Measuring Human Body
The human body is a very complicated system consisting of millions of cells-organised uniquely and function dynamatically together.The complexites can be better understood when it is highligted. Anatomists find it useful to divide the human body into two systems: the skeleton, the muscles, the digestive system, the urinary system, the glandular system, the nervous system, and the skin.
Body Statistics
The body: has about 9.14m of long tube for food intake and excrete, a surface area of more than 9.29 sqm, or five times the area of the body's skin.The intensitive process, at about 2.54 cm per minute, 40.64 metric tonnes of food over the course of 70 years.
Skin: 2.72kg of skin cover the 1.85 sq.m of surface on an average adult.
DNA: Deoxyribonucliec acid, a nucliec acid, is the vital constituent of chromosomes, responsible for transmitting genetic information, in the form of genes, from parents to offsprings. Each human cell contains about 2m of DNA supercoiled on itself such that it fits within the cell nucleus less than 10 micrometers. DNA comprises 4 bases- adenine A, guanine-G, thymine-T, and cytosine C, a sugar and phosphoric acid, organised in a double helix format. within this format, A pairs only with T, and G only with C.
Bones in the body: Babies are born with over 300 bones. Many of them fuse together as we grow up- and we end up with 206. The longest bone: The 'femur' or the thigh bone (1/4 of your height). The smallest bone: The stapes or the stirrup-bone in the middle ear- few milimetres. The strongest bone: The shin bone,which connects the bone to the ankle. It can support 1,600 kg. More than half of the adult's bones are in the hands and feet. There are 27 bones in each hand and 26 in each foot- for a total of 106.
Human Brain: Consists of two parts: the brain located in the skull and the spinal cord located in the vertebral column.
Nerves 72.418km of nerves send impulses as rapidly as 360 km per hour. The fastest nerve impulse travels at 532 kmph.
The heart 27949.3 litres of blood are pumped through 96,000 km of blood vessels in a day. The hollow muscle pumps enough blood in an average lifetime to fill the fuel tanks of 56 moon rockets. Unlike other muscles, its contractions are involuntary, begining 4 weeks after conception, before nerve cells are formed, and continue to pulse even out of the body in saline solution. Muscle cells called myocytes generate a total electrical current of about 2 watts that commands the fibres to contract. Shortly after birth, those cells stop dividing.
The Blood There are about 96,000 km of blood vessels in our body. Blood comprises Plasma, RBC (red blood cells/erythrocytes), WBC (white blood cells/leukocytes) and Plateletes).
Plasma is made up of 90% water,7% proteins, and others like nutrients,salts, nitrogen waste, carbon-dioxide and hormones.
8,000,000 RBCs are produced in bone marrow everysecond constituting 54% of hemoglobin and their count ranges between 4-6 million per cu mm.
WBC count normally ranges between 4,500 to 11,000/cu mm.
Platelets are normally count between 15,000 to 300,000/cu mm.
The lungs Man breathes 13- 17 times a minute at rest and 80 during exercise. On an average we breathe 21600 times a day. We take in 295.261m litres in an average life span. The shock of birth causes the first breath. Musles contracts, opening the muscles of the chest and lovering the interior air pressure. The baby's opens in protest, air rushes in, and the new born baby begins to inhale about 60 times a minute, begining the cycle of strife and breatf. The adult human lungs have an interior area of 93m sq., which the external surface of the human body.
The liver Among some 1000 widely divergent functions ,the liver regulates hormonal balance, cholesterol, blood clotting and poisons. The liver is the only organ which can regenerate; if as much as two third is removed, a whole can grow back.
The alimentary system is a 9.14m long tube from mouth to anus that breaks particals tiny enough to pass through intestine into bloodstream. The nutrients are then routed to the largest gland in the body, the 1.36kg liver, to be refined into chemical and warehouse until demand soars.
Stomach: produces 2 litres of hydrochloric acid daily. 500,000 cells of stomach's inner walls are replaced every minute so that the acid does not damage the walls.
