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Patho Ch. 18
n/a
26
Other
Undergraduate 4
03/26/2012

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Term
hormone receptors
Definition
may be located on plasma membrane or in intracellular compartment of target cell
Term
lipid-soluble hormone receptors
Definition
steroid hormonesl, thyroid hormones, vitamin D, and retinoid
cross lipid plasma membrane by diffusion and bind to receptor molecules in cytoplasm
Term
Primary disoders
Definition
originate within the target gland responsible for producing the hormone
Term
Secondary disorders
Definition
shows target gland is essentially normal, but function is altered by defective levels of stimulating hormones or releasing factors from the hypothalamic-pituitary system
Term
Chromophobe adenoma`
Definition
destroys the pituitary by compression
Term
Craniopharyngioma
Definition
eosinophilic adenoma associated with acromegaly and postpartum pituitary necrosis from intraportal blood loss and hypotensive shock
tumor arising from the cell rests derived from the infundibulum of the hypophysis or Rathke's pouch
Term
diabetes insipidus
Definition
insufficiency of ADH with polyuria and polydipsia
Term
What's thyrotropin-releasing hormone (TRH) produced by?
Definition
hypothalamus
Term
What's TRH control the release of?
Definition
thyroid-stimulating hormone (TSH)
Term
Where's TSH released from?
Definition
anterior pituitary gland
Term
goiter
Definition
increase in size of thyroid gland
Term
What's low serum of calcium cause?
Definition
increase meuromuscular excitabilty, tetany, carpal and pedal spasm, laryngospasm, bronchospasm, anxiety, circumoral and acral paresthesias, EKG changes, and seizures
Term
What's hypercalcemia cause?
Definition
anorexia, nausea and vomiting, weakness and lethargy, muscle hypotonia and hyporeflexia, and constipation
High serum calcium can lead to poluria and polydipsia from lesions in the nephron, and causes deposits of calcium and phosphate in blood vessels, joints, cornea, kidney, and gastric mucosa
Term
parathyroid hormone
Definition
increases serum calcium and decreases serum phosphate
Term
calcitonin (produced in thyroid)
Definition
lowers serum calcium and lowers phosphate
Term
1,25-dehydroxycholecalciferol (synthesized in kidney)
Definition
becomes vitamin D and stimulates the active absorption of calcium by mucosa of the small intestine and mobilizes calium from bone
Term
What's the breakdown of glycogen controlled by?
Definition
glucagon and epinephrine
Term
Where's epinephrine more effective?
Definition
muscle
Term
Where's glucagon more responsive?
Definition
liver
Term
Von Gierke's disease
Definition
involves a genetic deficiency of glucose-6-phosphatase (needed to remove phosphorus from glucose molecule)
children have stunted growth, liver enlargement, hypoglycemia, and hyperlipidemia due to mobilization of fatty acids
Term
McArdle's disease
Definition
characterized by deficiency in skeletal muscle glycogen and causes extreme muscle weakness
Term
glycogenolysis
Definition
breakdown of glycogen
Term
gluconeogenesis
Definition
converts amino acids, lactate, and glycerol into glucose
most occurs in liver
Term
What hormones stimulate gluconeogensis?
Definition
glucagon, glucocorticoid hormones from adrenal cortex, and thyroid hormone
Term
Diabetes Mellitus: Type 1
Definition
Insulin-Dependent Diabetes Mellitus
individuals requires insulin b/c production is virtually absent and pancreatic beta cells are unresponsive to drugs that stimulate insulin production from normal beta cells
Term
Diabetes Mellitus: Type 2
Definition
Non-Insulin-Dependent Diabetes Mellitus
primarily adult disorder, but is being seen more in juveniles
related to eating habits and being obese
can be treated with drugs and diet change
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