Why do collagen fibers in lamella run in opposing directions?
Why do collagen fibers in lamella run in opposing directions?
In a cross-section, the fibers of lamellar bone can be seen to run in opposite directions in alternating layers, much like in plywood, assisting in the bone’s ability to resist torsion forces.
What is the benefit of the alternating directions of collagen in each layer of an Osteon?
If one lamellae has collagen fibers directed superiorly and to the right, the next lamellae will have collagen fibers directed superiorly and to the left. THE ALTERNATING COLLAGEN FIBER DIRECTION GIVES BONES PART OF ITS STRENGTH AND RESILIENCE. this is the left over parts of osteons that have been partially resorbed.
Which structure allows the diaphysis of the bone to increase in length until early childhood as well as shaping the articular surfaces?
FINAL
| Question | Answer |
|---|---|
| WHICH STRUCTURE ALLOWS THE DIAPHYSIS OF THE BONE TO INCREASE IN LENGTH UNTIL EARLY CHILDHOOD, AS WELL AS SHAPING THE ARTICULAR SURFACES | EPIPHYSEAL PLATE (C) |
| THE MOST ABUNDENT SKELETAL CARTILEDGE TYPE IS? | HYALINE (A) |
| WHICH OF THE FOLLOWING IS NOT A FUNCTION OF THE SKELETAL SYSTEM? | COMMUNICATION (D) |
Which structure allows the diathesis of the bone to increase in length until early childhood?
The epiphyseal plate is the area of growth in a long bone. It is a layer of hyaline cartilage where ossification occurs in immature bones. On the epiphyseal side of the epiphyseal plate, cartilage is formed. On the diaphyseal side, cartilage is ossified, allowing the diaphysis to grow in length.
What is the advantage of spongy bone tissue in the ends of long bones?
What is the advantage of spongy bone tissue in the ends of long bones? The advantages of Spongy bones is it’s lighter than compact bone yet still strong and they follow the lines of stress which helps with support.
What are the stages of endochondral ossification?
Terms in this set (6)
- Cartilage enlarges; Chondrocytes die.
- blood vessels grow into perichondrium; cells convert to osteoblasts; shaft becomes covered with superficial bone.
- more blood supply and osteoblasts; produces spongy bone; formation spreads on shaft.
- Osteoclasts create medullary cavity; appositional growth.
Does ossification ever stop?
Ossification of long bones proceeds until only a thin strip of cartilage remains at either end; this cartilage, called the epiphyseal plate, persists until the bone reaches its full adult length and is then replaced with bone.
What are the small spaces in bone tissue that are holes in which osteocytes live called?
ch. 6
| Question | Answer |
|---|---|
| what are the small spaces in bone tissue that are holes in which osteocytes live called | lacunae |
| the process of bones increasing in width is known as | appositional growth |
| which cells accomplish the process of resorption | osteoclast |
What is only found in cancellous bone?
Cancellous bone, also known as spongy or trabecular bone, is one of the two types of bone tissue found in the human body. It is very porous and contains red bone marrow, where blood cells are made. It is weaker and easier to fracture than cortical bone, which makes up the shafts of long bones.
What are collagen fibers that wrap in alternating directions?
Each consecutive bone lamella has collagen fibers that wrap in alternating directions True Osteogenesis is the process of bone formation The bone cells that function in the forming of bone tissue are called osteoblasts
How are bones classified by their collagen fibers?
Each consecutive bone lamella has collagen fibers that wrap in alternating directions. Bones are classified by whether they are weight bearing or protective in function. Ossification of the ends of long bones ________.
Which is a bone collar around the cartilage model?
A bone collar forms around the cartilage model. c. A medullary cavity forms. d. The cartilage matrix begins to deteriorate. Each consecutive bone lamella has collagen fibers that wrap in alternating directions. Prevention of osteoporosis includes adequate intake of ________.
Is the trabeculae of spongy bone oriented toward lines of stress?
The trabeculae of spongy bone are oriented toward lines of stress. The term osteoid refers to the organic part of the matrix of compact bones. Which of the following is the single most important stimulus for epiphyseal plate activity during infancy and childhood?
A bone collar forms around the cartilage model. c. A medullary cavity forms. d. The cartilage matrix begins to deteriorate. Each consecutive bone lamella has collagen fibers that wrap in alternating directions. Prevention of osteoporosis includes adequate intake of ________.
The trabeculae of spongy bone are oriented toward lines of stress. The term osteoid refers to the organic part of the matrix of compact bones. Which of the following is the single most important stimulus for epiphyseal plate activity during infancy and childhood?
What is the role of bones in the lacunae?
Chondrocytes in the lacunae divide and secrete matrix, allowing the cartilage to grow from within. Choose the FALSE statement. Long bones include all limb bones except the patella. The main role of the appendicular skeleton is to protect and support vital organs.
Where can I find Chapter 6 of bones and skeletal tissues?
A&P Chapter 6 Bones and Skeletal Tissues front 5 Drag the appropriate labels to t back 5 front 6 Which of the following substance back 6 calcium front 7 The illustrated bone-forming pro back 7 parietal front 8 During bone growth, which event back 8 expansion of the cartilage matrix