Thyroid Flashcards
How many thyroid arteries are there?
A) 2
B) 3
C) 4
D) 5
C - two superior and two inferior
What branch of the thyroid arterial supply branches off the Rt subclavian artery?
A) Inferior thyroid artery
B) Thyrocervical trunk
C) Superior thyroid artery
D) Thyroid IMA
B
The superior thyroid arteries branch off what?
A) Thyrocervical trunk
B) ECA
C) Brachiocephalic
D) Subclavian
B
The inferior thyroid arteries branch off what?
A) ECA
B) Rt subclavian
C) Thyrocervical trunk
D) ICA
C
How many PAIRS of veins drain the thyroid?
A) 1
B) 2
C) 3
D) 4
C - superior, middle, and inferior
Which thyroid veins drain into the IJV?
A) Superior
B) Middle
C) Inferior
D) Both A and B
E) None of the above
D
Which thyroid veins drain into the BCV?
A) Superior
B) Middle
C) Inferior
D) Both A and B
E) None of the above
C
Does calcitonin work to increase or decrease blood calcium?
LOWERS - inhibits calcium release from bones
What is the regulatory system NOT comprised of?
A) Hypothalamus
B) Anterior pituitary
C) Posterior pituitary
D) Thyroid
C
What is TRH secreted from?
A) Hypothalamus
B) Anterior pituitary
C) Posterior pituitary
D) Thyroid
A
What is TSH/thyrotropin released from?
A) Hypothalamus
B) Anterior pituitary
C) Posterior pituitary
D) Thyroid
B
What releases T3 and T4?
A) Hypothalamus
B) Anterior pituitary
C) Parathyroid
D) Thyroid
D
What hormone is released when there is an INCREASE in blood calcium?
A) TSH
B) Calcitonin
C) PTH
D) T3 and T4
B - lowers blood calcium
What hormone is released when there is a DECREASE in blood calcium?
A) TSH
B) Calcitonin
C) PTH
D) T3 and T4
C - PTH works to increase blood calcium and works on the bones, kidneys, and intestines
Which hormone is NOT released by the thyroid?
A) T3
B) T4
C) Calcitonin
D) TSH
D
Hashimoto’s will present with which combination?
A) Increased selenium and decreased iodine intake
B) Decreased selenium and increased iodine intake
C) Decreased selenium and decreased iodine intake
D) Increased selenium and increased iodine intake
B
Non toxic goiters contain what levels?
A) Increased iodine, increased T3&T4, decreased TSH
B) Increased iodine, increased T3&T4, increased TSH
C) Decreased iodine, decreased T3&T4, increased TSH
D) Decreased iodine, decreased T3&T4, decreased TSH
C
What is the classic feature of postpartum thyroiditis?
A) Thyrotoxicosis followed by hyperthyroidism
B) Thyrotoxicosis followed by hypothyroidism
C) Graves disease
D) Hashimotos
B
Which statement is false:
A) Hot nodules are hyperfunctioning
B) Cold nodules are non-functioning
C) Hot nodules have ability to become malignant
D) Most nodules in the thyroid are cold
C - hot nodules imply benignity
With follicular CA of the thyroid, where will mets NOT spread?
A) Bone
B) Spleen
C) Liver
D) Lungs
B
Which thyroid cancer is associated with an increased serum calcium marker?
A) Follicular
B) Medullary
C) Papillary
D) Tubular
B
Which of the following CA is the most aggresive?
A) Medullary
B) Follicular
C) Papillary
D) Anaplastic
D
Which CA contains thyroglobulin producing cells?
A) Papillary
B) Hurthle cell
C) Anaplastic
D) Medullary
B
70 year old female presents with a history of Hashimotos. What is the most likely CA?
A) Hurthle cell
B) Lymphoma
C) Anaplastic
D) Medullary
B - large, solid, hypoechoic mass
Which thryoid CA is more prevalent in males?
A) Hurthle cell
B) Lymphoma
C) Anaplastic
D) Medullary
A
Thyroid FNA lacks specificity for all of the following EXCEPT:
A) Follicular
B) Hurthle cell
C) Medullary
D) Lymphoma
C