Muscles: There are 639 muscles which also account for the 40% of total body weight. The tota number of muscles in the body is over 630. It takes 17 muscles to smile and 42 muscles to stare. The largest muscles is the gluetus maximus or the buttock muscle. The smallest muscle is the stapadius muscle which controls the stapes.
The reptoductive organs: A man's testes manufacture more sperm per second(about 2000) than a woman's ovaries produce eggs in a life time (about 400).
Ear Our ears can detect 1500 differnt tones, 350db of loudness and trace the direction of a sound within 3 degree.
Tongue: The tongue contains more than 10,000 taste buds which are renewed weekly. It can distinguish 500 different tastes.
Nose can smell 2000-4000 different smells.
Eyes Humans can detect 10,000 colours with our eyes and a lighted candle 1.6km away. We spend 30 minutes every day being blind, the time taken for blinking. Adults blink every 4 to 6 seconds in an average.
Ribs Humans uaually have 12 sets of ribs, but 1 out of every 20 people is born with at least one extra.
The foot The average person will take one billion steps in his life.
Hair 1,25,000 hairs grow on the scalp, with 45 lost a day. Each follicle is capable of poducing 9.14m in a life time.
Other information: Largest organ in a body: The skin. An average man's skin if spread out, would occupy nearly 2 sq.m.
Most important organ: The pitutary gland. It controls growth of the endocrine glands.
Some organs that never rest: The heart and the kidney.
Some organs that can do without: Tonsils and the appendix.
Body's instant energy provider: The liver. It stores glycogen, which the body converts into glucose and burns to provide to provide energy.
Hardest substance of the body: The enamel of the teeth. By age 13, most people have 28 teeth (babies have 20). Around age 18, four more 'wisdom' teeth usully grow to make a full set of 32 teeth.
The lighter halfmoon shape at the base of fingernails actually has a name : lunula (loon-yuh-luh).
Body cells: Two billion body cells wear out are replaced everyday. The outermost layer of the skin is replaced every 15 to 30 days. People who live in high altitude have 2 litres more blood than those living in lower regions.
The human body is a very complicated system consisting of millions of cells-organised uniquely and function dynamatically together.The complexites can be better understood when it is highligted. Anatomists find it useful to divide the human body into two systems: the skeleton, the muscles, the digestive system, the urinary system, the glandular system, the nervous system, and the skin.
Body Statistics
The body: has about 9.14m of long tube for food intake and excrete, a surface area of more than 9.29 sqm, or five times the area of the body's skin.The intensitive process, at about 2.54 cm per minute, 40.64 metric tonnes of food over the course of 70 years.
Skin: 2.72kg of skin cover the 1.85 sq.m of surface on an average adult.
DNA: Deoxyribonucliec acid, a nucliec acid, is the vital constituent of chromosomes, responsible for transmitting genetic information, in the form of genes, from parents to offsprings. Each human cell contains about 2m of DNA supercoiled on itself such that it fits within the cell nucleus less than 10 micrometers. DNA comprises 4 bases- adenine A, guanine-G, thymine-T, and cytosine C, a sugar and phosphoric acid, organised in a double helix format. within this format, A pairs only with T, and G only with C.
Bones in the body: Babies are born with over 300 bones. Many of them fuse together as we grow up- and we end up with 206. The longest bone: The 'femur' or the thigh bone (1/4 of your height). The smallest bone: The stapes or the stirrup-bone in the middle ear- few milimetres. The strongest bone: The shin bone,which connects the bone to the ankle. It can support 1,600 kg. More than half of the adult's bones are in the hands and feet. There are 27 bones in each hand and 26 in each foot- for a total of 106.
Human Brain: Consists of two parts: the brain located in the skull and the spinal cord located in the vertebral column.
Nerves 72.418km of nerves send impulses as rapidly as 360 km per hour. The fastest nerve impulse travels at 532 kmph.
