Anatomy Of A Long Bone

Question 1

DIAPHYSIS

Answer 1

Cylindrical shaft of the long bone.
Blood vessels enter the diaphysis through a small opening called nutrient foreman.

Question 2

EPIPHYSES

Answer 2

Two ends of a long bone.

Question 3

METAPHYSIS

Answer 3

Where diaphysis and epiphysis meet.
Contains epiphyseal plate - growth plate in immature bone.
Epiphyseal line - replace his plate when bone growth is complete.

Question 4

MEDULLARY CAVITY

Answer 4

Center, hollow space, within diaphysis.
Filled with red and yellow marrow. Red marrow in infancy, yellow marrow in adulthood for fat storage.

Question 5

PERIOSTEUM

Answer 5

Surrounds the diaphysis, and is a dense, fibrous sheath of connective tissue.
The bone’s life support.

Question 6

ARTICULAR CARTILAGE

Answer 6

Covers articular surface of bone (epiphysis).
Hyaline cartilage.
Provides smooth surfaces for movement within joints.
Periosteum does not extend over the articular cartilage.
Decreases friction and helps absorb shock as bones move. 

Question 7

INTEROSSEOUS LIGAMENT

Answer 7

Connects select bones such as radius and ulna.
An interosseous ligament also connects the tibia and fibula.

Question 8

HAVERSIAN CANALS

Answer 8

A vascular channel.
Runs longitudinally, where the arteries and veins run. Centre circle of the osteon.
Contains blood vessels, lymphatic vessels, and nerves.
Not up and down.

Question 9

VOLKMANN’S CANAL

Answer 9

Vascular channel.
Runs horizontally.
Transverse, canals, also contains blood vessels, lymphatic vessels, and nerves.
Brings blood through the bone, comes from the periosteum.
Pulls blood, fat, and minerals out of bone.