Endocrine Disorders Part 2: Flashcards
(135 cards)
Homeostatis is maintained through ____ feedback control mechanism
Negative
Controls function for the rest of the Endocrine system.
Sends releasing hormones to the Anterior Pituitary
Directly connected with the posterior Pituitary: Makes & stores Vasopressin (ADH) & oxytocin
Name organ…
Hypothalamus
Vasopressin (ADH) & Oxytocin are made in the hypothalamus but stored here ..
Posterior Pituitary
Anterior Pituitary Hormones
- Corticosteroids & adrenocortical
- Ovulation, progesterone, testosterone
- Estrogen, spermogenesis, follicle maturation
- Promotes growth through lipolysis, protein anabolism, insulin antagonism
Adrenocorticotropic hormone
1. Corticosteroids & adrenocortical
Luteinizing hormone
2. Ovulation, progesterone, testosterone
Follicle-Stimulating hormone
3. Estrogen, spermogenesis, follicle maturation
Growth hormone
4. Promotes growth through lipolysis, protein anabolism, insulin antagonism
Posterior Pituitary secretes these 2 hormones…
Vasopressin (ADH) Promotes water reabsorption
Oxytocin: Uterine contractions and breast milk ejection (let down)
Male & Female reproductive endocrine glands …. aka
Gonads
Adrenal Cortex makes up 90% of the adrenal glands.
It releases Mineralcorticoid steroids (control fluid & electrolyte balance)
&
Glucocorticoid: Essential for life.
Name the hormone it release and function….
Name the 2 hormones…
Aldosterone: Promotes sodium & water reabsorption
Renin: RAAS
Glucocorticoid = Cortisol
Stress response
Metabolism of all foods
Emotional stability
Immune
Sodium and Water balance
Adrenal medulla releases Catecholamines.
Name (2) and their effects…
Epinephrine 85%
Norepinephrine 15%
____ controls metabolism by secreting Thyroxine T4 (80%) & Triiodothyronine T3 (20%)
Regulates calcium & phosphorus balance by secreting …..
Thyroid gland
Thyrocalcitonin TCT (calcitonin)
Parathyroid gland is 4 small glands located on back of thyroid gland.
Parathyroid hormone
Regulates Calcium & phosphorus metabolism
Acts on bones, kidneys, and GI tract how…..
Bone: increase release of Calcium & phosphorus from bone into ECF. (BONE REABSORPTION)
Decrease Bone Formation
Increase Bone Breakdown
Kidney
Activates vit D
Increase reabsorption of Calcium & Mag
Increase Excretion Phosphorus, bicarbonate, sodium
GI
Activated vit D Enhances absorption of calcium & phosphorus
OVERALL INCREASED Vit D
Decreased ADH production with aging will produce (Concentrated/ Dilute) urine…
Dilute.
ADH concentrates urine and keep you from peeing it out. ADH increases fluid levels in the body
Deficiency in ___ (2) can cause Endocrine Disorders.
Protein & Iodine
Hirsutism is….
This occurs due to an excess of androgens (male hormones) or increased sensitivity of hair follicles to these hormones
Causes…(3)
Causes from medications…
When women grow facial, chest, and abdomen hair.
Polycystic Ovary Syndrome (PCOS) – The most common cause, leading to excess androgen production.
Cushing’s Syndrome – High cortisol levels can increase androgen levels.
Congenital Adrenal Hyperplasia (CAH) – A genetic disorder affecting adrenal hormone production.
Meds that cause hirsutism
Steroids, androgens, and some medications (e.g., danazol, minoxidil) can trigger excessive hair growth.
To confirm hyperthyroidism gently palpation of the thyroid can confirm….
False.
Dont palpate.
Causes thyroid storm
Lab diagnostics
Blood
Place _____ on ice
Dont use ______ due to Contamination
Catecholamines on ice
No double / triple lumens Contaminación
Endocrine Lab
Urine
This type of collection….
24 hr.
Is it still clean catch?
_____ measure level of specific hormone in blood or body fluid.
Assays
Very sensitive, can detect minute quantities
Endocrine assessment
Provocative test….
Vs
Suppression test….
Provocative test: Test UnderActive gland by stimulating it & compare measurements before & after.
Suppression test: High hormones, Suppression drugs given.
Failure of Suppression of hormone production indicates Hyperfunctiin
Diagnostics
_____ are used when hormone levels too low to measure.
Genetic DNA/RNA
Skull xray
Assess for erosion of sella turcica.
Why…
MRI w/ contrast or CT . WHY…
Hosuses Pituitary
Most sensitive image of pituitary
Thyroid, parathyroid, ovaries & testies are imaged using…
US
Adrenal glands, ovaries, pancreas use this imaging device…
CT
Diagnostic
Used to indicate composition of thyroid noddles…
Needle biopsy
Endocrine problems can be slow/insidious or abrupt/ life threatening….
True