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19 Cards in this Set
- Front
- Back
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Connective tissue |
Protects and supports the body and its organs, binds orgams together, stores energy and reserves as fat and provided immunity |
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Muscle tissue |
Is responsible for the ,moment and generation of force. |
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Nerve tissue |
Which initiates and trasmits action potential/ nerve impulse that help coordinate body activity |
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Name the 3 primary germ layers form after 8 days of fertilisation |
Ectoderm Encoders Mesoderm, develops into connective and muscle tissue. The epithial tissue arises from the 3 germ layers |
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Give examples of connective tissues |
.... |
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Connective tissue is characterized by its abundance extracellular material. This includes? |
Loose (arelor) connective tissue in the skin. Dense connective tissue in the tendons. Cartilage Bone |
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In the case of bone the extracellular tissue is known as what? |
Matrix |
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Matrix composition |
25% water 25% protein fibre 50% mineral salt |
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Bone tissue comprises of 4 different types of cells. Name them? |
Osteoprogenitor . Osteoblast . Osteocytes. Osteoclast . |
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Osteoprogentior |
Unspecified cells (stem cells) that can undergo mitosis and develop into ostelblast. They are flound in the inner portion of the periosteu, in the endosteum and in the canals in the bone that contain the blood vessel. |
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Osteoblast |
These cells can form bone but have lost the ability to divide via mitosis and instead secret collagen and other organic compounds needed to build bone tissue. |
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Osteocyte |
These are mature cells arising from osteoblast and also unable to undergo mitosis they are the principle cells of bone tissue. Osteoblast are found on the surface of Bones and as they surround themselves with matrix material, they gradually become osteocytes that no longer secret matrix materials. These cells perform daily cellular functions to maintain the bony tissue e.g. exchange for nutrition and waste with the blood. |
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Osteoclast |
These cells arise from monocytes (a phahocytic white cell) they settle on the surface of the bone and function in bone reabsorption via destruction of matrix. This is important in the development p, growth maintainanxw and the repair of bones. |
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Name the 4 different types of structural Bones? |
Long bones. Short bones. Flat bones. Irregular bones. |
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Long bones. |
Easily identified by their longitudinal axes amd expanded and often uniquely shaped articular end e.g. humerus and femur |
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Short bones. |
Usually cubed or box shaped in appearance, an typically as broad as they are long. E.g. Tarsal and carpal bones. |
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Flat bones |
Are generally broad and thinking flatten and often curved surface. |
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Irregular bone |
Often found in clusters and exhibit various sizes and shapes. E.g. vertebral and facial bones |
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Functions of the bone |
Supporting framework Protection Movement Mineral storage Hematopiesis |
