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Liver > Excretion > Flashcards

Excretion Flashcards

1
Q

What is excretion?

A

The removal of waste products of metabolism from the body.

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2
Q

What is excretion?

A

The removal of waste products of metabolism from the body.

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3
Q

What are the 3 main ways products in the body?

A

Urea
CO2
Bile Pigments

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4
Q

Where does urea come from and where is it excreted?

A

Urea comes from the liver- excess amino acuds

Excreted by the kidney

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5
Q

Where does CO2 come from and where is it excreted?

A

CO2 comes from all cells that respire aerobically

Excreted by the lungs

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6
Q

Where do bile pigments come from and where is it excreted?

A

Bile Pigments come from the liver- old RBCs

Excreted by the digestive system

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7
Q

What are the 2 main bike pigments?

A

Bilirubin
Biliverdin

-breakdown products of haemoglobin

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8
Q

What form is waste excreted by birds?

A

Uric acid

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9
Q

What form is waste excreted by fish?

A

Ammonia

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10
Q

What form is waste excreted by Insects?

A

Uric acid

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11
Q

What form is waste excreted by humans?

A

Urea

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12
Q

Why do birds excrete uric acid?

A

Uric acid requires less water so birds use less energy to fly

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13
Q

What blood vessels supply the liver with blood?

A

Hepatic Artery

Hepatic Portal Vein

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14
Q

What blood vessel carries blood away from the liver?

A

Hepatic Vein

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15
Q

What is special about the blood coming from the Hepatic Portal Vein?

A

Partly oxygenated and deoxygenated blood.

Need Hepatic Artery as not enough oxygenated blood in hepatic portal vein to support liver.

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16
Q

What is a liver cell called?

A

Lobule

17
Q

In a lubule where is the Hepatic Vein found?

A

In the centre

18
Q

Which way does bile flow in a lobule?

A

From centre of cell to branch of bile duct at edge of cell

19
Q

What is the structure of the Hepatic Portal Vein?

A

Thick wall
Large lumen
Round or oval shape

20
Q

What is the structure of the Hepatic Artery?

A

Thick wall
Small lumen
Round

21
Q

What is the structure of the bile duct?

A

Thin wall

Does not enter hepatic vein

22
Q

What is interlobular?

A

Bewtween lubules

23
Q

What is intralobular?

A

In lobule

Liver (2 decks)

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