Endochondral ossification and long bone growth in humans Endochondral ossification is the process in which the embryonic cartilaginous model of most bones, which supplies the longitudinal growth and is slowly replaced by bone. Endochondral ossification allows a growing bone to bare weight during its development. The endochondral process of ossification provides a framework for a more rigid skeletal material. Long bones of the limbs and ribs develop by endochondral ossification. Characteristics of endochondral ossification include, the presence of a hyaline cartilage model of the bone and the presence of cartilage, along with the bone during the ossification process.
Bone tissue structure Bone is hierarchically organized. Zooming in the bone structure (Fig. 4a), we find the osteons or Haversian systems, which are the basic unit of structure of compact bone. Osteons consist of concentrically arranged layers, or lamellae, of compact bone tissue, that surround a central canal, the Haversian canal, where bone’s blood supplies and nerves can be found (Fig. 4b).
They are called lymphoid organs because there is where the lymphocytes, white blood cell place as it is the main key of the immune system. Then, all the structure or organs of the immune system placed in the body. For example is the bone marrow. The bone marrow is the source of the blood cells include the white blood cells that are play an important role in immune system. The bone marrow has the soft tissue located at the center of bone.
The procedure initiates with the study of the object of interest, which is the human skull. Next is the research regarding the conventional methods of restoration and the biomaterials that will be used. From this research, conclusions are drawn regarding the usefulness of the methods of Tissue Engineering.
A thick, triangular bone which is known as patella lies anterior surface between the femur and tibia. In each knee joint, there is two pieces of C-shaped cartilage which lies between the surfaces of the femur and tibia. The lateral side of the meniscus is known ad lateral meniscus while the medial side is known as medial meniscus. The major role of the menisci is to absorb the impact load between the femur and tibia and also to provide some degree of stabilization to
All australopithecines possess anatomical characteristics of the pelvis, femur and spinal column that facilitate bipedal locomotion. Whether or not the australopithecines were fully adapted bipeds is still hotly debated in the literature. There are several important adaptations to bipedal locomotion that can be observed on skeletal material. First, the foramen magnum is shifted forward, underneath the skull. This positioning is indicative of the angle at which the spinal cord enters the skull (Tobias, 1998).
Discussion A. Role of bone scintigraphy as a first-line study After the administration of radiopharmaceuticals, tracers travel through bloodstream and reach their own target organs by the guidance of tagging material. When they arrive at their target organs, the uptake mechanism of tracers would be undertaken so the target tissues can be imaged. Their functions can be visualized, as abnormal uptake patterns may be demonstrated in abnormally functioning tissues. Such functional study of tissues provided is a major benefit of bone scintigraphy.
The components of this system are made up of 206 skeletal bones, muscles, cartilage, ligaments, a network of tendons, joints, and the other connective tissue that supports and binds tissue and organs together.The skeletal portion of this system serves us by being the main pillars and storage system for phosphorus and calcium, and it also contains fundamental parts of the hematopoietic system. Furthermore it has 2 parts, which are the axial skeletol, which is made out of the vertebral cullum, the rib cage, and the skull, and the appendicular skeletol which in turn is made up of the shoulder girdle and the pelvic one. We also have 4 types main types of bones which are, irregular bone, flat bones, long bones and short bones. As to the muscles these are divided in to 3 mains parts, which are the heart muscle which is unique only to the heart, the skeletal or voluntary muscle, and the smooth or involuntary
Some of these bones later fuse together, so that the adult skeleton has 206 bones.) These bones give you : body structure and posture, lets you move in many ways, protects your internal organs, produces blood cells, stores our chemical energy, calcium storage and endocrine regulation. Bones in our body are living tissue. They have their own blood vessels and are made of living cells, which help them to grow and to repair themselves. As well, proteins,
The Metatarsophalangeal Joints are Condyloid Joints which allow various planes of movement. Flexion, Extension, Abduction, Adduction and Circumduction are the various movements that the Metatarsophalangeal Joint can perform. The structure of a Condyloid joint consists of an oval end of a bone that fits into a
The objective of the virtual lab on bones consisted of identifying the major bones of the human body. We had to place the major bones of the body in the correct anatomical position. The key terms included the axial skeleton which includes the skull and the bones that support it, such as, the vertebral column, ribs, and sternum. The appendicular skeleton includes the bones of the limbs and the structures that support them such as, the scapula and pelvic bones. It is also noted that where two bones meet is called a joint.
Dentin consists of a substance that is similar to bone, it is underneath the enamel and gives your teeth their color. Last is pulp, pulp is inside of the pulp cavity beneath dentin. Pulp is made of nerves, blood vessels, and connective tissue. Pulp gives your teeth the nutrients they need to live and not fall out or get infected. Tooth decay and stains are very common.
Bones are living tissue composed of living cells because of this they are a complex source of a wide variety of nutrients. They contain minerals which are embedded in protein, fat and fat soluble vitamins. They are a great source of calcium, copper, iodine, iron, magnesium, zinc, and manganese. The central part of most bones contain marrow which is a highly nutritious source of blood forming elements. They also provide natural antioxidants including enzymes.
The four components of the axial skeleton are: SKULL (consists of 28 bones that include the cranium, which encloses and protects the brain and facial bones). VERTEBRAL COLUMN (supports the skull and protect the spinal cord). RIBS ( 12 pairs of bow shaped bones that protect the organs in the body cavities of the trunk). STERNUM ( aka breastbone and supports the collar bones). The Appendicular skeleton consists of: PECTORAL GIRDLE (consists of two shoulder blades and two collar bones, which articulate together to allow some movement).