Slide 1 : With Dr. Aman Biswas Explore
the
Human Body
Series 1
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Biology Problems
UGC/CSIR NET Life Sciences
PMT
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Advance Program
Civil Services
Entrance to Biotechnology and Post graduate Sciences
Amazing!!! : Amazing!!! Except for your brain cells, 50,000,000 of the cells in your body will have died and been replaced with others, all while you have been reading this sentence.
Our heart……. beats : Our heart……. beats About 100,000 times in one day
Or
About 40,000,000 times a year.
Slide 5 : In one hour the heart works hard enough to produce enough energy to raise almost one ton of weight one yard from the ground
The average human body contains enough Sulfur : The average human body contains enough Sulfur to kill all fleas on an average dog
The average human body contains enough Fat : to make 7 bars of soap The average human body contains enough Fat =
The average human body contains enough Potassium : to fire a toy cannon The average human body contains enough Potassium
The average human body contains enough Carbon : to make 900 pencils The average human body contains enough Carbon
The average human body contains enough Phosphorus : to make 2,200 match heads The average human body contains enough Phosphorus
The average human body contains enough and enough water : to fill a ten gallon tank The average human body contains enough and enough water
Do you know how many breaths do we take during our lifetime? : Do you know how many breaths do we take during our lifetime? About 600 million
Components of Human machine : Components of Human machine Integumentary Skin covers our body and helps in protection and Communication
Integumentary : Integumentary there are four yards of nerve fibers,
600 pain sensors,
1300 nerve cells,
9000 nerve endings,
36 heat sensors,
75 pressure sensors,
100 sweat glands,
3 million cells,
3 yards of blood vessels. What would you find in one square inch of skin?
Slide 15 : The area of the typical skin of an adult is about 1.7 square meters
Skin is body’s heaviest single part or organ about kgs. 11
Slide 16 : Every four weeks makes you new
As outer skin is totally replaced four weeks later
Slide 17 : Healthy skin can have 5000 bacteria per square cm on each arm and 5 million in arm pits
We have more hair than gorilla or chimp 20 million in total : We have more hair than gorilla or chimp 20 million in total
Our hair are amazingly strong with the tensile strength greater than steel wire of same thickness. : Our hair are amazingly strong with the tensile strength greater than steel wire of same thickness.
Each hair grows about 5 inches every year : Each hair grows about 5 inches every year
Slide 21 : Approximate number of body cells.. 70 x 1015
Slide 22 : Total three million sudoriferous glands producing one third of litre of sweat daily.
Hot summer day one can release 2-3 litres of sweat
Slide 23 : The Pacinian corpuscles in the skin are gigantic receptors (almost 1 mm long) consisting of concentric layers like onion-scales in the microscope.
There is a single axon in the axis of each corpuscle.
Pacinian and Meissner corpuscles are rapidly adapting (dynamic) touch velocity detectors in glabrous skin.
There are about 3 million nocireceptors.
Every minute, 40,000 dead skin cells fall from your body. 70% of the dust in your home consists of shed human skin : Every minute, 40,000 dead skin cells fall from your body. 70% of the dust in your home consists of shed human skin
Components of Human machine : Components of Human machine
Digestive system : Digestive system Your body makes about 1 litre of saliva per day
You get a new stomach lining every 3 days : You get a new stomach lining every 3 days
Slide 28 : Your large intestine takes your undigested food paste and turns it into solid waste by removing the water.
An adult’s stomach can hold approximately 1.5 litres of material
Slide 29 : In the mouth, food is either cooled or warmed to a more suitable temperature
Largest gland About 1.5 kg Skin is the Police Inspector of our body : Largest gland About 1.5 kg Skin is the Police Inspector of our body Name the police inspector of our digestive tract
Slide 31 : Muscles contract in waves to move the food down the oesophagus.
This means that food would get to a person's stomach, even if they were standing on their head
Slide 32 : An adult human has about 9000 taste buds
Slide 33 : Why are young children so vigorous in reacting to strong tastes? As we grow older the taste buds are lost.
Slide 34 : Vermiform appendix
Thought to be vestigial
Not involved in cellulose digestion What is called intestinal tonsil in man ?
Slide 35 : Gastric lipase is active in infants and capable of hydrolysing triglycerols of short and longer chain length.
Components of Human machine : Components of Human machine
Slide 37 : The total length of your circulatory system stretches an amazing 60,000 miles.
That is more than twice the
distance around the Earth.
Slide 38 : Blood is a liquid organ
Capillaries are so small that red blood cells can only travel through them in single file : Capillaries are so small that red blood cells can only travel through them in single file
Slide 40 : The cornea
The outermost layer of the eye
Only living tissue in the human body without blood vessels
Receives nutrients from tears and from the aqueous humor.
Slide 41 : The aorta, the largest artery in the body, is almost the diameter of a garden hosepipe
Capillaries, on the other hand, are so small that it takes ten of them to equal the thickness of a human hair : Capillaries, on the other hand, are so small that it takes ten of them to equal the thickness of a human hair
Your body has about 5.6 liters (6 quarts) of blood : Your body has about 5.6 liters (6 quarts) of blood
This 5.6 liters of blood circulates through the body three times every minute : This 5.6 liters of blood circulates through the body three times every minute
In one day, the blood travels a total of 19,000 km (12,000 miles) - that's four times the distance across the US from coast to coast. : In one day, the blood travels a total of 19,000 km (12,000 miles) - that's four times the distance across the US from coast to coast. 3000 miles
About 8 million blood cells die in the human body every second, and the same number are born each second. : About 8 million blood cells die in the human body every second, and the same number are born each second.
Within a tiny droplet of blood, there are some 5 million red blood cells : Within a tiny droplet of blood, there are some 5 million red blood cells
It takes about 20 seconds for a red blood cell to circle the whole body : It takes about 20 seconds for a red blood cell to circle the whole body
How many round trips of the body does a blood cell before returning to the graveyard….liver ? : How many round trips of the body does a blood cell before returning to the graveyard….liver ? 2,50,000
Red blood cells may live for about 4 months circulating throughout the body, feeding the 60 trillion other body cells : Red blood cells may live for about 4 months circulating throughout the body, feeding the 60 trillion other body cells
Slide 51 : The heart beats around 3 billion times in the averages person's life
Books that you would look for… from the authors….Dr Subroto Biswas and Dr Aman Biswas : Books that you would look for… from the authors….Dr Subroto Biswas and Dr Aman Biswas
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