2024 /2025 | © copyright | This work may not be copied for profit gain Excel!
CCRN- Endocrine Concepts (Barron's)
Questions and Correct Answers | Latest
Update
measure of the number of particles in a solution; expressed as milliosmoles
✓ -:- serum osmolality (osmolality of body fluids)
what is the normal osmolality of body fluids?
✓ -:- 275-295 mOsm/kg
✓ (hypo-osmolar <275
✓ hyper-osmolar >295)
true or false:
cell membranes are permeable to water, therefore serum osmo will affect the intracellular
fluid (ICF) osmo
✓ -:- true
note that serum sodium, BUN, and glucose each play a role in the calculation of serum
osmolality.
1|P a g e | G r a d e A + | 2 0 2 0 2 5
,2024 /2025 | © copyright | This work may not be copied for profit gain Excel!
2(Na+) + BUN/5 + glucose/20 = 275-295 mOsm/kg. According to the formula above, an
increase in serum sodium, BUN, and/or glucose will affect the serum osmo, increasing or
decreasing the serum osmolality?
✓ -:- increase
where is the hypothalamus located?
✓ -:- pituitary gland
the endocrine "monitoring central" and regulates temperature, intake drives, autonomic
nervous system (sympathetic/parasympathetic)
✓ -:- hypothalamus
what two parts of the body release hormones that are NOT controlled by the
hypothalamus?
✓ -:- 1) pancreas
2) parathyroid
what are three things that the hypothalamus regulates?
2|P a g e | G r a d e A + | 2 0 2 0 2 5
, 2024 /2025 | © copyright | This work may not be copied for profit gain Excel!
✓ -:- 1) temperature
2) intake drives
3) autonomic nervous system (sympathetic/parasympathetic)
where is ADH formed?
✓ -:- hypothalamus
where is ADH stored?
✓ -:- posterior pituitary
this works on the distal convoluted and collecting tubule of kidney to REABSORB WATER
(prevents diuresis) and concentrates urine (normal urine osmolality (1.010-1.020)
✓ -:- ADH
what is the pathophysiology of SIADH? (figure 10-1 pg 204)
✓ -:- too much ADH--> water retention--> decrease in serum Na+
(dilutional hyponatremia-CARDINAL SIGN); decreased urinary output;
decreased osmolality (hypo-osmolality)
3|P a g e | G r a d e A + | 2 0 2 0 2 5
CCRN- Endocrine Concepts (Barron's)
Questions and Correct Answers | Latest
Update
measure of the number of particles in a solution; expressed as milliosmoles
✓ -:- serum osmolality (osmolality of body fluids)
what is the normal osmolality of body fluids?
✓ -:- 275-295 mOsm/kg
✓ (hypo-osmolar <275
✓ hyper-osmolar >295)
true or false:
cell membranes are permeable to water, therefore serum osmo will affect the intracellular
fluid (ICF) osmo
✓ -:- true
note that serum sodium, BUN, and glucose each play a role in the calculation of serum
osmolality.
1|P a g e | G r a d e A + | 2 0 2 0 2 5
,2024 /2025 | © copyright | This work may not be copied for profit gain Excel!
2(Na+) + BUN/5 + glucose/20 = 275-295 mOsm/kg. According to the formula above, an
increase in serum sodium, BUN, and/or glucose will affect the serum osmo, increasing or
decreasing the serum osmolality?
✓ -:- increase
where is the hypothalamus located?
✓ -:- pituitary gland
the endocrine "monitoring central" and regulates temperature, intake drives, autonomic
nervous system (sympathetic/parasympathetic)
✓ -:- hypothalamus
what two parts of the body release hormones that are NOT controlled by the
hypothalamus?
✓ -:- 1) pancreas
2) parathyroid
what are three things that the hypothalamus regulates?
2|P a g e | G r a d e A + | 2 0 2 0 2 5
, 2024 /2025 | © copyright | This work may not be copied for profit gain Excel!
✓ -:- 1) temperature
2) intake drives
3) autonomic nervous system (sympathetic/parasympathetic)
where is ADH formed?
✓ -:- hypothalamus
where is ADH stored?
✓ -:- posterior pituitary
this works on the distal convoluted and collecting tubule of kidney to REABSORB WATER
(prevents diuresis) and concentrates urine (normal urine osmolality (1.010-1.020)
✓ -:- ADH
what is the pathophysiology of SIADH? (figure 10-1 pg 204)
✓ -:- too much ADH--> water retention--> decrease in serum Na+
(dilutional hyponatremia-CARDINAL SIGN); decreased urinary output;
decreased osmolality (hypo-osmolality)
3|P a g e | G r a d e A + | 2 0 2 0 2 5
