Final Key Words, Phrases, and In-Class Questions Flashcards

1
Q

Pressure diuresis is the term for when you have:

A

Increased blood pressure, raising urinary volume excretion

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2
Q

T/F: Salt sensitivity is potentially inheritable through family lines.

A

True

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3
Q

The Kidneys are highly innervated by ____________ nerve fibers?

A

Sympathetic

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4
Q

Which of the following is NOT a major hormonal factor in the renal system?

A. Angiotensin II
B. Estradiol
C. Aldosterone
D. ADH (antidiuretic hormone/vasopressin)

A

B. Estradiol

The Big 4:
Angiotensin II, Aldosterone, ADH, Atrial Natriuretic Peptide

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5
Q

When regulating potassium balance: What is responsible for the increased secretion of catecholamines, causing movement of potassium into cells?

A

B-Adrenergic stimulation

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6
Q

T/F: The release of Atrial Natriuretic Peptide (ANP) results in an increase in GFR and an increase in sodium reabsorption.

A

False

Should be:
Increase in GFR and Decrease in sodium reabsorption

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7
Q

The presence of aldosterone stimulates the active secretion of _________ contained in the principle cells.

A

Potassium

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8
Q

Because of the pressure diuresis mechanism, the body should be able to handle an increase in fluid and salt intake with little net:

A. change in blood volume
B. change in cardiac output
C. change in arterial pressure
D. all of the above
E. none of the above
A

D. All of the above

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9
Q

Most HCO3- reabsorption occurs in the:

A

Proximal Tubule

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10
Q

H+ is secreted by ________________ in the proximal tubule.

A

Secondary active transport

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11
Q

What state is the body in when there is an increased reabsorption of HCO3- and tubular secretion of H+ is increased?

A

Acidosis

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12
Q

An increase in PCO2 will cause…

A fall in HCO3- will cause…

A

respiratory acidosis

metabolic acidosis

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13
Q

Impaired sodium excretion and electrolyte and fluid imbalance leading to cardiac insufficiency (and eventually death) is a result of….

A

kidney damage

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14
Q

Aldosterone stimulates…

A

active secretion of potassium of the principal cells in the late distal tubules and collecting ducts

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15
Q

A person is considered to have ____ when their pH increases above 7.4

A

Alkalosis

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16
Q

What individuals see a marked increase in blood pressure with very little salt intake?

A

“Salt sensitive” individuals

17
Q

What is released as a result of stretch receptors in the cardiac atria?

A

Atrial Nariuretic Peptide (ANP)

18
Q

In renal correction of acidosis there is a decrease in…

A

There is a dec. in the ratio of HCO3- to H+ in the renal tubules

19
Q

Pressure natriuresis is…

A

The raise in sodium excretion that occurs with elevated blood pressure

20
Q

Excess aldosterone in they system will lead to…

A

hypokalemia

21
Q

Increased potassium intake stimulates….

A

aldosterone production

22
Q

Increased extracellular fluid potassium concentration increases…

A

aldosterone secretion by the adrenal cortex

23
Q

Kidneys retain salt & water in an attempt to…

A

normalize pressure

24
Q

H+ is combined with buffers in the tubular fluid. 2 main buffers:

A

phosphate

ammonia

25
Q

Where there is fluid deprivation…

A

increased ADH = inc reabsorption of fluid, maintain excretion of sodium (creates concentrated urine)

26
Q

In respiratory acidosis or metabolic acidosis there is an increase in…

A

H+ concentration of ECF

27
Q

ALL enzyme systems and body functions are altered by…

A

H+ concentration

kept very low comparatively

28
Q

3 systems that defend against changes in H+ concentrations:

A

Acid-base buffering system (1st line, within seconds- do not eliminate H+)

Respiratory center (2nd line, within minutes- reduce H+)

The kidneys (3rd line, within hours to days- most powerful)