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
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of MOTHER BOARD [pic] Task 2(Optional): A practice on disassemble the components of a PC and assembling them to working condition. Why should one learn about hardware? 1. Troubleshoot you and save time. 2. Knowing about system internals and components. 3. Very easy installation for modern hardware. 4. Install extra memory. 5. Removing components. Safety Precautions: 1. Beware of electrostatic discharge (ESO) 2. Build computer
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The leading disturbance Leukemia causes is the uncontrolled growth of leukocytes that prevent normal blood development in the bone marrow. All blood cells are formed in the bone marrow‚ developed from primitive stem cells into mature blood cells. There are approximately 2.5 million red blood cells and about 3‚500 white blood cells produced every second. These cells are produced at a ratio of seven hundred to one. There are four types of leukemia. These include acute myeloid leukemia‚ acute lymphoblastic
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According to recent studies‚ there are less than two hundred thousand cases of bone cancer per year. There are three varieties of bone cancer which are called chondrosarcoma‚ Ewing’s sarcoma‚ and osteosarcoma. The most dangerous out of the three is Ewing’s Sarcoma‚ which only seventy percent out of one hundred survive after five years of the diagnosis. Chondrosarcoma is also very dangerous if it has progressed further before treatment‚ making it only a twenty-five percent survival rate after five
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Bone Cancer Bone cancer is when there is an abnormal growth in the amount of tissue in a bone. These strange growths can be either benign or malignant‚ but usually malignant. There are two types of bone cancer; primary and secondary. In primary bone cancer‚ the cancer had actually started in the cells of the bone‚ whilst in secondary‚ the cancer has started in a different area and traveled through the body to the bone. The three main types of bone cancer are osteosarcomas‚ Ewing’s sarcomas‚ and
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Salient Points Bone Formation * Bone formation termed ossification of calcification * Endochondral ossification – Forms all bones below skull (except clavicle) New bone forms from a hyaline cartilage model Bone tissue replaces the cartilage model Begins in the interior of each bone from an ossification center Ossification center – group of stem cells that transform into osteoblasts Long bones – ossification centers in the diaphysis and each epiphysis Short bones – one ossification
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is involved. 2. Bone tissue is the primary type involved 3. Connective tissue is the specific type of tissue involved 4. Osteoblasts are the specific types of cells that produce the normal microanatomy of the tissue. 5a. With ageing‚ bone mass decreases. This is espeically true of women following menopuase. Estrogen acts as a protector of bone by inhibiting the activity of osteoclasts. Once estrogen levels drop‚ after menopause‚ osteoclast activity increases. 5b. Bone mineral density (BMD)
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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. Every single person has a skeleton made up of many bones. These bones give your body structure‚ let you move in many ways‚ protect your internal organs‚ and more. As well‚ proteins‚ minerals and vitamins make up the bone. Bones have several parts‚ but are manily made out of calcium deposits. It takes around 20 years for our bones to completely
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Introduction • Bone tumor is neoplastic growth of tissue in bone‚ abnormal growth can benign or malignant. • Average five year survival in united states after being diagnosed with bone & joint cancer is 67%. CLASSIFICATION Tumor classified as primary tumors‚ which originate in bone derived cells & tissues.it may be neoplastic‚ developmental‚ traumatic‚ infectious & inflammatory etiology. Secondary tumors originate in other sites & spread (metastasizes) to skeleton. Carcinomas of prostate‚
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composition of bone mostly consist of inorganic material and collagen fibers. The macroscopic structures of bone is Compact bone‚ Cancellous bone‚ Epiphysis‚ Diaphysis‚ Periosteum‚ Red bone marrow‚ yellow bone marrow‚ and the articular cartilage (Doitpoms.com). Collagen is a triple helix structured protein that is the most prominent protein in the skeletal system. Bones consist of two distinct types of bone tissue such as cancellous and cortical bone. Cancellous bone is also known as spongy bone and is located
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