Endocrine 2 Flashcards
The major source of IFG-I is found where?
LIVER
The production of IGF-I is controlled by a number of factors in addition to ‘GH’. There are 3 of them. What are they?
- NUTRITIONAL STATUS
- AGE
- TISSUE-SPECIFIC FACTORS
- GONADOTROPINS
- SEX HORMONES
These hormones play a MAJOR role in stimulating the closure of the epiphyseal plate.
SEX HORMONES
The 2 ‘POSTERIOR PITUITARY’ hormones are synthesized where? How are they transported?
- SYNTHESIZED IN HYPOTHALAMUS
2. INTRACELLULARLY TO ‘POSTERIOR PITUITARY’
What are the effects of ‘OXYTOCIN’? (*There are 2 of them)
Both of these are considered to be what type of ‘Feedback Mechanism’?
- STIMULATES MILK SECRETION
- STIMULATES STRONG UTERINE CONTRACTIONS DURING PARTURITION
‘POSITIVE FEEDBACK’
How does ‘OXYTOCIN’ cause ‘Milk Secretion’?
CAUSES CONTRACTION OF MYOEPITHELIAL CELLS AROUND MAMMARY ALVEOLI.
How does ‘OXYTOCIN’ cause ‘Uterine Contraction’?
ALTERS TRANSMEMBRANE IONIC CURRENTS IN MYOMETRIAL SMOOTH MUSCLE CELLS.
Where is ADH released? It is released in response to what (*2 things)?
- POSTERIOR PITUITARY
- INCREASED PLASMA TONICITY
- FALLING BLOOD PRESSURE
Where is the ‘ADRENAL GLAND’ located?
SUPERIOR BORDER OF THE KIDNEY
The ‘ADRENAL MEDULLA’ secretes what type of hormones?
CATECHOLAMINE HORMONES
The ‘ADRENAL CORTEX’ secretes what type of steroids?
CORTICOSTEROIDS
‘CORTICOSTEROIDS’ which are secreted from the ‘ADRENAL CORTEX’ participate in 3 things. What are the 3 things?
- MINERAL BALANCE REGULATION
- ENERGY BALANCE
- REPRODUCTIVE FUNCTION
What % of the catecholamines released from the ‘ADRENAL MEDULLA’ is ‘EPINEPHRINE’?
80% = EPINEPHRINE
What % of the catecholamines released from the ‘ADRENAL MEDULLA’ is ‘NOREPINEPHRINE’?
20% = NOREPINEPHRINE
The ‘ADRENAL GLAND’ is separated into two parts. What are the two parts?
- ADRENAL CORTEX (UPPER)
2. ADRENAL MEDULLA (LOWER)
The ‘ADRENAL CORTEX’ is separated into ‘3 ZONES’. What are the 3 zones and where are they located?
- ZONA GLOMERULOSA (Outer)
- ZONA FASCICULATA (Middle)
- ZONA RETICULARIS (Bottom)
*Glow Faster Rat! (Mnemonic)
There are 3 main types of ‘CORTICOSTEROID’ hormones. What are they?
- MINERALCORTICOIDS
- GLUCOCORTICOIDS
- GONADOCORTICOIDS
- ‘MINERALCORTICOIDS’ are responsible for what hormone?
- Where is this hormone made?
- What does this hormone do?
- What regulates this hormone?
- ALDOSTERONE
- ZONA GLOMERULOSA (OUTER)
- Na+/K+/WATER BALANCE
- RENIN-ANGIONTENSIN SYSTEM
- ‘GLUCOCORTICOIDS’ are responsible for what hormone?
- Where is this hormone made?
- What does this hormone do? (*4 things)
- What regulates this hormone?
- CORTISOL
- ZONA FASCICULATA (MIDDLE)
- ANTI-INFLAMMATORY, DECREASED ANTIBODY PRODUCTION, GLUCOSE/CARBO METABOLISM, VASOCONSTRICTION
- ACTH (In response to stress)
- ‘GONADOCORTICOIDS’ are responsible for what hormones?
- Where are these hormones made?
- What does these hormones do?
- What regulates these hormones?
- SEX HORMONES
- ZONA RETICULARIS (BOTTOM)
- SUPPLEMENT THE SEX HORMONES FROM THE GONADS
- N/A (NONE)
What cells of the ‘ADRENAL MEDULLA’ are responsible for the secretion of catecholamines (norepi, epi) in a sympathetic response?
CHROMAFFIN CELLS
What disease would someone have with the following symptoms:
- Inadequate glucocorticoid/mineralcorticoid secretion resulting in hypoclycemia
- Na+ / K+ Imbalance
- Dehydration
- Hypotension
- Weight Loss
- General Weakness
ADDISON’S DISEASE
‘ADDISON’S DISEASE’ has a symptom of ‘inadequate secretion of glucocorticoids/mineralcorticoids. This is caused by DECREASED activity where?
ADRENAL CORTEX
The ‘INCREASED SKIN PIGMENTATION’ and ‘HYPERSECRETION’ of ACTH is a symptom of what disease?
ADDISON’S DISEASE