교과서 질문
Mark the following statements about bone tissue as true or false. If a statement is false, correct it to make a true statement.
e. Osteoblasts are responsible for bone resorption, and osteoclasts are responsible for bone deposition.
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6. Bones & Skeletal Tissue
An Introduction to Bone and Skeletal Tissue
객관식
Which of the following characteristics of skeletal cartilage limits its thickness?
A
It has a girdle of perichondrium that resists outward expansion when it is compressed.
B
It is primarily composed of water.
C
It is avascular and receives most of its nourishment from the perichondrium that surrounds it.
D
It is resilient.
검증된 단계별 안내1
Understand that skeletal cartilage is a type of connective tissue that provides support and flexibility to various parts of the body.
Recognize that one of the key characteristics of cartilage is that it is avascular, meaning it does not have its own blood supply.
Since cartilage is avascular, it relies on diffusion for the exchange of nutrients and waste products. This diffusion occurs through the perichondrium, a dense layer of connective tissue that surrounds the cartilage.
The limitation in thickness arises because nutrients and oxygen must diffuse through the perichondrium to reach the chondrocytes (cartilage cells) within the cartilage. The efficiency of diffusion decreases with increased thickness, limiting how thick the cartilage can become.
Therefore, the avascular nature of cartilage and its reliance on the perichondrium for nourishment are the primary reasons for the limitation in its thickness.
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