The urinary system does a lot of jobs to help our bodies filter out waste. Professor Hallux thinks his Biofiltration Extrapolator might be an improvement.  But can it do everything our urinary system does?

There are around 200 different types of cells in a human body, all with different jobs to do.  Professor Hallux thinks he’s designed a better solution that can do all the jobs – but what jobs are they?

Professor Hallux has decided that his new mobile phone is so clever, it would do a great job as a human brain.  But what jobs does a brain do anyway?

Muscles do a number of really important jobs in our bodies. But Professor Hallux thinks he can invent an improved set of muscles.  But will they do all the jobs that muscles have to do?  And what are those jobs anyway?

Skin does a lot of jobs – keeping our bodies together, protecting us and helping keep cool.  Professor Hallux thinks he can jazz up the body and that leopard print wrapping paper might be just the job.  Although will it do all the jobs …

Professor Hallux has a crack at making a new and improved digestive system.  There is certainly a lot to chew on, as the Professor learns more about the jobs this important system does.