3.3.6 Electrolytes (Calcium) Flashcards
Calcium homeostasis are regulated by:
- Thyroid hormone
- Active Vit D
- Calcitonin
which of the following does not belong?
Thyroid
Should be Parathyroid
Promotes calcium by Bone resorption
a. Parathyroid
b. Active Vit D
c. Calcitonin
a
Promotes calcium by Reabsorption of Ca and Excretion of Phosphate
a. Parathyroid
b. Active Vit D
c. Calcitonin
a
Promotes calcium by Intestinal absorption of Ca
a. Parathyroid
b. Active Vit D
c. Calcitonin
b
Activates 25 Hydroxycholecalciferol (25 (OH)D3)
a. Parathyroid
b. Active Vit D
c. Calcitonin
a
Activates Vit D
a. Parathyroid
b. Active Vit D
c. Calcitonin
a
1,25 Dihydroxycholecalciferol / 1,25 (OH)2D3
a. Active form of Vit D
b. Inactive form of Vit D
a
25 Hydroxycholecalciferol / 25 (OH)D3
a. Active form of Vit D
b. Inactive form of Vit D
b
Inhibits Parathyroid hormone actions
a. Parathyroid
b. Active Vit D
c. Calcitonin
c
Promotes calcium bu reabsorption of both Ca and PO4
a. Parathyroid
b. Active Vit D
c. Calcitonin
b
Releases PTH that acts on Bone and Kidneys
a. Parathyroid Gland
b. Bone
c. Kidneys
d. Small intestin
e. Thyroid gland (C-cells)
a
RESORPTION of Ca
a. Parathyroid Gland
b. Bone
c. Kidneys
d. Small intestin
e. Thyroid gland (C-cells)
b
REABSORPTION of Ca
a. Parathyroid Gland
b. Bone
c. Kidneys
d. Small intestin
e. Thyroid gland (C-cells)
c
Produces Calcitonin
a. Parathyroid Gland
b. Bone
c. Kidneys
d. Small intestin
e. Thyroid gland (C-cells)
e
Reabsorption of DIETARY Ca
a. Parathyroid Gland
b. Bone
c. Kidneys
d. Small intestin
e. Thyroid gland (C-cells)
d
Distribution of Total plasma Ca:
___ Free/Ionizes Ca (Active form)
___ Bound to proteins
___ Bound to Ions
50%
40%
10%
Normal Ref Value:
a. 4.3-5 mEq/L (8.6-10 mg/dL)
b. 3.4-5 mEq/L (6.8-10 mg/dL)
a
Panic value of Ca:
Hypocalcemia:____
Hypercalcemia: ____
a. ≤6 mg/dL ; ≥ 13 mg/dL
b. ≤7 mg/dL ; ≥ 14 mg/dL
c. ≤1 mg/dL ; ≥ 2 mg/dL
a
Gold Standard for Divalent Cations
a. Atomic Absorption Spectrophotometry
b. ISE
c. Dye-binding
a
Used to measure Ionized Ca
a. Atomic Absorption Spectrophotometry
b. ISE
c. Dye-binding
b
Routine method for TOTAL calcium
a. Atomic Absorption Spectrophotometry
b. ISE
c. Dye-binding
c
Ortho-cresolphthalein complexone (CPC) Method
a. Atomic Absorption Spectrophotometry
b. ISE
c. Dye-binding
c
Ortho-cresolphthalein complexone (CPC) Method requires the addition of 8-hydroxyquinoline that results to what color?
Red
An alternative dye for calcium determination
a. Arsenazo III
b. Redox Titration method
a
Has high affinity for Ca and Inhibits mg
a. Arsenazo III
b. Redox Titration method
a
(+) Results for Aresenazo III?
Violet
In Redox Titration Methods:
Purple (+)
a. Clark-Collip Oxalic Acid Precipitation
b. Ferro-Ham Chloranilic Acid Precipitation
both
Primary hyperparathyroidism
a. Hypocalcemia
b. Hypercalcemia
b
Primary hypoparathyroidism
a. Hypocalcemia
b. Hypercalcemia
a
Secondary Hypoparathyroidism
a. N to Increase PTH
b. N to Decrease PTH
b
PTH resistance
a. N to Increase PTH
b. N to Decrease PTH
a
Malignancy
Multiple myeloma
Vit. D excess (Hypervitaminosis D)
Bone wasting due to prolonged immobilization (bedridden)
a. Hypocalcemia
b. Hypercalcemia
b
- Chronic Renal Failure
- Hypomagnesemia
- Hypoalbuminemia
- Pseudohypoparathyroidism
- Vit. D deficiency
- Pancreatitis
a. Hypocalcemia
b. Hypercalcemia
a
