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GCSE Biology 🍃 > Excretion in Humans > Flashcards

Excretion in Humans Flashcards

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1
Q

Where are toxins and waste products filtered from?

A

The kidney

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2
Q

How are toxins and waste products taken out of the body?

A

Via urine

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3
Q

What is excretion?

A

The process by which an organism eliminates the waste products of their chemical activities and any substances in excess

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4
Q

What give carbon dioxide a waste product of?

A

Respiration

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5
Q

Where is urea produced and what is it’s role?

A

Urea is produced by liver cells to breakdown excess amino acids

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6
Q

What does the liver convert amino acids and glucose into?

A

Proteins and glycogen

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7
Q

What takes cleaned blood away from the kidneys?

A

The renal vein

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8
Q

What carries urine to the bladder?

A

The ureter

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9
Q

What stores urine?

A

The bladder

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10
Q

What brings waste blood to the kidneys?

A

The renal artery

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11
Q

What carries urine out of the body?

A

The urethra

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12
Q

What removes chemicals from the blood?

A

The kidneys

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13
Q

What is the cortex?

A

The brown, outer layer of a kidney

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14
Q

What is a medulla?

A

The red/brown inner region of a kidney

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15
Q

What is a nephron?

A

Part of the medulla that helps filter out waste products in the body

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16
Q

How many nephrons are there in the body?

A

Thousands!

17
Q

Where does ultra filtration take place?

A

In the glomerus and Bowmans capsule

18
Q

What is ultra filtration?

A

Everything small enough forced through the Bowmans capsule (Water, glucose, salts, urea and amino acids. NOT blood cells or proteins

19
Q

What is the Bowman’s capsule?

A

A large bundle of blood vessels

20
Q

What order does the waste products flow in starting with the glomerus and ending with the collecting duct?

A

Glomerus, Bowman’s capsule, Proximal convoluted tubule, Loop of Henle, Distal convoluted tubule, collecting duct

21
Q

What is the fluid in the collecting duct?

A

Urine

22
Q

What is kidney dialysis?

A

The separation of 2 solutions by a semi permeable membrane which cleans blood like a kidney woulkd

23
Q

What are the positives and negatives of kidney dialysis?

A

P - Cheaper than transplant

N - Frequent visits to hospital to clean blood

24
Q

What are the positives and negatives of a kidney transplant?

A

P - Saves you time instead of having to go to the hospital

N - long waiting lists, finding a suitable donor, expensive

GCSE Biology 🍃 (7 decks)

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