The heart 27949.3 litres of blood are pumped through 96,000 km of blood vessels in a day. The hollow muscle pumps enough blood in an average lifetime to fill the fuel tanks of 56 moon rockets. Unlike other muscles, its contractions are involuntary, begining 4 weeks after conception, before nerve cells are formed, and continue to pulse even out of the body in saline solution. Muscle cells called myocytes generate a total electrical current of about 2 watts that commands the fibres to contract. Shortly after birth, those cells stop dividing.
The Blood There are about 96,000 km of blood vessels in our body. Blood comprises Plasma, RBC (red blood cells/erythrocytes), WBC (white blood cells/leukocytes) and Plateletes).
Plasma is made up of 90% water,7% proteins, and others like nutrients,salts, nitrogen waste, carbon-dioxide and hormones.
8,000,000 RBCs are produced in bone marrow everysecond constituting 54% of hemoglobin and their count ranges between 4-6 million per cu mm.
WBC count normally ranges between 4,500 to 11,000/cu mm.
Platelets are normally count between 15,000 to 300,000/cu mm.
The lungs Man breathes 13- 17 times a minute at rest and 80 during exercise. On an average we breathe 21600 times a day. We take in 295.261m litres in an average life span. The shock of birth causes the first breath. Musles contracts, opening the muscles of the chest and lovering the interior air pressure. The baby's opens in protest, air rushes in, and the new born baby begins to inhale about 60 times a minute, begining the cycle of strife and breatf. The adult human lungs have an interior area of 93m sq., which the external surface of the human body.
The liver Among some 1000 widely divergent functions ,the liver regulates hormonal balance, cholesterol, blood clotting and poisons. The liver is the only organ which can regenerate; if as much as two third is removed, a whole can grow back.
The alimentary system is a 9.14m long tube from mouth to anus that breaks particals tiny enough to pass through intestine into bloodstream. The nutrients are then routed to the largest gland in the body, the 1.36kg liver, to be refined into chemical and warehouse until demand soars.
Stomach: produces 2 litres of hydrochloric acid daily. 500,000 cells of stomach's inner walls are replaced every minute so that the acid does not damage the walls.
Muscles: There are 639 muscles which also account for the 40% of total body weight. The tota number of muscles in the body is over 630. It takes 17 muscles to smile and 42 muscles to stare. The largest muscles is the gluetus maximus or the buttock muscle. The smallest muscle is the stapadius muscle which controls the stapes.
The reptoductive organs: A man's testes manufacture more sperm per second(about 2000) than a woman's ovaries produce eggs in a life time (about 400).
Ear Our ears can detect 1500 differnt tones, 350db of loudness and trace the direction of a sound within 3 degree.
Tongue: The tongue contains more than 10,000 taste buds which are renewed weekly. It can distinguish 500 different tastes.
Nose can smell 2000-4000 different smells.
Eyes Humans can detect 10,000 colours with our eyes and a lighted candle 1.6km away. We spend 30 minutes every day being blind, the time taken for blinking. Adults blink every 4 to 6 seconds in an average.
Ribs Humans uaually have 12 sets of ribs, but 1 out of every 20 people is born with at least one extra.
The foot The average person will take one billion steps in his life.
Hair 1,25,000 hairs grow on the scalp, with 45 lost a day. Each follicle is capable of poducing 9.14m in a life time.
Other information: Largest organ in a body: The skin. An average man's skin if spread out, would occupy nearly 2 sq.m.
Most important organ: The pitutary gland. It controls growth of the endocrine glands.
Some organs that never rest: The heart and the kidney.
Some organs that can do without: Tonsils and the appendix.
Body's instant energy provider: The liver. It stores glycogen, which the body converts into glucose and burns to provide to provide energy.
Hardest substance of the body: The enamel of the teeth. By age 13, most people have 28 teeth (babies have 20). Around age 18, four more 'wisdom' teeth usully grow to make a full set of 32 teeth.
The lighter halfmoon shape at the base of fingernails actually has a name : lunula (loon-yuh-luh).
Body cells: Two billion body cells wear out are replaced everyday. The outermost layer of the skin is replaced every 15 to 30 days. People who live in high altitude have 2 litres more blood than those living in lower regions.
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