Anatomy Of Long Bone

Question 1

Describe features of Diaphysis

Answer 1

The shaft is inline with the sagittal axis (Length of the bone)
The bone is very strong due to collagen within the compact bone.
Diaphysis surrounds that medullary cavity

Question 2

Describe features of Epiphysis

Answer 2

• There are proximal + distal epiphysis

- epiphysis is filled with spongey bone, contains red bone marrow

Question 3

Give the location and decription of the articular cartlidge.

Answer 3

• Articular hyline cartlidge located on the outside if of the epiphysis, it is smooth to prevent friction between the opposite articular cartlidge

Question 4

what area does bone growth occur on a long bone?

Answer 4

Long bone growth occurs on the epiphyseal line

Question 5

list the purpose of articular hyaline cartlidge

Answer 5

• absorbs compressive forces e.g gravity. Helps in resilience, support and flexibility
• Supports each epiphysis

Question 6

what wraps around the longbone like glad wrap, and how does it stick?

Answer 6

The periosteaum wraps around the bone (Thin layer)

strong collagen fibres called ‘sharpey’s fibres

Question 7

Describe the functions of the periosteum

Answer 7

• double layer membrane
• outer layer has dense connective tissue to attach tendons
• inner layer consist of osterblast and osterclasts
• diffusion is caused by nerve fibres and blood vessels causing minerals to diffuse in and out of long bone.

Question 8

Whats is the structure and function of the medullary cavity

Answer 8

• The medullary is the hollow shaft of the long bone

- Contain red and yellow bone marrow

Question 9

Red Bone marrow

Answer 9

Red bone marrow tissue is called Haematopoietic tissue, formation is located on spongy bone, formation of haematopoiesis (blood cells) is formed there. Similar place for bone marrow harvesting (transplant)

Question 10

Yellow bone marrow

Answer 10

fat storage for nutrients in the shaft of bone, no production of blood cells