Femur and patella (knee cap), tibia and fibula are bones of lower limbs
Femur is the longest bone
Head or skull has 29 bones
Total bones are 206
Total muscles are 600 (chk 650)
60 thousand miles of capillaries of blood
Chemically finger nails are made of protein
Nails are made of a tough material called keratin
Average body has 2 square yards of skin
Weight of skin is 6 pounds
Smallest bone is stirrup in the ear about 1/10th of an inch
A newborn baby has 300 bones
In 22 weeks baby is formed completely
Ovum is a female germ cell
The sensation of skin is perceived by epidermis
Number of systems in body are of 7 types
Man breathes 20,000 times in a day
Root of hair is called follicle
More than 2/3rd of body weight is made of fluids/water
Messages sent in brain at 240 miles/hour
Weight of eyes is 1 ½ ounces each
There are 100,000 hairs
Muscle of jaw exerts 219 kg weight
Circadian rhythm is a medical term of heart beat
Atmosphere exerts a pressure of 15 pounds per square inch on human body
Iris of eye regulates the quantity of light admitted into the eye ball
Outer layer of eyeball is called sclerotic
The front portion of sclerotic is called cornea
In eye a convex lens is placed
Cornea is the only part of body without blood supply
In front of eye is Cornea, which bends light as it passes into the eyeball. It is covered by a thing membrane called Conjunctiva
Image made on ratina is upside down, but our brain turns it right.
Behind the Cornea is a sheet of muscles called the Iris with the small hole in the middle called the pupil.
Iris manages the amount of light entry into eye. In dark it relaxes to let pupil enter light as much as possible and in bright light it contracts.
The muscles attached to the lens are ciliary muscles. These muscles can contract the lens thin to see distant objects and for close objects these muscles relax.
Retina contains cone shaped cells that can detect colors.
Retina contains rod shaped cells that can see dim light.
In the centre of retina is a small yellow area called the fovea where each cell has its own connection to the brain.
Skeleton word comes from a Greek word meaning dried up.
The defect of vision because of which a person cannot see distant objects clearly: Myopia or Short sightedness
Where on your body are the most sweat glands-Feet
Your eyeballs are 3.5% what-Salt
The human bodies got 45 miles of them – what-Nerves
