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I also love the heart. This story is remarkable and shows how strong a little heart and big heart can be!

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Jack Stevens was born with Hypoplastic Left Heart Syndrome (HLSH)

Left side of his heart did not form properly and he underwent 9 surgeries

He then suffered a stroke and had to be resuscitated three times

Now is finally at home with his parents but will later need a heart transplant

A baby who only has half a heart has defied the odds after suffering a stroke and battling through four open heart surgeries.

Jack Stevens was born with Hypoplastic Left Heart Syndrome (HLHS) which means the left side of his heart did not form properly.

Jack, from Hartlepool, County Durham, has spent half of his life in hospital after having four open heart surgeries and five other operations.

He has also suffered a stroke and had to be resuscitated three times.

But made a miraculous recovery and recently had his feeding tube removed for the first time.

Now, at 15 months old, he is at home with his parents,

His father Chris Stevens, 30, said: 'He's been through so much in such a short space of time but he's doing brilliantly.

'We knew about his condition before he was born and he spent the first five months of his life in hospital.

'He had to have open heart surgery when he was just one-week-old and he's had three more since.

'Jack was only 4lbs 4oz when he was born and the condition has slowed his development.

'It was really difficult watching him lying in his hospital bed for so long surrounded by machines and tubes.

'But we knew it was best for him and he's battled through everything - he's a real fighter.'

At just one-week-old, Jack underwent three stages of the Norwood procedure - a surgery performed on the heart to improve blood flow.

He was eventually allowed home for the first time in April last year but returned back to Freeman Hospital, Newcastle, three months later after suffering a stroke.

He then endured a string of gruelling operations and is finally at home with father Chris, and mother, Ashton Hodge, 27, a charity worker.

He is now on the brink of taking his first steps and speaking for the first time.

Mr Stevens, an engineer, said: 'It's a lifelong condition so he will need a transplant at some point in his life but surgeons don't know when yet.

'He'll never be able to do any real physical activity.

'Jack had to be given up to 12 different medications up to four times a day but he only needs three different medications via a syringe at the moment.

'He's also had his feeding tube removed for the very first time last month which is fantastic.

'He's almost walking now and he mumbles all the time so hopefully he'll say his first word soon.

'We're both so proud of him - he's a very inspirational boy.'

Hypoplastic left heart syndrome is a condition where the left lower pumping chamber of the heart does not develop properly so is much smaller than usual.

The mitral valve between the left ventricle and the upper left filling chamber is often closed or very small.

In addition, the main blood vessel that carries blood from the heart to the rest of the body is also smaller than usual.

This means that the heart is unable to pump blood around the body effectively.

Hypoplastic left heart syndrome is a form of congenital heart disease - a term used to describe a problem with the heart's structure and function due to abnormal development before birth.

WHAT IS HYPOPLASTIC LEFT HEART SYNDROME?

Most are diagnosed before birth.

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Baby born with half a heart survives NINE operations

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Jack Stevens was born with Hypoplastic Left Heart Syndrome (HLSH) Left side of his heart did not form properly and he underwent 9 surgeries He then suffered a stroke and had to be resuscitated three times Now is finally at home with his parents but will later need a heart transplant A baby who only has half a heart has defied the odds after suffering a stroke and battling through four open heart surgeries.

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I don't have a favorite, I love them all! How cool is this picture showing our different systems?

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I love learning about the heart. It's cool that it keeps us alive, as long as we keep it healthy!

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The muscular system is unique. There are so many muscles that keep us moving on a daily basis and we don't even realize it! There are three different types of muscles and so many people have no idea about it!

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Program Overview: For more information: http://www.heatinc.ca/anatomy-and-physiology-series-the-muscular-system/ Product Code: CLP007 1. Give the four properties possessed by muscle tissue. 2. Differentiate between skeletal, smooth and cardiac muscle. 3. Describe how muscles work together to create movement. 4. Discuss the ways in which skeletal muscle fiber cells differ from other cells in the body.

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The heart is amazing to learn about. There is so much to it and it does it all on it's own!