Article

Awe and wonder

Comment

7 September 2023

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.

Michael Henein

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.

Article

Attention

Culture

14 February 2025

5 min read

Dispatches from the battlefield of imagination

The Age of Intellect has given way to the Age of Imagination.

Theodore Brun

Theodore is author of the historical fiction series The Wanderer Chronicles.

A collage image shows a person holding their head, with a wash of warm colours over the scene.

Jr Korpa on Unsplash

Twenty years ago today, I crossed the threshold of the Christian faith. It was a baptism of fire in a more literal and mystical sense than I care to describe (or indeed would be able to). And unlike many, I really can point to a day and a time and a place.

That night, perhaps unlike CS Lewis, I was not quite “the most dejected and reluctant convert in all England.” But I was certainly the most bewildered. ‘What have I let myself in for?’ I wondered as I walked away from that church on a dark, wet January night. I was certain that in crossing that threshold I had entered a new world. Even if it was true, as I believed – or as I now knew - I sensed that it was dangerous too. There was a wildness to what I had just witnessed that was both thrilling and disconcerting. And yet, after that encounter, I could no more have turned away from what I had discovered than stop the world turning. As the mathematician Blaise Pascal discovered in his own ‘night of fire’ – “certitude, certitude!” is a very precious gift, and one worth holding on to.

Twenty years later, the landscape of faith in this country looks very different to the one in which I stumbled my way over the line. (Or through the back of the wardrobe might be a better metaphor.)

Back then, in 2005, the War on Terror was raging. If religion was discussed at all, it was generally reckoned a pretty rotten sort of institution. A regrettable historical hangover, an inheritance bequeathed to us by our more credulous ancestors of which we were doing well to divest ourselves, albeit too slowly for some. In this brave, new secular world, it was an increasingly commonplace view that religion ruined everything; beside which, it wasn’t true anyway.

These were the days when a certain form of atheism was ebullient and on the march. The Four Horsemen of Dawkins, Hitchens, Dennett and Harris held the cultural conch for a time, and they weren’t letting go. The God Delusion came out in October 2006, quickly followed by God Is Not Great in early 2007. Religion (not sin) was the root of all evil. Reason^TMwas the exclusive intellectual property of the unreligious mind, untainted as it was by visions of that laughably silly Sky-Fairy in the heavens. The battlefield of apologetics was a much-contested landscape at the time. Truth was the prize - which both sides could at least agree upon - and many a debating hall was filled to bursting to watch each side’s sharpest minds slug it out.

God only knows how in such an intellectual atmosphere, I survived the shelling and carried through to the other side. But it’s telling that I had as my guide through the intellectual carnage, not voices of that age, but rather voices from further back in time. My old friend, CS Lewis, but also GK Chesterton, St Augustine, Dostoyevksy, and the potent words of the gospels to which they led me. Like wily old corporals, they saw me safe across No Man’s Land.

Even if I made it through, there’s no doubt it was the secularists who gained the cultural ground back then. That their intellectual case was unsound, it didn’t matter. Their propaganda was better – it was what people wanted to hear – and so Christianity was shoved out of the public square.

And now, two decades on, the war has moved into a very different theatre of operations. The Age of the Intellect has given way to the Age of Imagination as, unwittingly, the dry vacuum of secularism has sucked in contending spirits of another kind.

These days proponents and adversaries of the Christian faith jostle not in the dusty debating halls of our great universities, but on the battlefield of cultural consumption. Its topography formed of the movies we watch, the streaming channels we look at, the podcasts, music and media we endlessly gulp down.

Truth itself is no longer the prize, since the logical outworking of atheism’s ascendancy was to get what perhaps its proponents never bargained for: a post-truth age. What matters now is not so much what you believe, as what you attend to. The words and images which you consume. (Or which consume you.)

Walk the streets of any city and witness every passer-by glued to the screen nestled in their hand. Earphones clamped over their head. Distraction, saturation, enchantment: a cacophony of sound, a barrage of images overrunning the imagination to the point of madness. Until we have forgotten what it is like to sit patiently in silence with a still and empty mind. What it’s like to observe the world around us, to be available for the people around us.

But with what do we fill our imaginations now – that is the question? There lies the battle.

And so we find ourselves now moving through a world in which our capacity to create and consume is loaded with inestimably high stakes. It harkens back to Dostoyevsky’s famous line in The Brothers Karamazov: “The awful thing is that beauty is mysterious as well as terrible. God and the devil are fighting there and the battlefield is the heart of man.”

He’s right. Although the heart, the mind, the imagination cannot in any true sense be de-coupled from one another. (Is ‘soul’ a more encompassing word?)

And yet, of the two, the truly subversive combatant is God and not the devil. (Consider the Cross: the most subversive act in all reality.) It is God who is the invader here after all. He is the one taking back ground. His weapons are Truth, Beauty and Goodness. On the face of it, these are mild, even benign, abstractions. And yet in each is wrapped a potency as explosive as dynamite. Because with them, the spells that hold our imaginations captive can be broken. In an unguarded moment, He can slip through the enemy lines.

Witness the ear of culture’s recent harkening to the ancient truths and wisdom of our Judeo-Christian heritage. Nick Cave sings of a “Wild God” and to everyone’s surprise, people are starting to listen again. But he’s not the only one.

The inescapable wildness of God is that He cannot be contained; if His will is to break through, then He cannot be held back. As Mr. Beaver said of the lion Aslan, in answer to the fear: “Is he safe?”

“Who said anything about safe? ’Course, he isn’t safe. But he is good.”

As little image-bearers of this Creator, indeed as little creators in our turn, our creativity teeters on a knife-edge – it always has. An edge sharp enough to cleave heaven from hell. We’d do well to remember that. And that, being image-bearers of this wild God, no wonder we have a wildness of our own.

Yep. Twenty years has already been one heck of an adventure. But I suspect it has only just begun.

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