Spongy Vs Osteoblasts

Compact bone contains Haversian Systems, which are in concentric circles called lamellae. Haversian system contains a blood supply and the periosteum is located on the outside

Bones are joined together by joints, most of which authorize movement between the bones. Additionally, bones are a form of connective tissues manufactured by osteoblasts, which signifies immature bone cells. Speaking of bone formation, ossification occurs in two ways. One being is endochondral ossification which is established within cartilage, is the most common way the majority of bones form. Secondly, intramembranous ossification structures the flat bones of the skull, clavicle, and mandible. Furthermore, the skeletal system manufactures blood cells, which the process is named hematopoiesis, and archives and exports

Endochondral Ossification. Most bones of the human skeleton are formed by endochondral ossification. During endochondral ossification, bone replaces a cartilaginous model of the bones. Chondrocytes (cartilage cells) lays down a cartilage model that is shaped like the future bones. As the cartilage model calcifies the chondrocytes die. Osteoblasts from the periosteum secrete the organic bone matrix that undergoes calcification. The result is an outer layer of compact bone called a bone collar which covers the diaphysis. Blood vessels bring osteoblasts into a region of the cartilage called the primary ossification center where they produce spongy bone. The spongy bone of the diaphysis is absorbed by Osteoclasts creating the

The skeletal system is made up of bones and joints. Bones are a dry dense tissue that is composed of calcium phosphorous and organic matter. The bones are protected and covered by a layer of fibrous connective tissue membrane called the periosteum (Brown, et al., 2015, p. 1547). There are two basic types of bone tissue: Compact Bone and Spongy Bone. Compact bones are dense smooth bones, while Spongy bones are composed of small needle-like pieces of bones and open space. Bones are then categorised according to the shape of the bone into four groups: long, short, flat and irregular. Long bones characteristically are typically longer then they are wide and generally have a shaft with heads at either ends e.g. the humerus. They are mainly compact bones. Short bones

Bone tissue is hard and has a calcified matrix (where the pores are filled with calcium) containing collagen fibers; osteocytes (mature bone cells) lie in the lacunae (cavity containing bone cells). The key functions of bone tissues are: support and protect the body structure and provide cavities for fat storage and synthesis of blood cells. Because the matrix of bone tissue is hard and rigid, the tissue is able to provide support and protection to the

The compact bone is the hard and solid part of the bone. The compact bone is extremely strong. It is also used to carry the blood vessels and nerves. The cancellous bone or the “spongy” bone is normally located at the end of the bone and the harder compact bone surrounding it.

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Spongy bone consists of an irregular lattice of thin columns of bone called trabeculae. Blood vessels penetrate the trabeculae lattice allowing the osteocytes in the trabeculae to be given nourishment from the blood passing through the marrow cavities. Support, protection, storage of minerals, production of blood cells and storage of chemical energy. The skeleton protects internal organs: this reduces the risk of them being injured. The bone tissues contain/store several minerals, which are needed for the blood.

The long bone is composed of cartilage which covers both ends of the the bone(the epiphysis) and it helps prevents bones rubbing off each other (friction) and also is a shock absorber. The outer layer of the long bone is the hard compact bone, this allows the hollow part of the log bone some strength. The spongy part in the long bone ( in the epiphysis where the red bone marrow is stored , this allows for red blood cells to be produced. There's also a yellow bone marrow in the centre of the bone(marrow cavity) this allows for white blood cells to be produced. The shaft of the bone is also called the diaphysis. The periosteum of the long bone has no cartilage but also is a protective layer of the long bone , this is also where tendons and ligaments connects.

Compare and Contrast Quiz: Lecture4 1. Ligament vs Tendon Both are connective tissue but, ligament joints connect bone to bone, tendon joints are for bone to muscle. 2. Osteocyte vs Osteoblast vs Osteoclast Osteocyte is mature bone cells. Osteoblast comes from osteocyte and it build bone.

The Osteoblast is one of the four bone cells found inside the human body. They create bones. An Osteoblast creates the new layer of bone. The another type is called an Osteocyte. An Osteocyte can be formed from an Osteoblast while new bone is in process of creation. They get surrounded after formation. They don’t get completely barricaded because of they send out very long windy branches which connect to other Osteocytes. They can sense cracks and pressures to help direct or send Osteoclasts to dissolve the bone. Osteoclasts are large cells that dissolve the bone. They are formed when two bone cells fuse together. They come from the bone marrow. They usually have more than one nucleus when they form together. They are found on the surface

centre (mid-shaft) of long bone. Calcium is laid down in both directions forming the shaft or

Compact bone looks dense and solid, yet it is filled with passageways that serve as conduits for nerves, blood vessels, and lymphatic vessels (Marieb, 181).

Osseous tissue contains specialized cells, cell products, and a fluid matrix. The distinctive solid, stony nature of bone results from the deposition of calcium salts within the matrix. Crystals of calcium phosphate account for almost two-thirds of the weight of the bone. The majority of

The skeletal system is made up of cartilage and bone. Both bone and cartilage are connective tissues, that is, they are composed of cells in a matrix with intracellular fibers. Just imagine connective tissue as a gelatin salad with grapes and coconut. The grapes would represent cells, the gelatin the support material for matrix, and the pieces of coconut the intracellular fibers. By changing the amounts of each ingredient and adding extra substances, we can produce a material that is very hard like bone and can withstand weight or softer like cartilage which can be used as a cushioning material. In this exercise, we will examine a fresh raw chicken bone to study bone