3.3.6 Electrolytes (Calcium)

Question 1

Calcium homeostasis are regulated by:

• Thyroid hormone
• Active Vit D
• Calcitonin

which of the following does not belong?

Answer 1

Thyroid

Should be Parathyroid

Question 2

Promotes calcium by Bone resorption

a. Parathyroid
b. Active Vit D
c. Calcitonin

Answer 2

a

Question 3

Promotes calcium by Reabsorption of Ca and Excretion of Phosphate

a. Parathyroid
b. Active Vit D
c. Calcitonin

Answer 3

a

Question 4

Promotes calcium by Intestinal absorption of Ca

a. Parathyroid
b. Active Vit D
c. Calcitonin

Answer 4

b

Question 5

Activates 25 Hydroxycholecalciferol (25 (OH)D3)

a. Parathyroid
b. Active Vit D
c. Calcitonin

Answer 5

a

Question 6

Activates Vit D

a. Parathyroid
b. Active Vit D
c. Calcitonin

Answer 6

a

Question 7

1,25 Dihydroxycholecalciferol / 1,25 (OH)2D3

a. Active form of Vit D
b. Inactive form of Vit D

Answer 7

a

Question 8

25 Hydroxycholecalciferol / 25 (OH)D3

a. Active form of Vit D
b. Inactive form of Vit D

Answer 8

b

Question 9

Inhibits Parathyroid hormone actions

a. Parathyroid
b. Active Vit D
c. Calcitonin

Answer 9

c

Question 10

Promotes calcium bu reabsorption of both Ca and PO4

a. Parathyroid
b. Active Vit D
c. Calcitonin

Answer 10

b

Question 11

Releases PTH that acts on Bone and Kidneys

a. Parathyroid Gland
b. Bone
c. Kidneys
d. Small intestin
e. Thyroid gland (C-cells)

Answer 11

a

Question 12

RESORPTION of Ca

a. Parathyroid Gland
b. Bone
c. Kidneys
d. Small intestin
e. Thyroid gland (C-cells)

Answer 12

b

Question 13

REABSORPTION of Ca

a. Parathyroid Gland
b. Bone
c. Kidneys
d. Small intestin
e. Thyroid gland (C-cells)

Answer 13

c

Question 14

Produces Calcitonin

a. Parathyroid Gland
b. Bone
c. Kidneys
d. Small intestin
e. Thyroid gland (C-cells)

Answer 14

e

Question 15

Reabsorption of DIETARY Ca

a. Parathyroid Gland
b. Bone
c. Kidneys
d. Small intestin
e. Thyroid gland (C-cells)

Answer 15

d

Question 16

Distribution of Total plasma Ca:

___ Free/Ionizes Ca (Active form)
___ Bound to proteins
___ Bound to Ions

Answer 16

50%
40%
10%

Question 17

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)

Answer 17

a

Question 18

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

Answer 18

a

Question 19

Gold Standard for Divalent Cations

a. Atomic Absorption Spectrophotometry
b. ISE
c. Dye-binding

Answer 19

a

Question 20

Used to measure Ionized Ca

a. Atomic Absorption Spectrophotometry
b. ISE
c. Dye-binding

Answer 20

b

Question 21

Routine method for TOTAL calcium

a. Atomic Absorption Spectrophotometry
b. ISE
c. Dye-binding

Answer 21

c

Question 22

Ortho-cresolphthalein complexone (CPC) Method

a. Atomic Absorption Spectrophotometry
b. ISE
c. Dye-binding

Answer 22

c

Question 23

Ortho-cresolphthalein complexone (CPC) Method requires the addition of 8-hydroxyquinoline that results to what color?

Answer 23

Red

Question 24

An alternative dye for calcium determination

a. Arsenazo III
b. Redox Titration method

Answer 24

a

Question 25

Has high affinity for Ca and Inhibits mg

a. Arsenazo III
b. Redox Titration method

Answer 25

a

Question 26

(+) Results for Aresenazo III?

Answer 26

Violet

Question 27

In Redox Titration Methods:

Purple (+)

a. Clark-Collip Oxalic Acid Precipitation
b. Ferro-Ham Chloranilic Acid Precipitation

Answer 27

both

Question 28

Primary hyperparathyroidism

a. Hypocalcemia
b. Hypercalcemia

Answer 28

b

Question 29

Primary hypoparathyroidism

a. Hypocalcemia
b. Hypercalcemia

Answer 29

a

Question 30

Secondary Hypoparathyroidism

a. N to Increase PTH
b. N to Decrease PTH

Answer 30

b

Question 31

PTH resistance

a. N to Increase PTH
b. N to Decrease PTH

Answer 31

a

Question 32

Malignancy
Multiple myeloma
Vit. D excess (Hypervitaminosis D)
Bone wasting due to prolonged immobilization (bedridden)

a. Hypocalcemia
b. Hypercalcemia

Answer 32

b

Question 33

• Chronic Renal Failure
• Hypomagnesemia
• Hypoalbuminemia
• Pseudohypoparathyroidism
• Vit. D deficiency
• Pancreatitis

a. Hypocalcemia
b. Hypercalcemia

Answer 33

a