The human body

As well as believing in the reality of Forms, Plato believed in the immortality of the human soul.

The human body

From DNA to the atoms inside us, the human body is a scientific marvel. Corbis The appendix gets a bad press. It is usually treated as a body part that lost its function millions of years ago.

All it seems to do is occasionally get infected and cause appendicitis. Yet recently it has been discovered that the appendix is very useful to the bacteria that help your digestive system function.

So treat your appendix with respect. These vary in size from simple pairs of atoms, like an oxygen molecule, to complex organic structures. But the biggest molecule in nature resides in your body. A normal human cell has 23 pairs of chromosomes in its nucleus, each a single, very long, molecule of DNA.

Organization of the body

It has been suggested that it may have been to help early humans sweat more easily, or to make life harder for parasites such as lice and ticks, or even because our ancestors were partly aquatic.

But perhaps the most attractive idea is that early humans needed to co-operate more when they moved out of the trees into the savanna.

The human body systems Different organs can work together to perform a common function, like how the parts of your digestive system break down food. We refer to an integrated unit as an organ system. Aug 15,  · ‎Read reviews, compare customer ratings, see screenshots, and learn more about The Human Body by Tinybop. Download The Human Body by Tinybop and enjoy it /5(). We humans are pretty amazing. Find out what makes us tick, what makes us sick, and the incredible ways the human body works.

When animals are bred for co-operation, as we once did with wolves to produce dogs, they become more like their infants. In a fascinating year experiment starting in the s, Russian foxes were bred for docility.

Chemical composition of the body

Over the period, adult foxes become more and more like large cubs, spending more time playing, and developing drooping ears, floppy tails and patterned coats. Humans similarly have some characteristics of infantile apes — large heads, small mouths and, significantly here, finer body hair.

Alamy Goosepimples are a remnant of our evolutionary predecessors. They occur when tiny muscles around the base of each hair tense, pulling the hair more erect.

With a decent covering of fur, this would fluff up the coat, getting more air into it, making it a better insulator. Similarly we get the bristling feeling of our hair standing on end when we are scared or experience an emotive memory.

Many mammals fluff up their fur when threatened, to look bigger and so more dangerous. Humans used to have a similar defensive fluffing up of their body hairs, but once again, the effect is now ruined.

The human body

We still feel the sensation of hairs standing on end, but gain no visual bulk. Alamy If sci-fi movies were to be believed, terrible things would happen if your body were pushed from a spaceship without a suit. There would be some discomfort as the air inside the body expanded, but nothing like the exploding body parts Hollywood loves.The human body systems Different organs can work together to perform a common function, like how the parts of your digestive system break down food.

We refer to an integrated unit as an organ system. Aug 15,  · ‎Read reviews, compare customer ratings, see screenshots, and learn more about The Human Body by Tinybop. Download The Human Body by Tinybop and enjoy it /5(). A full-body human specimen injected with a polymer preservative stands on display at an exhibition called "Bodies." The show features 22 whole-body specimens and over organs and partial-body specimens, designed to give visitors an insight into the inner workings of the human body.

The human body is the structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organ systems. . This remarkable software makes the human body come alive with numerous high-quality videos that show many of the fascinating structures and processes in motion, including the nervous system, the five senses, blood circulation, respiration and nutrition, reproduction, the architecture of the body, the body's building blocks, and more/5(16).

Human Body The human body performs amazing feats every day, from sending signals rocketing through the brain at high speed to distributing oxygen over 1, miles (1, kilometers) of airways.

Human body - Wikipedia