Too much salt
March 24, 2013

toomuchsaltD: Can I have some salt on this?

Me: There’s already some on it.

D: I can’t taste it. Can I have some more on?

Me: A tiny bit. Too much salt is bad for your heart.

D: I know!… Mum?

Me: Yes?

D: What happens to your heart if you have too much salt?

Me: Weeeell… Salt dries things up. You know when you eat salty food it makes you thirsty?

D: Yes.

Me: Well, if you eat lots of salt, then your body thinks it’s trying to dry up your insides and so it holds on to lots of water and keeps it in your body, so there’s less space for everything to move around. Your blood can’t travel around in the tubes so well, because the walls of the tubes get thicker to cope with all the salt, so the space in the tubes gets smaller. Your blood pressure goes up and your heart and kidneys have to work really, really hard and might not be able to work properly.

D: I know about when kidneys don’t work properly – Cooper, the dog, had a problem with his kidney and he wee’d all over the floor, but it wasn’t his fault – it was his kidney not working properly.

Me: Oh yes, his insides didn’t work very well did they? I don’t think that was too much salt though – I think it was just old age.
Sometimes, too much salt can affect your brain too – high blood pressure and thin tubes sometimes means that blood can’t travel up to your brain so well.

D: So your brain doesn’t work properly?

Me: That could be – yes. If your brain doesn’t get as much oxygen as it needs, because not enough blood is getting there with the oxygen in, then your brain won’t work properly.

D: Oh! I hope my brain won’t break because I had too much salt!

Me: You’ll be fine. But you shouldn’t eat too much salt on things – just a teeny tiny pinch will do.

School dinner and brain surgery
January 14, 2013

dinnernote

D: I LOVE that type of fish we had at school today!

Me: What sort of fish was it?

D: You know the fish that’s crusty?

Me: Was it battered?

D: No, you know the one that’s a flattened circle?

Me: I think the menu said it was fish in batter. Was the fish inside, with a crunchy coat on it?

D: Yes – it was orange outside. How do they make it? Do they kill the fish, then make it into the crunchy shapes, then chop the tail off?

Me: Something like that!

D: Do they suck the blood out first?

Me: Yes, there’s no blood in it when you eat it.

D: And they take the bones out, and the inside bits out… Do they take the brain out?

Me: Yes.

D: Yuck! I’d like to see that. I’d like to try taking a brain out, just to see. I’d have to wear gloves though, because it would be all yucky. Not the gloves I wear outside though – that would be silly – gloves like in my science kit.

Tired eyes
October 26, 2012

D: You know when I had sleepy eyes in Crete? Well I know what they’re called now – Misha told me. They’re blood streams.

Me: Do you mean ‘blood shot’ eyes?

D: No, not ‘blood shot’, ‘blood STREAMS’! When you’re really tired they come in your eyes to let you know that you’re really sleepy. Do you know why they’re called blood streams?

Me: Why?

D: Because they’re made out of blood and they look like little streams, so they’re called blood streams.

Human egg timer
September 29, 2012

D: Guess what? If you’re upside-down for too long blood comes out of your mouth.

Me: That’s not true – who told you that?

D: Misha told me it. So is he telling me lies?

Me: Well, he’s probably just mistaken. If you’re upside-down for a long time, blood will go to your head and your head will feel heavy. Then you’ll feel a bit dizzy when you’re the right way round again, but blood won’t come out of your mouth.

D: And then when you stand the right way round again, the blood will go back down to your feet?

Me: Yes, and you heart will help to keep it pumping around your body.

D: Oh yes – your heart has two halves and one half pumps the blood out through a tube.

Me: Did you remember that from your Human Body book?

D: No, I just knew it.

Bewitched
September 15, 2012

Mask – Sept 2012

D: It’s a witch mask I made at Vikki’s for you – there’s a coloured bit of the witch’s eye, with blood round it. The other eye is just BLOOD! There’s some sweets to eat [all over] and that’s a spider [left cheek]. They’re spikes on her nose.

Me: Charming.

Awesome machinery: the human body
August 1, 2012

D: My eyebrow is all scratchy and it hurts.
Me: Looks like you’ve got a midge bite – the wet weather’s brought lots of midges out.
D: What’s a midge bite?
Me: A midge is a type of fly that buzzes and bites – it lands on you and its bite is like a tiny injection – it sucks blood out of you, and makes you all itchy.
D: What does it DO with the blood?
Me: Nothing, it’s just a blood-sucker – it just flies around with your blood in it.
D: What will happen if ALL the flies come along and suck out ALL of my blood?
Me: That won’t happen – you’re way bigger than them and your body will know some blood has been taken and make some more.
D: HOW does it make more blood?
Me: It’s just clever like that…
D: Is there a machine that makes blood inside my body?
Me: Your body is a machine.
D: But that would make us robots… Am I a robot?

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