternothyroid, sternohyoid, omohyoid
Term
Muscle adjacent to the trachea and posterior to the CCA.
Definition
longus colli
Term
Produced by anterior pituitary gland, to signal release of thyroid hormones
when needed.
Definition
thyroid stimulating hormone (TSH)
Term
Regulated by thyrotropin releasing
factor produced by the hypothalamus.
Definition
TSH
Term
Controls thyrotropin-releasing factor.
Definition
basal metabolic rate
Term
Decreases calcium in blood by inhibiting bone breakdown.
Definition
calcitonin
Term
In infants, absence of thyroxine T4 affects:
Definition
intelligence and physical growth
Term
Cause of hyperthyroidism.
Definition
increased thyroxine secretion
Term
For normal quantities of thyroxine to be produced, ________ mg of iodine must be ingested per week.
Definition
100-200
Term
Most common thyroid abnormality.
Definition
goiter
Term
Difference between toxic and non-toxic goiter.
Definition
Toxic goiters have excessive production of thyroid hormones, while non-toxic have no thyroid hormonal changes.
Term
Diffuse enlargement of thyroid and uniformly enlarged; not arising from neoplasm or infections.
Definition
non-toxic simple goiter
Term
Most common thyroid malignancy.
Definition
papillary carcinoma
Term
Most common thyroid cancer in children.
Definition
papillary carcinoma
Term
Slow growing but more aggressive than
papillary carcinoma.
Definition
Follicular adenocarcinoma
Term
Carcinoma with increased calcitonin levels, related to familial syndrome.
Definition
medullary
Term
MEN stands for:
Definition
multiple endocrine neoplasia
Term
Pheochromocytoma with medullary
carcinoma of the thyroid.
Definition
sipple syndrome
Term
Disease of the elderly, one of the most lethal solid tumors.
Definition
anaplastic thyroid carcinoma
Term
Worst prognosis of thyroid cancers.
Definition
anaplastic thyroid carcinoma
Term
70-80% of patients with lymphoma have:
Definition
lymphocytic thyroiditis (Hashimoto hypothyroidism)
Term
Metastasis to the thyroid is most common from:
Definition
melanoma, breast, renal cell
Term
Most effective methodfor diagnosis of metastasis.
Definition
fine needle aspiration
Term
Most common cause of thyroid disorders world wide.
Definition
iodine deficiency
Term
Hyperfunctioning nodule absorbs a lot of radionuclide are “hot” usually:
Definition
benign
Term
Inflammation of the thyroid probably caused by a viral infection.
Definition
de Quervain's thyroiditis
Term
Autoimmune relaed disease with increased levels of LATS.
Definition
Grave's disease
Term
Most common cause of hypothyroidism.
Definition
Hashimoto's thyroiditis
Term
What provides a diagnosis for Hashimoto's thyroiditis?
Definition
antithyroid antibodies
Term
Uncommon inflammation secondary to bacterial infection.
Definition
acute suppurative thyroiditis
Term
Maintains proper levels of calcium ion in the blood.
Definition
Parathyroid hormone
Term
Elevated levels of PTH.
Definition
hyperparathyroidism
Term
Diffuse enlargement of the parathyroid.
Definition
parathyroid hyperplasia
Term
What differentiates adenoma from parathyroid hyperplasia?
Definition
number involved
Term
Congenital anomaly found in the middle of the neck anterior to the trachea - any age group.
Definition
thyroglossal duct cyst
Term
Cystic mass seen lateral in the neck near carotid.
Definition
branchial cleft cyst
Term
Congenital lymphatic malformation commonly found posterior to the neck.
Definition
cystic hygroma
Term
Most common form of lymphangioma.
Definition
cystic hygroma
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