Microscopic Structure
what do the lamella and the lacuna have in common:
the lamella holds the lacuna
What is a compact bone?
a tightly packed tissue composing the walls of bones (heavy and strong).
When does ossification occur?
It occurs after you are born and it complete at 18-25 yrs.
where is the articular cartilage?
what is the Canaliculi?
Tunnels for bone cells to communicate
the function of spongy bone:
makes blood cells
What makes new bone?
Osteoblasts
how many bones do we have?
206
where is the central canal found? and their function?
in the osteon
hold blood vessels and nerves
where does articulation happen:
in the Epiphysis
Why does bone remodel?
They remodel because of calcium levels, gravity, and muscular activity. (Age)
the difference between the axial and appendicular structure:
appendicular is the limbs and girdles
the axial is the head, trunk, ribs
Explain the perforating canals:
they connect osteonic canals and run into the compact bone
The function and structure of the Periosteum:
a tough covering the bone (except the articular cartilage)
help form and repair bone tissue
what is the bone-breaking cell called
osteoclasts
what are the functions of bones?
helps with movement, supports, stores calcium, protects organs,
How does the structure of the compact bone differ from the structure of the spongy bone when viewed with the naked eye?
The compact bone appears more solid with some holes.
The spongy bone has a lot of spaces in between areas
what happens if you break a long bone:
the body forms a clot around the break. Immune system cells get rid of germs that may have entered. Then the new bone is formed.
if there was no gravity what will happen to your bones:
your bones get weaker
how do bones relate to muscles?
relates because of density and helps with movement.