You see a patient with a goiter. You run some tests and find the ...

[shenderson6]

You see a patient with a goiter. You run some tests and find the patient is iodine deficient. Explain how iodine is used in the production of thyroid hormones. Also, explain how a goiter might form as a result of iodine deficiency. Be sure to include the role of TSH in your response.

Question 2

During lipolysis,
 A) triglycerides are converted into molecules of acetyl-CoA.
  B) triglycerides are broken down into glycerol and fatty acids.
  C) lipids are converted into glucose molecules.
  D) lipids are formed from excess carbohydrates.
  E) lipids are metabolized to yield ATP.

[itsakadoozi]

Answer to Question 1

Iodine atoms are attached to tyrosine molecules. Tyrosine molecules join together forming thyroid hormones as triiodothyronine (with 3 iodine atoms) or thyroxine (with 4 iodine atoms). If the patient is iodine deficient then he cannot produce adequate levels of thyroid hormones and negative feedback to the anterior pituitary does not occur. When the body is deficient in thyroid hormone the anterior pituitary will produce excess TSH trying to stimulate the thyroid gland. Excess TSH will cause the gland to hypertrophy and form a goiter.

Answer to Question 2

B

[shenderson6]

Thank you!

[itsakadoozi]

Always glad to help...