Cranium
Parts of Bone
s
periosteum
bone marrow
Ribs
compact bone
Vertebrae
Pelvis
cancellous
(spongy) bone
Carpal bones
Metacarpal bones
Phalanges
At birth, every long bone is made of three individual
bones separated by cartilage. Each end of the bone
is called an epiphysis and the middle bone is called a
diaphysis. These bones grow towards each other and
eventually fuse.
Patella
Calcaneus (heel bone)
Talus
There are several layers that make up a bone. The
outer layer of periosteum is dense, connective tissue.
Inside the periosteum is the compact bone which is
one of the hardest materials in the body. It is made
of a matrix of hard mineral salts, reinforced with
tough collagen fibres. Beneath the compact bones
is the spongy bone. This is a network in the form
of a honeycomb. The bone tissue grows in columns
called trabeculae. There are spaces for bone marrow
in between these columns. Long bones also have a
hollow medullary cavity in the middle of the diaphysis
where red bone marrow is contained in childhood,
turning into yellow bone marrow in maturity.
IGNIS
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