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Awe and wonder
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6 min read

The heart of the matter

Heart doctor Michael Henein steps back to consider the unseen and unique wonders of the human body’s design.

Professor Michael Henein is a consultant cardiologist, and a Professor of Cardiology at Umea University, Sweden.

A model of a human heart on a short stand.
Photo by Jesse Orrico on Unsplash.

Shakespeare famously asked:

“What a piece of work is a man, how noble in reason, how
infinite in faculties, in form and moving how express and admirable, in action how like an angel, in apprehension how like a god! the beauty of the world, the paragon of animals—and yet, to me, what is this quintessence of dust?

Humans may be complex, capable of great heroism and deep depravity, yet it is worth stopping for a moment to look at the human body and mind to marvel in what we have become, and how we are made.

The visible design of the human body points out common features shared along with other members of the animal kingdom. Examples of these features are: two eyes, two ears, two nostrils, one mouth and four limbs, attached to a body and head. Detailed study of different seen parts of the body may, however, show some differences. For example, the presence of fingers and nails, hair distribution as well as a developed tail. While most members of the animal kingdom have teeth and a tongue, those two could also vary in their number and size, respectively, according to different species. Genetic investigations have shown that we humans share 99 % of our genes with animals, suggesting that our “earthly” component shares a common origin. Indeed, the twenty first century scientific findings match what is written in the Genesis story of creation, a story written over 3,500 years ago, well before genetic sciences came to light.

Creatures great and small

As for morphological differences between animal species, it is difficult to naively conclude why some are wild while others are man-friendly-even if the wild ones have different shapes, design, dietary habits, body size and life span.  Other important observed features of the members of the animal kingdom are that they are all born, they all age, then ultimately die.

If we are to look at the unseen features of the members of the animal kingdom, we can again identify similarities. For example, all have a gastrointestinal tract, a cardiovascular system, a reproductive system, a respiratory system, a urinary system and much more. While these systems may differ slightly between species, the overall structure and function achieve similar purposes.  For example, heart speed is faster in small animals like rats compared to big ones like elephants who have very slow hearts. Likewise, the respiratory system and the number of respiratory cycles per minute are significantly faster in running animals compared to the sedentary and slowly moving ones. Finally, the number of offspring also differs in different species, being just one at a time in big animals like elephants and horses, and many offspring in small animals like rabbits and mice. Such paradox between the number of offspring and animal size makes you think of the important determining role of the activity of those animals.

Unseen wonders

Now to turn to the rest of the animal kingdom and the unseen features of the human body. To start, let us look at the amazing functions of the human brain and its various functions. When humanity is sometimes described as the crown of creation, such a description is based on the superiority of human brain function and skills. Its sophisticated structure and how vital centres are created deep in the skull, to be protected from traumas, make you marvel. Also, the brain controls the different functions of the whole body, with its sensory and motor activities, various vital system functions including the lungs and the heart, all endocrine glands’ function, in addition to various receptors and centres that allow utmost precision and accuracy in everything we do. An example of this kind of precision is a doctor feeling a vein or an artery with the tip of a finger to insert a needle or a musician moving a finger a few millimetres while playing a violin, to produce the exact sound needed. Furthermore, the integrated function of human muscles, nerves and spinal cord is also amazing, let alone the synapsis between the nerve endings and muscle bundles, the chemicals secreted in them which allow electric stimulus transmission from the nervous system to achieve the motor function and desired movement.

The human brain also has the unique feature of storing knowledge. Of course, we should not ignore the importance of the training and programming ability of human brain. We learn how to drive a car, how to play games, how to study, how to operate safely on a sick patient.  Such acquired skills are quite limited in other members of the animal kingdom. Moreover, the human brain has the unique ability to invent, discover, improve and correct errors it identifies.

