Urinary Flashcards

1
Q

Micturition/urination

A

Process of eliminating urine

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2
Q

How does urinary system stabilize blood pH

A

Controls loss of H+ and bicarbonate

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3
Q

Which ribs are the kidneys found near

A

11th and 12th
“Barely protected”

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4
Q

Function of renal lobule

A

Produce urine

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5
Q

When is the waste in the urinary tract called urine

A

When it reaches renal pelvis
After it passes minor calyx

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6
Q

Basic unit of a kidney

A

Nephron

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7
Q

Function of nephron

A

Produce urine

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8
Q

Cortical nephrons

A

Nephrons that have loop of henles mostly in the renal cortex

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9
Q

What is a juxtamedullary nephron

A

Nepohrons that have loops that extend mostly into renal pyramids

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10
Q

Where do nephrons start

A

Renal corpuscle

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11
Q

Function of glomerulus

A

Filters fluid and solutes from blood into capsule

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12
Q

Filtrate description

A

Protein and cell free solution

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13
Q

Renal corpuscle is for production of filtrate true/false

A

True

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14
Q

Proximal convoluted tubule function

A

For water & solute reabsorption

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15
Q

What substances are secreted into filtrate by tubule system

A

Ions, acids, drugs, & toxins

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16
Q

Where does tubule system release secretions into filtrate via hormones

A

Distal convoluted tubule

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17
Q

Most common nephrons in the kidneys

A

Cortical nephrons

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18
Q

Podocytes

A

Cells in glomerulus capsule that act as filtration slits

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19
Q

Filtration slits

A

Narrow gaps between adjacent pedocytes

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20
Q

Juxtaglomerular complex

A

Structure containing macula densa and juxtaglomerular cells

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21
Q

Macula densa

A

Cells that line distal convoluted tubule

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22
Q

Function of mesangual cells

A

Control diameter and rate of capillary blood flow,

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23
Q

Which tube is important solutes reabsorbed from filtrate

A

Proximal convoluted tubule

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24
Q

Organc nitrogenous waste products

A

Urea, creatinine, and uric acid, ammonia

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25
What causes fatal dehydration from urinary system
Failure to concentrate filtrate in glomerular filtration
26
Where does active secretion occur in nephron
Distal convoluted tubule
27
Examples of substances that act as cotransporter
Glucose and sodium together
28
Renal threshold
Plasma concentration a specific compound or ion begins to appear in urine
29
Where do substances reabsorbed from filtrate go
Vasa recta or peritubular capillaries
30
How is small proteins reabsorbed at the distal convoluted tubule
Pinocytosis
31
Relationship of capillary hydrostatic pressure and glomerular hydrostatic pressure
Capillary hydrostatic pressure opposes glomerular hydrostatic pressure -like BCOP
32
Glomerular filtration rate
The amount of filtrate kidneys produce each minute
33
What is creatinine clearance test
Examines how well the kidney is filtering the blood by estimating GFR
34
How is glomerular filtration rate maintained
Autoregulation, hormonal, and autonomic regulation
35
Countercurrent
One end is concentrating filtrate (medulla) another end is diluting it (cortex)
36
Benefits of countercurrent multiplication
1. Efficiently reabsorbs solute and water 2. Establish concentration gradient
37
Less ADH effect on water excretion
Increase loss of water
38
More ADH effect on water excretion
Less water loss
39
Diuresis
Elimination of urine
40
Pyuria
Excretion of excess of WBC
41
What action moves urine
Peristalsis
42
Where does peristalsis begin in urinary system
Renal pelvis
43
Capacity of bladder (average)
1L of urine
44
What holds bladder in place
Ligaments
45
Incontinence
Inability to control urination
46
Location of EPO and renin production
Juxtaglomerular complex/apparatus
47
How much filtrate is made in a day
180L or 48 gallons
48
How much filtrate is reabsorbed
98%
49
Filtrate components
Water, glucose, amino acids, nitrogenous waste.
50
Glomerular filtration rate
Rate at which you make filtrate
51
Anuria
Condition of not making enough urine
52
Average glomerular filtration rate
120-125mL per minute
53
2 ways to control filtration?
Control vasomotor regulation, and or mesangial cells
54
Symport
When 2 substances transport together through cells
55
Antiport
When 2 substances transport opposite of each other through a cell
56
Which tubes function in obligatory water reabsorption
PCT AND DCT
57
Which tubule functions in facultative water reabsorption
Collecting duct
58
What is the difference between facultative reabsorption and obligatory
Facultative is adjustable while obligatory is not
59
Transport maxium
The concept related to renal threshold
60
Countercurrent multiplier
The multiplying of the solute concentration of filtrate within the tubule
61
How is countercurrent multiplier’s effect diluted
Active transport, removing solutes
62
What is the osmolality of blood in glomerulus
300 mOsm
63
Function of vasa recta
Maintain salty gradient in medulla
64
What is the function of urea recycling? Like why do we do it
Last ditch effort to conserve water
65
Diuretics
Chemical that enhances urinary output