Human Anatomy Important For Competitive Exams

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Longest bone in human body
Femur (thigh bone)
Hardest material in the human body Tooth
enamel
Smallest bone
STAPES the middle ear
Strongest muscle
Jaw muscle
Largest external organ
Skin
Largest internal organ
Liver

Smallest gland
Pituitary
Largest artery
Aorta
Smallest blood vessel
Capillary
Element most common in human body
Oxygen (65%)
Mineral most common in human body
Calcium
Compound most common in human body
Water
Pigment which gives a dark colour to the skin
Melanin
Nails are modification of
EPIDERMIS (external layer of skin)
Sebaceous glands in human body secrete
Sebum or oil
Muscles are attached to bones by connective tissues called
Tendons
Bones are attached to bones by
Ligaments
Lachrymal glands in human body secrete
Tears
The volume of blood in an adult is
4.7 to 5 litres
The total number of bones in human body is
206
The most common type of blood group is
Type O

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