Another very unique feature of human brain is its ability to conduct speech, a feature of humans that is under-developed in other members of the animal kingdom. While most animals can make noise and sounds, only humans can articulate words, sentences and even sing very complex songs. This unique ability seems to be the underlying mechanism behind the development of languages which are based on the human ability to talk and transmit information and knowledge by words and phrases.

The unseen brain has allowed human life to develop over time, building skills and achievements from generation to generation. Millennia ago, humans lived in huts together with animals, and now they build houses and palaces to live in. Centuries ago, we used donkeys, horses and camels to travel but now we use cars, trains, ships and airplanes. Our ancestors burned wood and coal to cook and to warm but now we use electricity to do these.

When we look carefully at the unseen parts of the human body, we also realize that we cannot alter any of it, despite the scientific advances made over the years. We can understand what harms our body and take measures to avoid it. Out of the ability of our brain to discover and invent, we have now produced science-based means for curing various diseases. Consider how we can replace a dysfunctional heart valve or a mobility-limiting joint. These inventions have resulted in a better quality of life, alleviating of symptoms, even helping to avoid early death, in some cases such as heart disease and cancer. 

The heart of the matter

Another unseen source of life in humans is the heart. This fist-size organ is so complex in its structure and function. Recent scientific advances have enabled us to study heart function in milliseconds, hence the development of pacemaker treatments. They have also allowed clear imaging of the inside of the heart and the identification of pathologies, developments that guide practitioners to the optimum treatment of heart conditions. Recent discoveries have also allowed us to better understand how people develop coronary artery disease and how the pathology starts at the innermost layer of the arteries, particularly in individuals carrying significant risks for atherosclerosis including, smoking, high blood pressure, diabetes, high cholesterol and obesity. Amazingly, obesity has been shown to be the strongest underlying cause of other risk factors, hypertension, diabetes and hypercholesterolemia. So, nature cannot be blamed in many of these patients but our own patterns of behaviour. Science has shown that walking at least 5,000 steps each day, complying with the design of our body, reduces the likelihood of developing coronary artery disease by 15 per cent.

The unseen physiology of the rest of our body systems and the interaction between systems make us wonder how we are made.  A rise of our body temperature by one degree due to a bug infection affects all body systems from the brain to the heart. A virus which cannot be seen by the most powerful microscope can destroy our lungs and cause premature death, as was the case with COVID-19 and others.

Finally, human inventions in the form of powerful microscopes have allowed scientists to study the human cell, which is the smallest living component of our body.  Such small cells cannot be replicated in any factory in the twenty-first century, despite the vast scientific developments that surround us. You'll be surprised to learn how complicated and meticulously fine-tuned a human cell is and also how it functions, connects with other cells and other parts of the body. An example of this is the interaction between body minerals, calcium, sodium and potassium with heart and muscle individual cells. Such a function is critically controlled by many factors such as time, electric stimulation and pressure differences producing remarkably harmonious contractions and relaxation of the muscles without missing a beat.

Review
Awe and wonder
Culture
Theatre
5 min read

This Narnia play left me yearning to cheer on good

The Lion, The Witch and The Wardrobe is still relevant at 75.

Steve is news director of Article 18, a human rights organisation documenting Christian persecution in Iran.

 A play set shows a witch and lion on stage.
EMG Entertainment.

This article contains spoilers.  

It’s been 75 years since C.S. Lewis’s The Lion, The Witch and The Wardrobe was first published, and the story is still captivating audiences and even sparking fresh controversy. 

If you hadn’t heard the news, the role of the lion, Aslan, is rumoured to have been offered to Meryl Streep, a woman, for Greta Gerwig’s upcoming film, set to be released in time for Thanksgiving next year. 

I recently saw another adaption of the famous book - Adam Peck’s play - in a theatre in Torquay, as part of a 75th anniversary tour of the UK.  

And having previously read the book and watched two different film versions, I still found myself considering elements of the story I hadn’t previously, hidden depths I hadn’t noticed - even if these didn’t include Aslan’s gender. 

