Monday, March 26, 2012

How many bones are in the human body? « Media News Net

March 26, 2012

206

The adult human body has 206 bones. An infant may have from 300-350 bones at birth. Some of these fuse together as the infant grows. When some bones fuse and become one bone (most obvious examples are in the skull, sacrum and hip bones) the number of overall bones drops to the 206 bones that most adults have.

Of the 206 bones in the adult human body, more than half (106) are in the hands and feet. The adult skeleton consists of the following bones:

28 skull bones (8 cranial, 14 facial, and 6 ear bones)
The horseshoe-shaped hyoid bone of the neck which is the only bone that does not articulate (connect via a joint) to another bone
26 vertebrae (7 cervical or neck; 12 thoracic; 5 lumbar or loins; the sacrum, which is five fused vertebrae; and the coccyx, which is four fused vertebrae)
24 ribs plus the sternum or breastbone; the shoulder girdle (2 clavicles, the most frequently fractured bones in the body, and 2 scapulae)
The pelvic bones (3 fused bones called the coxal bone, or Os Coxae)
30 bones in each of the arms and legs (a total of 120)
A few partial bones, ranging from 8-18 in number, which are related to joints

How many bones are in the human body?

Humans are born with about 300 to 350 bones. Many of these bones fuse together between birth and maturity to produce an average adult total of 208 bones. The number of bones in the human body varies according to the counting method used. While some methods consider a given structure to be a single bone with multiple parts, others consider the same structure to be multiple bones.
Location Number
Skull 22
Ears (pair) 6
Vertebrae 26
Vertebral ribs 24
Sternum 3
Throat 1
Pectoral girdle 4
Arms (pair) 60
Hip bones 2
Legs…

Error processing request

0 comments:

Post a Comment