SODIUM REGULATION & VALUES

Question 1

NATRIUM

Answer 1

SODIUM

Question 2

The MOST ABUNDANT CATION in the ECF
Major Extracellular CATION in the plasma

Answer 2

SODIUM

Question 3

The movement is regulated by active transport through

Answer 3

Na, K - ATPase ion pump

Question 4

Na+, K+ -ATPase ion pump moves __ Na ions out of the cell in exchange for __ K ions (PISO)

Answer 4

3: 2

Question 5

balance of charge in and out of the cells

Answer 5

Electroneutrality

Question 6

T/F. The movement of both K and Na (MAJOR CATIONS) can affect the positive charge distribution in and out of the cell

Answer 6

True

Question 7

Plasma concentration depends in

Answer 7

renal regulation

Question 8

Intake of water in response to

Answer 8

thirst

Question 9

T/F. Na+ is one of the MAJOR CONTRIBUTORS of plasma osmolality.

Answer 9

True

Question 10

↑ Na+ intake will ↑ plasma osmolality (solute per kg of solvent ), causing thirst center activation in the _____________ of the brain

Answer 10

hypothalamus

Question 11

Excretion of water as affected by AVP

Answer 11

(Arginine Vasopressin; formerly known as ADH)

Question 12

T/F. When there is water loss, there will be increased plasma volume and this could decrease the sodium level in the plasma (Increased Plasma Osmolality)

Answer 12

False, decreased plasma volume and this could increase the sodium level in the plasma

Question 13

T/F. The blood volume status, which affects Na excretion through:
 Since sodium is abundant in the plasma, the plasma volume level will determine how much sodium is removed/ retained/reabsorbed by the kidneys.

Answer 13

True

Question 14

promotes INCREASED NA+ REABSORPTION in the kidneys

Answer 14

Aldosterone

Question 15

T/F. In exchange for Na conservation/reabsorption, there must be EXCRETION OF K

Answer 15

True

Question 16

promotes INCREASED ALDOSTERONE SECRETION by the adrenal glands

Answer 16

Angiotensin II (active angiotensin)

Question 17

promotes INCREASED EXCRETION OF NA+ in urine; ANTAGONIST OF ALDOSTERONE

Answer 17

ANP (Atrial Natriuretic Peptide)

Question 18

T/F. The plasma sodium concentration is not depends on HOMEOSTASIS

Answer 18

False, depends greatly on HOMEOSTASIS

Question 19

T/F. Sodium and potassium are ER REQUEST

Answer 19

True

Question 20

important for volume regulation &movement of fluid in and out of the vessels

Answer 20

Sodium

Question 21

critical for myocardial contractility or movement

Answer 21

Potassium

Question 22

T/F. High potassium and sodium: severe sequelae

Answer 22

False, Low potassium and sodium

Question 23

Treatment: Include electrolytes in IV

Answer 23

Purple Colored NSS w/Sodium & Potassium

Question 24

Reference values of Sodium

Answer 24

135-145 mmol/L

Question 25

Threshold critical value:
critical high (HYPERNATREMIA)

Answer 25

160 mmol/L: >160

Question 26

Threshold critical value:
critical low for (HYPONATREMIA)

Answer 26

120 mmol/L: <120

Question 27

CSF Sodium values

Answer 27

136-150 mmol/L

Question 28

T/F. Sodium is also present in CSF since it can pass through the Blood Brain Barrier

Answer 28

True