Bone structure

1.

Bone structure

2.

Lesson objectives
To learn the chemical composition,
macro- and macroscopic structure of the
bone.

3.

Lets think!
What can be found inside our
bones?

4.

The structure of human skeleton
Human skeleton is composed of bones
and cartilage.
Bone consists of connective tissue.

5.

Bone tissue
Bone tissue
Bone cells
Intracellular space filled with
(osteocytes)
Organic substances
Inorganic substances
(proteins; flexibility, elasticity) (Ca, K, P salts,hardness)

6.

7.

Lets think!!!
Why bones of growing organism
are more flexible, and the bones of
an adult are strong (hard)?

8.

Outer cover of bones known as
periosteum
Periosteum provides growth in
diameter and repair of bones
There are 2 types of bone
tissue:
1.
Compact: very dense and
strong
2.
Spongy: porous and soft
Space between bones is filled
with bone marrow
Red bone marrow: fills space
between spongy bones and
produces blood cells
Yellow bone marrow: fills
hollow interior space of bones

9.

10.

Long bone structure
Heads of long bones
are formed by
spongy bone tissue
covered by compact
bone tissue. Spongy
bone is filled with
red bone marrow
Spongy bone of
diaphysis of long
bones are filled with
yellow bone marrow,
which store fat.

11.

12.

Short bone and flat bone structure
They are mainly composed of spongy
bone.