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Blood is 6 times thicker than water and each drop of blood contains about 250 million cells.

Ans – Blood, the only fluid connective tissue which plays a major role in the transportation of nutrients, respiratory gases, hormones, in maintaining and regulation of body temperature, pH, and other thermo-regulation processes. Blood is 6 times thicker than water and each drop of blood contains about 250 million cells.

Q2. What is Human Body Made Up of? 

Ans – The human body is made up of different types of cells, tissues, organs, and other biological systems, which are involved in carrying out different types of specific functions essential for maintaining a healthy life.

The human body is made up of different types of cells, tissues, organs, and other biological systems, which are involved in carrying out different types of specific functions essential for maintaining a healthy life. The scientific study of the body’s structures along with its functions are termed as Human anatomy and physiology. Besides these structures and functions, there are numerous amazing facts about our body which we are all not aware of. Listed below are a few interesting facts about the Human Body.

Some of interesting facts about human body are as follows – Facts 1: Every living organism is composed of the cell. Among which, few are single-celled organisms, which includes bacteria and some are multicellular as they are composed of many cells, including humans, plants, animals, and birds. Facts 2: Blood, the only fluid connective tissue which plays a major role in the transportation of nutrients, respiratory gases, hormones, in maintaining and regulation of body temperature, pH, and other thermo-regulation processes. Blood is 6 times thicker than water and each drop of blood contains about 250 million cells. Facts 3: Prokaryotic and eukaryotic cells are two primary types of cells. These cells are differentiated based on the presence and absence of the definite nucleus. The prokaryotic cell was the first cell to have originated on Earth, later evolved the Eukaryotic cells. Facts 4: The longest cell in the Human body is the motor neuron, the feminine egg is the largest cell and the smallest cell is the male sperm cell. The longest bone is the thigh bone and the stapes or stirrup present in the middle ear is the smallest bone. The hardest bone is the jawbone. Skin is the largest organ and pineal gland is the smallest organ in our body. The human tongue is the strongest muscle and the external muscles of the eye are the fastest which are mainly involved in constantly moving, blinking and adjusting the positions of the eye. Facts 5: An average person breathes 20,000 times a day. The rate of breathing is faster in children and women compared to men. The deeper we breathe, the faster becomes the metabolism. Facts 6: Our appetite depends on our style of breathing. Slow breaths help in increasing our lifespan. It is always advised to breathe through our nose to avoid infections, tonsillitis, sore throats, and other disorders. Facts 7: Yawning helps us to inhale more oxygen into our lungs. We usually yawn as our brain sends a message to our sensory system when it senses the shortage of oxygen. Facts 8: In a day, blood totally travels about the distance of 19,312 kilometres and our heart pumps around 1.5 million barrels of blood in our lifetime, which can fill 200 train fuel tanks. Facts 9: Similarly to our fingerprints, every human has a unique tongue print. A human tongue can produce enough saliva, which can fill two swimming pool and it is considered as the strongest muscle in our body. Facts 10: Both the circulatory system and respiratory system are involved in carrying blood and the oxygen gas all over the body. The human heart beats 100,000 times per day and 30 million times a year. Facts 11: The human ears can hear sound in the frequency of 2,000 to 60,000 hertz and can distinguish between hundreds of thousands of different sounds. Facts 12: Cornea, the transparent front part of the eye is the only part with no blood supply and it gets oxygen directly from the air. Facts 13: A human circulatory system comprises more than one hundred thousand miles of blood vessels. The largest blood vessel is the aorta. On an average, there are 100,000 miles of blood vessels in an adult human body. Facts 14: The fingernails grow faster than toenails and the nail on the middle finger grows faster than the other fingernails. The middle fingernail grows faster than the other fingernails. Facts 15: A human being cannot breathe and swallow at the same time. But the new-born babies can breathe and swallow both at the same time for up to their 7 to 8 months. Facts 16: Human eyes and ears never stop growing because they are mainly composed of cartilage cells, which keeps on dividing along with the age. Human teeth are just as strong as shark’s teeth and about 99% of the total calcium content in the body is present in the teeth. Facts 17: The size of our nose and ears keep on growing along with our age, but the size of our eyes remains the same from birth. The size of our nose is equal to the size of our thumb finger and our ears grow a quarter of a millimetre per year. Facts 18: Lungs are an important part of the human respiratory system and the only organ in the human body that can float on water. According to the studies, a human nose can sense and distinguish between one trillion different types of smell or the odours. Facts 19: The total number of bacteria in our mouth is equal to the total number of people living on the planet Earth. These bacteria do not cause any harm, in turn, they protect us from harmful disease-causing organisms. Facts 20: The complete lifespan of a single hair follicle is about 3 to 7 years. The dark colour of a hair helps in finding the dense and a total number of hair follicles in our head.

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