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Physiology > Renal Physio > Flashcards

Renal Physio Flashcards

0
Q

Wt of kidney

A

150g

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1
Q

Location of kidney

A

T12-L3

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2
Q

Aka “glomerular cells of the afferent arterioles”

A

JG cells

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3
Q

JG cells are found where

A

Afferent arterioles

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4
Q

Location of macula densa

A

Distal tubule

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5
Q

Workhorse of the tubular system

A

PCT

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6
Q

Substances that are filtered only

A

Inulin, creatinine

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7
Q

Substances that are completely reabsorbed

A

Glucose, amino acids

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8
Q

Substances that are filtered then secreted

A

PAH, organic acida and bases

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9
Q

Normal GFR

A

125ml/min or 180L/day

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10
Q

GFR/RPF

A

Filtration fraction

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11
Q

Hormone that preserves GFR

A

Angiotensin II

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12
Q

Local autoregulation occurs at BP of

A

75-160mmHg

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13
Q

Constant sodium load delivered to distal tubule

A

Tubuloglomerular feedback

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14
Q

Vasoconstricts afferent arteriole

A

Adenosine

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15
Q

Vasodilates afferent arteriole

A

Nitric oxide

16
Q

Percentage of solute reabsorbed is held constant

A

Glomerulotubular balance

17
Q

All substances appear in urine; all neohrons exhibit saturation

A

Renal transport maximum

18
Q

Responsive to vasopressin

A

Collecting duct

19
Q

Area where principal cells and intercalated cells are found

A

Second part of distal tubule

20
Q

Site of action of aldosterone

A

Distal tubule

21
Q

Effect of alcohol on ADH secretion

A

Decreases ADH secretion

22
Q

Regulates glucose

A

Na glucose cotransport

23
Q

Threshold for glucose

A

200mg/100ml

24
Q

Glucose transport from lumen to PCT

A

SGLT 2

25
Q

Glucose transport from PCT to peritubular capillaries

A

GLUT 1 and GLUT 2

26
Q

Factors that shift K into cells

A

K AIBA- aldostorone, insulin, b adrenergic stimulation, alkalosis

27
Q

Where does regulation of K occur

A

Late distal and cortical collecting tubules

28
Q

Serves as urinary buffer for H

A

Unreabsorbed phosphate

29
Q

Countercurrent multiplier

A

Loop of henle

30
Q

Countercurrent exchanger

A

Vasa recta

31
Q

where is the thirst center found?

A

Anterovrntral wall of 3rd ventricle and preoptic nuclei

Physiology (22 decks)

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