Endocrine Test 1
Terms in this set (25)
Types of hormones?
Modified tyrosine aa's
Protein hormone examples
Steroid hormone examples
Modified tyrosine aa hormones
What are the steps to making a protein hormone?
DNA gene tells mRNA or rRNA to make it.
Hormone--> Stored in large amounts in secretory granules--> Signal says its needed--> Exocytosis
What type of hormones does the anterior pituitary produce? Name them.
1. Growth hormone (GH)
2. Adrenocorticotropin (ACTH)
3. Thyrotropin/ Thyroid Stimulating Hormone (TSH)
4. Luteinizing hormone (LH)
5. Follicle Stimulating Hormone (FSH)
Growth Hormone (GH)/ Somatotropin
Stimulates growth and metabolism
Stimulated by: GHRH
Inhibited by: Somatostatin
Causes cortisol secretion from adrenal cortex
Cortisol is released in response to ______ and _____ via stimulation of ______ hormone.
In response to stress and low blood-glucose
via Adrenocorticotropin hormone (ACTH)
Thyroid Stimulating Hormone
Stimulates thyroid hormone secretion from the thyroid
Luteinizing Hormone (LH)
(M) Testosterone secretion
(F) Ovulation and luteal function
Follicle Stimulating Hormone (FSH)
Regulates follicular growth
Stimulates mammary development and function
What hormones are secreted (made in the hypothalamus) by the Posterior Pituitary?
1. Anti-diuretic hormone (ADH)/ Vasopressin
Expulsion of fetus
Regulation of corpus luteum
A place in blood vessels where the Hypothalamic-Hypophyseal Portal system originates.
It's where the neurons from the hypothalamus release their inhibiting and releasing hormones into the portal system to go to the anterior pituitary.
The portal system lies between 2 capillary beds.
Examples of hormones delivered from hypothalamus--> anterior pituitary via the portal system
1. Corticotropin Releasing Hormone (CRH)
3. Gonadotropin Releasing Hormone (GnRH)
Somatostatin is a hormone that inhibits another hormone called ____.
Gonadotropin Releasing Hormone (GnRH)
Stimulates FSH and LH release
Dopamine inhibits the release of ___.
GH can also be called _____.
Mostly anabolic (builds up)
Can have catabolic effects
Stimulates growth and regulates metabolism
Stimulated by GHRH
Inhibited by Somatostatin
Growth Hormone levels increase in response to --?
Energy deficient states
- Low energy states (sleep)
Dogs: Usually associated with progesterone excess
Cats: associated with GH-secreting pituitary tumor
Bone and soft tissue over growth and Insulin resistance
Signs: Poorly-regulated diabetes, wide interdental spaces, large tongue, organomegaly
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