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

Art

Awe and wonder

Culture

30 May 2025

5 min read

The late Pope Francis was right – Antoni Gaudi truly was God’s architect

Sanctity can indeed be found amongst scaffolding, as Gaudi’s Barcelona beauties amply demonstrate.

Jonathan Evens

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

Looking up at the front of Gaudi's cathedra; as the sun comes out from behind the spires.

Sagrada Familia cathedral, Barcelona.

Csaba Veres on Unsplash.

Barcelona is a magnet for tourists and art lovers because of the sense of exuberance and abundance created by the sinuous, sensuous curves and colours of Antoni Gaudí i Cornet’s amazing buildings. Whether we are encountering the shifting sea-like blues of the Casa Batlló, the abstract collage of the wave-like trencadis mosaic bench at Park Güell, the whirlpool-like undulations on the ceiling at Casa Milà, the columns in the Crypt of Colònia Güell which form a wood of trees, or the sunflower forms on the ceiling of the Sagrada Familia, Gaudí's work possesses an ecstatic sense of natural beauty. The Sagrada Familia, his still unfinished magnum opus, attracts over 4.5 million visitors a year, 85 per cent of whom come from outside Spain.

Known as ‘God’s Architect,’ Gaudí, in one of the last acts by the late Pope Francis, was declared Venerable, a step on the path to sainthood. He was recognised for the heroic virtues which encompass faith, hope, and charity, with Divine charity being paramount. The Vatican’s announcement noted that when Gaudí accepted the task of directing the project of the Basilica of the Sagrada Familia in 1883, his focus was “making art a hymn of praise to the Lord” and “he considered it his mission to make God known and bring people closer to Him”. Also noted was the humility of his death after being struck a tram on June 7, 1926. Unrecognized, the architect was taken to the Hospital de la Santa Creu, the city’s hospital for the poor and, after receiving the last sacraments, he died three days later, on June 10. Around 30,000 people then attended his funeral.

The Sagrada Familia is primarily experienced as a forest of columns through which light falls in glowing colours. As in medieval cathedrals the eye is drawn upwards towards the light and glory of God, here by means of slender trunk-like columns, which branch (for reasons of form and function) before the ceiling of the basilica, where natural and artificial light mingle in star-like shapes resembling sunflower heads. Lower down, the abstract stained glass of Joan Vila-Grau filters the blazing natural light of the Catalan sun through primary colours to create a sense of mystery even among the thousands of tourists crowding the space for the best camera angles.

Among the columnar forest and stained light (if one ignores the baldachin, which is an example of the gaudy Gaudí), there is an almost total absence of explicit Christian iconography, creating a special interior sense of spiritual space. Unlike a medieval cathedral where the Christian story is told inside in stained glass, Gaudí placed the narrative element on the exterior of the building to form a Bible written in stone through three facades: Nativity, Passion and Glory.

Much of Gaudí's work was marked by his big passions in life: architecture, nature and his Catholic faith. He integrated into his architecture a series of crafts in which he was skilled - ceramics, stained glass, wrought ironwork and carpentry - and introduced new techniques in the treatment of materials, such as trencadis, a special type of mosaic made of waste ceramic pieces.

After a few years under the influence of neo-Gothic art and Oriental techniques, Gaudí became part of the Modernista movement which was reaching its peak in the late 19th and early 20th centuries. His work transcended mainstream Modernism, culminating in an organic style inspired by nature. He was the great sculptor, utilising natural form in his work both for utilitarian and aesthetic reasons. He described nature as “the Great Book, always open, that we should force ourselves to read” and, as the art critic Robert Hughes recognised, thought that “everything structural or ornamental that an architect might imagine was already prefigured in natural form, in limestone grottoes or dry bones, in a beetle's shining wing case or the thrust of an ancient olive trunk.”

It is said that Gaudí’s aim at the Sagrada Familia was to bring heaven and earth together.

Although driven, single and celibate Gaudí was not an ascetic loner. He surrounded himself with work colleagues to whom he gave significant responsibility. He was also well aware that work on the Sagrada Familia could only be completed by the architects, sculptors and craftspeople who would follow his team and plans. Gaudí and his primary patron, Eusebi Güell, were men of great vision and vast ambition, resulting, among other accomplishments, in the Crypt of Colònia Güell, which consists only of the lower nave of what was intended to be a larger building. Their example suggests that to reach for the impossible and fail can nevertheless result in significant achievement.

The Crypt of Colònia Güell is a culminating point in Gaudi's work, where he included for the first time practically all of his architectural innovations. He said that without the large-scale experiments he undertook there, he would not have dared apply those same geometries to the Sagrada Familia. It is the place where, according to Japanese architect, Arata Isozaki, he “overcame all established limits regarding shapes.”

This church of Colònia Güell was blessed by the Bishop of Barcelona in 1915 and today functions both as parish church and tourist attraction. Like the Sagrada Familia, albeit on a smaller more intimate scale, its varied columns form a wood of trees. Flower-like, cross-shaped stained glass in primary colours creates a warmth to the space which is complemented by the red brick forming the walls and catenary arches of this cave-like space.

This is a warm, womb-like enclosure; intimate yet archetypal. It is real and usable communal space while also being of great architectural worth, innovation and beauty. Here the ‘heaven in ordinarie’ of the Eucharist is celebrated in the surround of natural forms recreated by man-made means. It is said that Gaudí’s aim at the Sagrada Familia was to bring heaven and earth together. It may well be that this aim is more fully realised in the earthy intimacy of the Colònia Güell’s wooded Crypt than in the soaring grandeur of the Sagrada Familia.

In welcoming the news that Gaudí had been declared Venerable, Cardinal Juan José Omella, Archbishop of Barcelona, said “It is a recognition not only of his architectural work but something more important.” He continued: “He is saying you... amid life's difficulties, amid work, amid pain, amid suffering, are destined to be saints.” Ultimately, he notes, “Gaudí’s life and work show us how beauty and holiness can transform the world” as they include the “recognition that sanctity can be found amid scaffolding, suffering, sublime obsession.”

Celebrate our 2nd birthday!

Since Spring 2023, our readers have enjoyed over 1,000 articles. All for free.
This is made possible through the generosity of our amazing community of supporters.

If you enjoy Seen & Unseen, would you consider making a gift towards our work?

Do so by joining Behind The Seen. Alongside other benefits, you’ll receive an extra fortnightly email from me sharing my reading and reflections on the ideas that are shaping our times.

Graham Tomlin
Editor-in-Chief

Join with us