Anatomy File

Lecture 8: Bone Organs

M/O Chapter 6

38. Identify the structural components of a long bone, with emphasis on the region of longitudinal growth.

39. Explain the functions of those structural components in the context of the whole bone organ.

40. Compare and contrast the functions of osteoblasts and osteoclasts during bone growth, repair and

remodeling.

41. Explain the roles of different hormones in bone remodeling and blood calcium levels.

42. Contrast the remodeling processes of a child (birth to adolescence) and an adult (middle to old age).

43. Identify bone markings and describe their functions.

44. Define the two major divisions of the skeletal system and list the bone structures contained within each.

Bone organs: Structure

Bone organs are made of tissues:

1. Bone tissue (1/3 cells and fibers- collagen- and 2/3 hydroxyapatite

A. Hard and strong for its weight

B. Vascular and dynamic

2. Periosteum

A. Dense irregular CT that surrounds the bone organ

B. Vascular

C. Contains mesenchymal cells

3. Hemopoetic tissue (blood making tissue)

A. This occurs in the bone marrow (tissue between trabeculae in the shaft of the bone)

B. Special CT

4. Hyaline cartilage

A. Caps on joint surfaces

B. Epiphyseal plates

5. Adipose tissue

A. Packs joint cavities

B. Found in bone marrow

6. Nerves, blood vessels and lymph vessels...

Draw a long bone and label the following parts

1.

2.

3.

4.

5.

6.

7.

8.

9.

Epiphysis

Diaphysis

Metaphysis

Marrow

Articular cartilage

Periosteum

Medullary cavity

Spongy bone

Compact bone

Bone organs: Function

Bone organs have many functions

1.

2.

3.

4.

5.

Support

Protection

Movement

Hemopoesis

Mineral storage

Bio 6: Human Anatomy

46

Fall 2013: Riggs

Classifying bone organs

1.

2.

3.

4.

Long bones

Short bones

Flat bones

Irregular bones

Bones are dynamic structures

Bones change and respond to stressors throughout life...