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which one is correct:
a. are mature cartilage cells located in spaces called lacunae
b. within the cartilage divide and secrete new matrix
c. located deep to the perichondrium
d. never lose their ability to divide
I like the right answer is b!!
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∙ 13y ago
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What is cartilage cells called?
Chondrocytes
What is the medical term meaning under cartilage?
Hypochondral or subchondral.subchondral
What is the difference between fibroblast and chondroblast?
Fibroblasts are responsible for synthesizing extracellular matrix components, - ground substances and collagen. Chondroblasts are responsible for synthesis of cartilage.
What is chondrisome?
~ CHONDR~ prefix or root to denote id+ | DOTS or GRANULES GRANULE GRISTLE | see> MITOCHONDRIA or CHONDRIOSOME from gr MITO = THREAD CHONDROS DOT or GRANULE like ~ CHONDRAL gr CHONDROS = CARTILAGE biol> CARTILAGE or CHONDRAL TISSUE SHOWS NUCLEI AS LITTLE GRANULES OR INCLUSIONS ~ CHONDRIOSOME or MITOCHONDRIA biol> A MITOCHONDRION IS AN INTRA CELLULAR ORGANELLE SIMILAR TO THREAD OF GRANULES THEY ARE THE PRINCIPAL SITE OF ENERGY GENERATION WHERE FOODSTUFF IS OXIDATED med> MANY HUMAN DISORDERS ARE CAUSED BY MITOCHONDRIAL DEFECTS eg some forms of MUSCLE DYSTROPHY BLINDNESS etc ~ CHONDRO~ prefix to denote CARTILAGE ~ CHONDROBLAST gr BLASTOS = SHOOT or BUD med> CELL THAT GIVES RISE TO CARTILAGE ~ CHONDRODENDRON gr DENDRON = TREE med> CELL TYPE WITH LONG PROCESSES ~ CHONDROGENESIS gr GENESIS = ORIGIN or SOURCE of CARTILAGE ~ CHODROID gr EIDOS = APPEARANCE or LOOK LIKE CARTILAGE
How does bone repair after injury?
yes up to certain age It's easy to think of our bones as solid, lifeless matter where all of our living tissue just sits. But your skeleton is as much a living part of your being as your softer tissues and organs. The body stores minerals in the hard, compact bone. It produces red blood cells in the inner red marrow and stores fat in the yellow marrow. It's important to remember that your bones are constantly changing. Cells called osteoclasts constantly break down old bone so that osteoblasts can replace it with new bone tissue -- a process called bone remodeling. Another type of cell called a chondroblast forms new cartilage. These are three of the primary cells responsible for bone growth -- and not just the bone growth you experience early in life. This constant bone remodeling gradually replaces old bone tissue with new tissue during the course of months. = Bone growth = The bones of embryos are made largely of cartilage. They are soft. The process of ossification uses calcium to create bone as the child grows and matures. Bones gradually become hard and strong. With age bones lose their density and strength. When severe this is called osteoporosis. Eating foods containing calcium and exercising regularly helps bones to develop and stay stronger for longer.
Why does cartilage and tendons take so long to heal?
Cartilage heals slower than bone because cartilage is avascular. Meaning there is no blood vessels. The lack of blood flow creates a slow healing process.Bone heals faster than cartilage because cartilage is avascular (no blood flow). This means that the blood flow necessary in injury repair will not get to the cartilage immediately; it will take much longer. Bone, however, does have blood flow because bone marrow produces red blood cells, which are able to repair the damage to the bone.Cartilage has a very poor blood supply which means that nutrients to aid healing are not readily available and it therefore takes a long time to heal, if indeed it does. Bone on the other hand, has an excellent blood supply which helps remove damaged tissue and debris plus it brings a healthy supply of new cells to support rapid remodelling. A completely healed bone (provided the fracture wasn't complicated) will lead to a structure that is just as strong as it was prior to injury. Although the main building work is done by approximately 8 weeks or so, it will actually take up to two years for full strength to be returned. Proper rehabilitation will ensure that the process is optimised e.g by doing weight bearing exercise as appropriate to strengthen the bone.
What are the main events of endochondral ossification?
Meschyme (embryonic connective tissue) develops into a body of hyaline cartilage, covered with fibrous perichondrium, in the location of a future bone. For time, the perichondrium produces chondrocytes and the cartilage model growth in thickness.
