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Patho Exam 2 Endocrine
Johns Lectures on Endocrine Anatomy, Pathology, and Diabetes
39
Pathology
Graduate
10/23/2013

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Term
Lipid-soluble hormones
Definition
Steroids and fatty acid derivatives
Term
Water-soluble hormones
Definition
Protein/Peptide and amine/amino acid
Term
Vesicular hormones
Definition
protein/peptide; stored in vesicles, must be stimulated for release
Term
Avesicular hormones
Definition
steroids; synthesized in the smooth ER released directly into the ECF
Term
Functions of Hormones
Definition
Hormones like to play GAMeS:
Growth/development
Adaptation
Metabolism/nutrition
Sex (function and development)

Hormones don't initiate events, they modulate stimulus response
Term
This(ese) structural category(ies) of hormones include epinephrine
Definition
amines and amino acids
Term
This(ese) structural category(ies) of hormones consist of the smallest known hormones
Definition
amines and amino acids
Term
This(ese) structural category(ies) of hormones consist of the largest known hormones
Definition
(poly)peptides and (glyco)proteins
Term
This(ese) structural category(ies) of hormones include HcG and ACTH
Definition
(poly)peptides and (glyco)proteins
Term
This(ese) structural category(ies) of hormones include the sex hormones
Definition
steroids and fatty acid derivatives
Term
True or False: each hormone targets a specific receptor on a specific tissue, and that receptor responds exclusively to that hormone.
Definition
all the FALSE are belong to this. Hormones bind many (similar) receptors on many different tissues, and many receptors bind several (similar) hormones
Term
2 examples of negative feedback
Definition
ADH kills the process of its own stimulation in the hypothalamus, as well as its production in the posterior pituitary

Insulin its own production in beta cells in the pancreas
Term
example of positive feedback
Definition
the follicle releases estradiol which stimulates the release of FSH from the anterior pituitary, which stimulates follicular growth, and therefore estradiol release until such time as the egg is released from the follicle, destroying its ability to produce estradiol (corpus luteum)
Term
Hormone levels are regulated by...
Definition
...positive feedback, negative feedback, and STIMULUS LEVEL (generally the level of regulated substance in the body; e.g. insulin goes up as glucose goes up, etc.)
Term
Effect a LOWERED AFFINITY of a receptor for a hormone will have on response to stimulus
Definition
lowered affinity--> less frequent binding of hormone to receptor--> lower levels of second messenger--> weaker response
Term
Effect an INCREASED PRODUCTION of a receptor will have on response to stimulus
Definition
increased receptor production--> more places for hormone to bind--> more efficient binding of hormone--> more frequent second messenger activation--> stronger response
Term
Whilst researching an alien document, a translation for a previously unknown hormone comes out, "Porfentin-releasing hormone." Even though we don't know what porfentin is, what can we assume is the origin of this hormone in the alien body?
Definition
The equivalent of the hypothalamus
Term
These are the six hormones released by the hypothalamus
Definition
Your hypothalamus can cause a GaGeD CyST:
GnRH
GHRH
Dopamine
Corticotropin Releasing Hormone (CRH)
Somatostatin
Thyrotropin Releasing Hormone(TRH)
Term
Hormones of the posterior pituitary
Definition
ADH, and oxytocin (for holding your water, and breaking it)
Term
Hormones of the anterior pituitary
Definition
w/o your APG, you'd be a FLAT PiG:
FSH (stimulate follicles)
LH (stimulate testes)
ACTH (glucocorticoid regulation)
TSH (thyroid stimulation)
Prolactin (milk production/breast growth)
GH
Term
Anterior Pituitary Cell Types
Definition
In terms of the hormones: FLAT PiG
FSH/LH: gonad stimulation--> Gonadotrophs (also includes hCG)
ACTH: adrenoCORTICOTROPic hormone--> Corticotrophs
TSH: THYROid--> thyrotrophs
Prolactin: proLACTin--> lactotrophs
GH: aka "Somatotropin"--> somatotrophs
Term
Symptoms of hypopituitarism
Definition
We CAUSe hypopituitarism:
Weakness
Cold intolerance
Appetite loss
Unfitness (chronic)
Sexual dysfunction
Term
GH disorders in Children
Definition
deficiency: bone growth interference--> dwarfism
excess: increased linear bone growth--> gigantism
Term
GH disorders in Adults
Definition
excess: acromegaly, increased growth of cartilage & viscera (goiter, visceromegaly, barrel chest, arthritis, & PAD)
Term
Hypothyroidism
Definition
decreased metabolic rate
myxedema
elevated serum cholesterol (undigested/used due to lower metabolism)
Slow, weak, cold intolerant, gaining weight

Tested with iodine uptake tests, and scans
Term
Hyperthyroidism
Definition
increased metabolic rate & O2 consumption
increased SNS sensitivity

CM: heat intolerant, jittery, wasting, tachycardic/arrhythmic, dyspneic

Thyroid Storm: acute severe hyperthyroidism, life threatening tachycardia and hyperthermia
Term
Graves' Disease
Definition
autoimmune hyperthyroidism: TSI's overstimulate thyroid gland
familial tendency is evident
Term
Addison's Disease
Definition
Primary adrenal insufficiency: decreased production of Mineralo/Glucocorticoids and androgens

CM: wasting, hyponatremia/hyperkalemia, bronzing, N/V,D
Term
Cushing Syndrome
Definition
(usually secondary) hyperglucocorticoidism: mainly over-production of cortisol

CM: poor metabolism of fat, carbs, and electrolytes leads to weight-gain, edema, and muscle wasting
Term
adrenal crisis and its relationship to Addison's patients
Definition
acute adrenal insufficiency: deadly lack of cortisol (tachycardia becomes CVA).
Addison's often treated with exogenous cortisol, which can induce Cushing syndrome. If cortisol is cut off quickly rather than tapered off, the dependent body can undergo adrenal crisis.
Term
ADH
Definition
anti-diuretic hormone: peptide hormone secreted from the posterior pituitary and acts on nephrons to increase water permeability, and causes vasoconstriction IRT stimulation of osmoreceptors-->Hypothalamus-->PPG
Term
aldosterone
Definition
mineralocorticoid synthesized in and released by the adrenal cortex; stimulated by angiotensin II; increases reabsorption of sodium and therefore water
Term
Inflammatory Process
Definition
external stimulus--> histamine--> vasoconstriction, vasodilation, and first responders--> cytokines--> cellular response

HeLPaRS: Heat, Loss of function, Pain, Redness, Swelling
Term
Thyroid cells and related hormones (and their functions)
Definition
Follicular: T3 & T4 (metabolism; fetal growth/development)
C cells: Calcitonin (osteoblast stimulation--> lowered blood Ca++ & PO4-)
Term
Parathyroid glands
Definition
secrete PTH, stimulates osteoclast activity, raises serum Ca++
Term
Pancreatic islet cell secretions and their functions
Definition
insulin: facilitates glucose transport into cells, and glycogen formation; down-regulates gluconeogenesis
glucagon: facilitates glycogen breakdown and release as well gluconeogenesis
Somatostatin: delays intestinal absorption of glucose
Term
Vitamin D
Definition
activated in the kidney, stimulates Ca absorption in intestine
Term
Ovarian hormones and their functions
Definition
Estrogen: female sex-specific development

Progesterone: menstrual cycle, pregnancy
Term
Testosterone
Definition
produced in the testes: male sex-specific development & sperm production
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