A typical lcross section of bone exhibits a sandwich of compact bone on each sid

Question

A typical lcross section of bone exhibits a sandwich of compact bone on each side and an interior spongy bone. ploe. A diploe is used by structural engineers in the manufacture of impact his arrangement is known as a di stant products such as helmets, bullet proof jackets, airplane wings, etc. The outside shell resists penetration of objects while the spongy core absorbs energy As d group you will harvest several chicken bones and physically and chemically treat them to determine the erfects on the strength of the bone. The bone of choice will be a tibia bone or femur of a chicken. Working in groups, cut away the flesh to expose the bone. Be careful not to cut yourself. Look for a bright white membrane as you cut away the muscle tissue. This membrane is the periosteum. Carefully remove all the muscle Trom the periosteum without cutting through it at this time. Use your textbook to name the type of connective tissue that represents the periosteum. Examine the bone and note the location of the articular cartilage. Does the periosteum cover the articular cartilage? Scrape through the articular cartilage to the bone and take note of its thickness. Do you think the articular cartilage is relatively thick or thin? thickness but give your best estimate. Do not spend too much time on the ngitudinal slice in the periosteum. You should see a blood vessel coming into the bone at the diaphysis. ent artery. State the name of the foramen it passes through. Hint: It has is blood vessel is called the nutri the identical name in a human Th

Explanation / Answer

1.

The periosteum consists of dense irregular connective tissue.

It is divided into outer "fibrous layer" and inner "cambium layer".The fibrous layer contains fibroblasts, while the cambium layer contains osteoblasts.

2.The periosteum doesn't cover the portion of bones that contains articular cartilage, periosteum is absent in articular cartilages

Articular carrilage is cartilage found in joints that keeps the bones from rubbing together.

3 .Articular cartilage is about 2 to 4 mm thick.

The thickness of articular cartilage seems to be related to the congruance of a joint.

4 .foramen ovule

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