Thyroid dysfunction-Mallicote

Question 1

Thyroid hormone concentrations regulated by

Answer 1

Hypothalamus

Pituitary gland

Question 2

Thyroid releasing hormone released from

Answer 2

hypothalamus

-in response to dec free T4 levels

Question 3

TRH stimulates

Answer 3

Pituitary gland

-release thyroid-stimulating hormone

Question 4

TSH stimulates release

Answer 4

Both T3 and T4 from thyroid

Question 5

adult acquired hypothyroidism

Answer 5

Doesn’t exist

Question 6

Thyroid function testing

Answer 6

Admin TRH or TSH

Question 7

Congenital Neonatal Hypothyroidism in Foals

Answer 7

1. Goiter

2. Hyperplasia

Question 8

Goiter in foals

Answer 8

Mares consume too much/too little iodine

Question 9

Hyperplasia in foals

Answer 9

1. Western US and Canada

2. Et: excessive nitrates in feed?!?!

Question 10

Adenoma

Answer 10

Only a problem if interferes with eating/breathing

Question 11

Hyperthyroidism

Answer 11

Extremely rare in horses

Neoplasia may be cause

Question 12

Euthryoid sick syndrome

Answer 12

Changes in thyroid function with systemic dz

-decrease metabolic rate to preserve body mass