Urinary Flashcards

1
Q

Function of the kidneys

A

Excretion
Regulation of bl pressure/volume
Regulation of electrolytes and pH

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2
Q

Excretion

A

Filter blood plasma an eliminate toxic substances

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3
Q

Kidney gross anatomy

A

Fibrous capsule
Hilum
Blood vessels
Cortex
Medulla
Renal pelvis
Ureter

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4
Q

Fibrous capsule

A

A cover made of fat and collagenous fibers that surrounds the organ

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5
Q

Hilum

A

Concave area of the kidney
Where the artery, vein, and pelvis enter/exit

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6
Q

Blood vessels

A

Renal artery
- oxygenated unfiltered blood
Renal vein
- deoxygenated filtered blood

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7
Q

Cortex

A

Outer functional layer of the kidney
Contains nephrons

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8
Q

Medulla

A

Inner functional layer of the kidney
Made up of renal pyramids

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9
Q

Renal pelvis

A

Enlarged chamber that is formed by all of the calyx coming together
Leads to the ureter

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10
Q

Ureter

A

Carries urine from the renal pelvis to the bladder

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11
Q

Calyx

A

Carry urine from the renal pyramids to the renal pelvis

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12
Q

Renal columns

A

Internal extensions of the renal cortex

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13
Q

The nephron

A

Found in the cortex
Filter blood and produce urine

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14
Q

Parts of a nephron

A

Renal corpuscle
Renal tubules

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15
Q

Renal corpuscle

A

Beginning of the nephron
Located in the cortex tissue

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16
Q

Parts of the renal corpuscle

A

Afferent arteriole
Glomerulus
Efferent arteriole
Glomerular capsule

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17
Q

Afferent arteriole

A

Brings in blood that needs to be filtered

18
Q

Glomerulus

A

Network of capillaries at the end of the Afferent arteriole
These capillaries that holes that allow small substances to leak out of the blood stream

19
Q

Efferent arteriole

A

Carries everything that didn’t leave the capillaries out of the glomerulus

20
Q

Glomerular capsule

A

Collection of cells that wrap around the glomerulus and contain everything that left the capillaries of the glomerulus

21
Q

Glomerular filtrate

A

The stuff that leaks out of the (glomerulus) capillaries

22
Q

Renal tubules

A

Further process the glomerular filtrate
Located in both the cortex and medulla

23
Q

Proximal convoluted tubule

A

Simple cuboidal epithelium with Microvilli
As filtrate passes through the body tries to reabsorb substances it needs

24
Q

Nephron loop

A

Thin segment
Thick segment

Descending loop
Ascending loop

25
Q

Thin segment of the nephron loop

A

Makes the u-turn btw ascending and descending limbs
Simple squamous epithelium for water reabsorption

26
Q

Thick segment of the nephron loop

A

Makes the straight portion of the ascending and descending limbs
Simple cuboidal epithelium for active transport

27
Q

Distal convoluted tubule

A

Cuboidal epithelial tissue with no Microvilli
End of the nephron

28
Q

Collecting duct

A

Where the material that has been processed is dumbed by the nephrons

29
Q

Peritubular capillaries

A

Come from the efferent arteriole
Surround the nephrons
Take back substances for the body

30
Q

Glomerular filtration

A

Fluid passes from the capillaries in glomerulus to the capsule via the filtration membrane

31
Q

Glomerular filtrate

A

The fluid that has been filtered from the blood plasma in the glomerulus and passes throughout the nephron

32
Q

Filtration membrane

A

A physical barrier between the fluid in the bloodstream and fluid outside the bloodstream

33
Q

Layers of the filtration membrane

A

Fenestrated endothelium of the capillary
Shared basement membrane
Filtration slits

34
Q

Fenestrated endothelium of capillary

A

Wall of the capillary that has holes in it

35
Q

Glomerular filtration through the filtration membrane

A

Particles in the blood are pushed out through these holes by an increase in blood pressure caused by a decrease in blood vessel size

36
Q

What is filtered in glomerular filtration?

A

Water
Electrolytes
Fatty acids
Amino acids
Nitrogenous waste
Vitamins

37
Q

Tubular reabsorption

A

The ability of blood to reabsorb material that it needs
PCT reabsorbs the majority of the glomerular filtrate and also water
Nephron loop and DCT absorb mostly water

38
Q

Tubular secretion
(Happens throughout the whole process)

A

Capillaries add additional substances to the tubules that did not make it out in the filtration process

39
Q

Water conservation

A

Last chance to reabsorb water
Primarily in the final collecting duct
Once the filtrate has entered the collecting duct it is considered urine

40
Q

Urine formation

A

Glomerulus filtration
Tubular reabsorption
Tubular secretion
Water conservation