For those not familiar with the tale, it follows the journey of four children through the doors of a magic wardrobe, which transports them into a fantastical kingdom in which a lion reigns but a witch has held dominion for 100 years. 

Under the White Witch’s spell, there has been only winter for a century - “always winter and never Christmas”, as one famous line from the story goes. 

But now, thrust into this story in the fulfilment of a prophecy long foretold, four “sons of Adam and daughters of Eve” - boys and girls, to you and me - come as the lion king returns, and a new day dawns. 

The winter begins to thaw, Spring is in the air, and Father Christmas even shows up to shower the children with gifts. 

But the return of Aslan - and even Santa Claus - doesn’t signal the end of the story. There is still a battle to be fought; the witch still has power and even ensnares one of the children, Edmund, with the promise of all the Turkish delight he could wish for, and the title of a prince. 

It is at this moment - still early in the tale - that the battle between good and evil is clearly laid out, and the forces of light and darkness clash thenceforth. 

In the play, those enslaved by the witch are clad in black to emphasise the distinction, while much is made of the meaning of the name of the youngest child, Lucy: “bringer of light”. 

The imagery is abundantly clear, as it has ever been in Lewis’ Chronicles of Narnia, of which the The Lion, The Witch and The Wardrobe is the first and most famous of seven books. 

And the author, renowned for being an atheist who later became a Christian, leans heavily upon his newfound faith throughout the Narnian tales, and not least in the character of Aslan. 

Yet while you and I may frustratingly regularly let ourselves down, there is also something within us - is there not? - that ever yearns to cheer on the forces of good. 

At Easter, it is especially hard not to see in Aslan’s death and resurrection a striking similarity with the figure at the centre of the Christian faith. 

Indeed, it was this moment of greatest sacrifice - for the “traitor”, Edmund - that most struck me this time around, even though I already knew the story so well. 

At church the following day, as I took Communion, I was still reflecting on Aslan’s sacrifice and wondering whether Edmund more closely resembles the average Christian - myself included - than the older, nobler brother, Peter, in whom most of us would prefer to see our likeness. 

My mind returned to a moment in the theatre that had humbled me, when the lady sitting in front of us handed me £20 to treat my children for being “so good”, having at the interval made me bristle by asking them to sit quietly and stop kicking her chair. 

“Fair enough?” I hear you suggest. Well, perhaps, but I didn’t think it until that humbling moment after the curtain had closed. 

My son later told me he hadn’t thought the lady had been unkind, which again got me thinking about my own imperfections and need to be more childlike. 

Yet while you and I may frustratingly regularly let ourselves down, there is also something within us - is there not? - that ever yearns to cheer on the forces of good. 

I doubt many audience members were rooting for the witch, while I suspect most can also understand the need to “beware the witch”, as one song from the play puts it 

Another biblical parallel is the fulfilment of a prophecy long foretold, while both the Bible and The Lion, The Witch and The Wardrobe highlight the special significance of someone innocent dying to save the guilty. 

There is even a clear reference at the very start of the book and play to one of Lewis’ most famous pieces of theology, when the professor in whose wardrobe the children later get lost asks them a question as they consider whether or not to believe Lucy about the magical kingdom that she first glimpsed. 

She’s either lying, mad or telling the truth, the professor says, in much the same way that Lewis says of Jesus Christ’s own central claim: he’s either “mad, bad or God”. 

As for the success of the play, as someone who no longer lives in London, I was certainly impressed by this West End product. 

The scene changes are creative, aided by music, dance and possibly even a trapdoor - my children and I had different opinions on how the magical disappearances of certain characters were achieved. Maybe it truly was magic. 

There’s also the nice touch of the play starting even before it officially begins, through the twinkling of a soldier’s fingers upon the keys of a piano while the audience take their seats - perhaps to help us turn our minds from a sunny day in the English Riviera to dreary London at the time of the Blitz. 

So, do go and see the play if you get the opportunity - it’ll do you good and make you think, whether or not you choose to consider if the lion is male or female.