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Artin Allahverdian 2H
Posts: 76
Joined: Fri Sep 28, 2018 12:26 am


Postby Artin Allahverdian 2H » Wed Nov 28, 2018 9:56 pm

Why is it that we can ingest vinegar, but if it is poured into a cut, it hurts?

Te Jung Yang 4K
Posts: 63
Joined: Fri Sep 28, 2018 12:18 am

Re: acids

Postby Te Jung Yang 4K » Wed Nov 28, 2018 10:35 pm

Some parts of our body are more flexible in terms of pH levels. The digestive tract can handle varying levels of pH, while the inside of the skin cannot.

Katelyn Phan 2A
Posts: 61
Joined: Fri Sep 28, 2018 12:23 am

Re: acids

Postby Katelyn Phan 2A » Thu Nov 29, 2018 1:49 pm

The digestive system contains buffers which will increase the pH of acids to a safe level. On the other hand when acids enter cuts they burn since cellular/atomic level destruction breakdown occurs. There are no protective buffers in these locations that can dilute the pH acidity level to neutral numbers.

John Kim Lec3Dis3L
Posts: 23
Joined: Fri Sep 28, 2018 12:17 am

Re: acids

Postby John Kim Lec3Dis3L » Thu Nov 29, 2018 2:02 pm

Another reason that our digestive system can handle such liquids is due to its protective coating of mucus. That is the reason that our stomach can handle containing acid and the cause of stomach ulcers (the mucus in a spot decreases, allowing the acid to partially corrode the stomach lining).

Harshita Talkad 4L
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

Re: acids

Postby Harshita Talkad 4L » Fri Nov 30, 2018 1:23 pm

Not all parts of the body can handle low pH levels the same way, which is why it hurts to get vinegar in a cut that is more sensitive to the acidity.

Posts: 60
Joined: Fri Sep 28, 2018 12:24 am

Re: acids

Postby Niveda_B_3I » Sun Dec 02, 2018 2:40 pm

The stomach and digestive system in general have a layer of protection. Your ski is that layer of protection for the rest of your body (like the outside) so when you have a cut, there's no protection.

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