Every living thing faces its own demise, end, and death. But for human beings, our body works wonders as to keep us alive up to the best of what our bodies can—in sickness, in old age, and tragedy. These wonders may not be fully expressed in few paragraphs nor in words, which everyone can easily understand, but the important thing about it is we’re a creation far greater, more astounding, and more breathtaking than any of man’s invention.
Skin
Its the foremost line of our body’s defense by serving as an effective barrier to lots of stress factors like microorganisms, dirt, and heat. With an acidic pH of less than 5, it makes an unfavourable environment for most bacteria. Hair, sebum, and sweat which are mainly found on the skin surface contain enzymes that destroy the integrity of pathogens. Through pores, the skin eliminates body heat, absorbs nutrients, and release metabolic by-products and toxins through sweat. And by a copious amount of blood supply through minute capillaries, clotting mechanisms makes an important role to prevent foreign matters gaining entry into the body through the wound.
Saliva
A significant amount of saliva aids ingested matters into a highly acidic environment of the stomach, which again makes a very terrible place for microorganisms to live in. Human saliva contains a significant amount of enzymes that can digest foods into their basic components which aid further digestive processes.
Respiratory Tract
The respiratory tract is a highly protected system in order to protect the entire body in return. This role starts from the nose as the nasal hair serve to trap large particles. On the other hand, hair-like projections called cilia takes care of the small particles and microbes by trapping and sending them to the throat, thereby allowing elimination through expulsion or swallowing, which involves a series of enzyme-based or immune system interactions.
Blood
The blood plays a very significant and dynamic role in keeping humans alive. One may not survive without an adequate amount of blood because it transports oxygen, nutrients, hormones, inflammatory factors, drugs, and a lot more. Through one of its component the white blood cells, it’s able to detect microorganisms and send signals to the other lines of body’s self defense, while the platelets and clotting factors maintain a safe and exclusive passageway for the circulatory system. They repair leaks and work more incredibly than Band-Aids.
These body components may not suffice to reveal everything as our body has a lot to tell, from the smallest part of the brain to the outermost tip of the toe. It doesn’t just contain a marvel of functioning cells and organs, which make a mass of muscles and bones a human being. The insurmountable amount of wonders it boast what makes a human body a miracle in a truest, tangible form.
