Which hormones that are released from the hypothalamus are inhibitory?
Which hormone is released from the hypothalamus, stimulates somatotropes in the ant. pituitary to release Growth Hormone (GH)?
Growth Hormone Releasing Hormone
Which hormone shuts off Growth Hormone release from ant. pituitary?
Which hormone is released from the hypothalamus, stimulates the ant. pituitary to produce ACTH?
Corticotropin Releasing Hormone
What hormone is released from the anterior pituitary in response to CRH and stimulates the adrenal cortex to produce glucocorticoids and mineralocorticoids?
An excess production of ACTH from the pituitary due to neoplasia characterizes what disease?
Hyperadrenocorticism, Cushing's Disease
Inefficient production of cortisol from an adrenal gland that is not responsive to ACTH characterizes what disease?
Hypoadrenocorticism, Addison's Disease
What hormone levels would you expect to see in a Cushnoid patient?
High ACTH, High Cortisol
What hormone levels would you expect to see in an Addisonian patient?
High ACTH, Low Cortisol
How would we test for Cushing's Disease?
ACTH Stimulation tests: measure cortisol levels before giving a dose of ACTH analogues and measure cortisol levels 1 hour after dose. Cushnoid dogs have high cortisol levels before and extremely high cortisol levels after.
What is Cosyntropin used for?
In ACTH stimulation tests
Which hormone is released from the hypothalamus and stimulates thyrotropes in the anterior pituitary to make TSH?
Thyrotropin Releasing Hormone
Which hormone is released from the anterior pituitary in response to TRH and stimulates the Thyroid gland to release T3/T4?
Thyroid Stimulating Hormone
How would you test for Hyperthyroidism?
Test for T4 concentration in the blood (easier than testing for T3)
What hormone levels would you see in a patient with hyperthyroidism?
Low TRH, low TSH, and high T4 (disease is usually in the thyroid gland)
What hormone levels would you see in a patient with hypothyroidism?
High TRH, High TSH, Low T4
What hormone is released by the hypothalamus and stimulates the anterior pituitary to release LH and FSH?
Gonadotropin Releasing Hormone (both males and females)
What hormones does the posterior pituitary release?
Oxytocin and vasopressin
What hormone acts primarily on the liver to stimulate production of somatomedins/Insulin-like Growth Factors (IGFs) which cause growth by impacting bone, muscle, and various organs?