B3.3.3 - Maintaining Water Balance Flashcards

1
Q

How do water and salts enter your body?

A

Consumption, respiration (only water)

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2
Q

How are water and salts lost from your body?

A

Sweating / Urine, Exhaling (only water)

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3
Q

What is the removal of waste products called?

A

Excretion

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4
Q

What will happen if there is too much water in your blood plasma?

A

The water will move into your blood cells and cause them to burst (lysis)

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5
Q

What will happen if there is too little water in your blood plasma?

A

The water will diffuse from your cells into your blood plasma and cause your blood cells to shrink

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6
Q

What is urine?

A

A solution containing water, urea and other waste substances

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7
Q

Why must your body remove urea?

A

It is toxic

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8
Q

How is urine produced?

A

Your kidneys filter urea from out of your blood and produces urine constantly

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9
Q

Where is urine stored until you need to urinate?

A

Bladder

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10
Q

What is the ureter?

A

The tube which urine travels through from the kidney to the bladder

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11
Q

What is the urethra?

A

The tube through which urine passes out of your body

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12
Q

What does the renal artery do?

A

Brings blood containing urea and other substances into the kidney

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13
Q

Why can blood cells not go into the tubes to the kidney?

A

They are too large

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14
Q

What is selective reabsorption?

A

The process of kidneys filtering back any useful substances into the blood

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15
Q

How do kidneys balance the amount of wateryou take in with the amount you lose through sweating and exhaling?

A

It alters the amount of urine you produce (if you have little water, it will produce little urine, while if you have lots of water, it will produce lots of urine)

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16
Q

If your urine is concentrated, what can you assume about the amount of water you have?

A

Not enough water

17
Q

If your urine is almost colourless and diluted, what can you assume about the amount of water you have?

A

Too much water or a lot