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Biology Unit 3 > Excretory > Flashcards

Excretory Flashcards

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1
Q

What are the organs included in Excretory
And what they excrete

A

Large intestine : feces
Lungs : co2
Skin: sweat,salt,h2o,urea
Liver:breaks down toxin
Kidneys :filtration

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2
Q

Where is the kidney located

A

Below rib cage in either side of spine

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3
Q

What are the kidney hats

A

Adrenal glands which secretes hormones like adrenaline, cortisol

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4
Q

What is the function of kidney

A

Regulates filtration and transcription of blood and other substances

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5
Q

Where does filtration occur

A

Cortex of kidney packed with capillaries

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6
Q

What happens in the medulla

A

Reabsorption

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7
Q

Nephron

A

Functional part of kidney packed with cappilaries (tube)

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8
Q

What are the parts of nephron

A

Glumerulus
Loop of henle
Collective duct
Renal artery ( entrance)
Vein(exit)
Bowman’s
Capillaries
Distal tubule

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9
Q

How does filtration happen

A

Blood enters the glomerous then filtrate is dumped into nephron occurs in cortex of kidney then filtrate is stored in bowman’s capsule

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10
Q

How does reabsorption happen

A

Reabsorption happen as filtrate passes it mostly occurs in the medulla then in the proximal, loop, distal,

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11
Q

What gets absorbed in proximal

A

Nutrients and salts

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12
Q

Loop of Henley what gets reabsorbed

A

Goes to high salt concentration and water is absorbed

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13
Q

What is absorbed in the distal tubule

A

Salt to keep medulla salty

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14
Q

Why do kidney filter everything

A

To ensure unusual stuff is excreted

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15
Q

How does blood return to blood

A

Via renal vein

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16
Q

Where does remaining filtrate go

A

Turns into urine enters collective duct

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17
Q

What does kidney filter from blood

A

Filtrate

18
Q

What is in the filtrate that is excreted

A

Salt,h2o, urea ,

19
Q

What is reabsorbed in filtrate

A

Glucose , vitamins

20
Q

Which part of the kidney has more salt which has less

A

Medulla : salty
Cortex : less

21
Q

Function of excretion

A

Excretion of metabolic waste

22
Q

What is urea

A

A colourless odourless solid soluble in water

23
Q

Why is urea made

A

To prevent excess nitrogen

24
Q

Where is urea and how is it made

A

In the liver to mix ammonia with Co2

25
Q

What are the filtrate

A

Water, salt , urea

26
Q

What are reabsorbed

A

Glucose and vitamins

27
Q

Process of filtration in nephron

A

Blood enters glomerulus then filtrates from blood is dumped in the nephron then collects in the bowman’s capsule proceeding to proximal tubule

28
Q

Reabsorption process

A

Filtrate passes through medulla and these gets reabsorbed from each part

Proximal : nutrients/ salt
Loop of Henley: water diffused back after going to high salt concentration
Distal: salt is reabsorbed for medulla salt concentration

29
Q

Path of filtrate throughout nephron

A

Oxygen rich blood enters renal artery then to the glomerulus where filtrate is then collected in the bowman’s capsule separated from blood proceeds to the proximal for Reabsorption of water, nutrients and ions occur then to the loop of Henley where h2 o is diffused back then to the distal tubule to be collected in the collecting duct to be excreted through pelvis out the urethra

30
Q

Medulla function

A

Water absorption and blood pH ( loop of Henley )

31
Q

Cortex

A

( proximal tubule , glomerulus ) blood filtration

32
Q

Ureter

A

Transport of urine

33
Q

Bladder

A

Urine temporary storage

34
Q

Renal vein

A

De oxygenated blood exit and filtered back to heart through the vena cava

35
Q

Renal artery

A

Unfiltered. Oxygen rich blood entrance to kidney from aorta

36
Q

Why does kidney filter blood from artery

A

To remove excess waste while maintaining blood pH

37
Q

Why do kidneys filter out more than they need to reabsorbed certain compounds

A

To ensure homeostasis in fluid, acids and blood pressure enough to keep vital substances and get rid of waste

38
Q

3 ways kidneys help with homeostasis

A

Remove waste
Regulation of blood ph
Blood volume

39
Q

6 materials filtered from blood

A

Urea, water, amino acids,

40
Q

How are kidney activities controlled

A
41
Q

Dialysis

A

Process of filtration through a machine

Biology Unit 3 (3 decks)

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