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.

Explainer

Art

Culture

Identity

2 August 2024

5 min read

Controversial art: can the critic love their neighbour?

What to do when confronted with contentious culture.

Jonathan Evens

Jonathan is Team Rector for Wickford and Runwell. He is co-author of The Secret Chord, and writes on the arts.

Two people run though a darkened art gallery towards a body lying amongst photography paraphanalia

Audrey Tautou and Tom Hanks, The Da Vinci Code.

Sony Pictures.

In the wake of the controversy over the Olympic opening ceremony, based as it was on a fundamental misunderstanding on the part of Christians as to what was being portrayed, you may be perplexed or confused by the different ways Christians respond to controversial art or media portrayals that are perceived to be an attack on core Christian beliefs. If that is you, here are some thoughts as to why it is that Christians react in a range of different ways.

Our responses are always underpinned by depth of relationship with and commitment to Jesus, the one who has turned our lives upside down and filled us with his Spirit. Our sense of what it is that Jesus has done for us and what it is that relationship with Jesus means to us is the determinative factor affecting our response when we perceive the One we love and who loves us to have been maligned or mocked.

For some, we feel a need to stand with or defend Jesus whenever we perceive that he is under attack, and we have seen that instinctive response apparent in reactions to the Olympic opening ceremony. However, instinctive emotive responses run the risk of pre-empting more reasoned or reflective responses. That has certainly been the case here, as what many Christians perceived to have been a parody of the Last Supper was not actually that at all. Instead, the sequence was a portrayal of the feast of Dionysius, so had nothing to do with the Last Supper at all.

Christians, as here, are often too quick to make allegations of blasphemy without actually understanding what is being portrayed. I have, unfortunately, seen many similar examples within my lifetime. In the 1970’s and 80’s films like Monty Python’s Life of Brian and Martin Scorsese’s The Last Temptation of Christ resulted in thousands of Christians demonstrating outside cinemas, while Christian organisations, like the National Viewer’s and Listener’s Association headed by Mary Whitehouse, lobbied for those films to be banned.

God does not need human beings in order to be defended, particularly from perceived mockery.

However, interestingly, the release of The Da Vinci Code in 2006, although it dealt with similarly controversial material for Christians, did not result in mass protests. Instead, through seeker events, bible studies, websites and booklets, churches encouraged discussion of the issues raised by the film while clearly contesting the claims made about Christ and the Church.

The protests against such films often did not tally with the content of the films themselves and displayed a lack of understanding of them, their stories and meaning. As Richard Burridge, a former Dean of King’s College London, has said of Life of Brian, “those who called for the satire to be banned after its release in 1979 were ‘embarrassingly’ ill-informed and missed a major opportunity to promote the Christian message”. Life of Brian portrayed the followers of religions as unthinking and gullible and the response of Christians to that film reinforced that stereotype.

As a result, the Church had to learn again that the way to counter criticism is not to try to ban or censor it but to engage with it, understand it and accurately counter it. The Da Vinci Code events, bible studies, websites and the like that the Church used to counter the claims made in The Da Vinci Code featured reasoned arguments based on a real understanding of the issues raised, making use of genuine historical findings and opinion to counter those claims. These created a conversation with the wider community that was far more constructive than the kind of knee-jerk reactions we have seen to the opening ceremony of the Olympic Games.

Some of these knee-jerk reactions derive from a sense, in the West, that the dominant place Christianity used to have in society has been eroded leading some to think that our values and beliefs are under threat. This reveals an underlying insecurity which it is surprising to find in those who believe that God is all-powerful and in control of human history. God does not need human beings in order to be defended, particularly from perceived mockery.

Indeed, the reverse is the case, as, in Jesus, God deliberately entered human history to experience human life in all its facets, including real mockery and suffering, to show that such experiences are not defining and can be transcended through love and sacrifice. Such a God does not require those who follow to become defensive themselves when the path of mockery is actually the path to resurrection and renewal.

Cultural comment is as much about love for neighbour as any other aspect of Christian life.

So, what might a more constructive and productive response to controversies entail? Taking time to reflect and to understand what it is we are experiencing would be a much better place to start. The Olympic opening ceremony was a celebration of French culture, which highlighted images from the Louvre in particular. Leonardo da Vinci’s ‘Last Supper’ is in Italy and does not include a blue Dionysius. With some reflection and investigation, that would quickly have become apparent. Similarly, the scene to which Christians objected in The Last Temptation of Christ was just what it said on the tin, the last temptation Jesus faced. It was a temptation that he rejected, and the film was all the more powerful as a depiction of the incarnation as a result.

Then, we can see that what the Christ who embraced human life through the incarnation calls us to is a charitable hermeneutic (how we interpret), when it comes to receiving, understanding and commenting on the culture around us. Cultural comment is as much about love for neighbour as any other aspect of Christian life. Our charitable hermeneutic was summed up for us by St Paul when he wrote of going through life looking for “whatever is true, whatever is honourable, whatever is just, whatever is pure, whatever is pleasing, whatever is commendable”. Sister Wendy Beckett, the cultural commentator who most recently has best exemplified this charitable hermeneutic achieving huge popularity as a result, wrote of “a beautiful secret … that makes all things luminous … a precious gift in this confused and violent world”.

With the beautiful secret of a charitable hermeneutic, we might, perhaps, look again at the Olympic opening ceremony and appreciate the intent of Thomas Jolly, the artistic director behind the ceremony, when he said that religious subversion had never been his intention: “We wanted to talk about diversity. Diversity means being together. We wanted to include everyone, as simple as that.”