Skeletal System

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how many bones are there

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206

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what do bones support

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structural framework for the body

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bones assist skeletal muscle to produce

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movement

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Hempoiesis is

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blood cell formation

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Hemopoiesis occurs

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in the red marrow of bones

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Yellow marrow of adult bones serves as a site of

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triglycerides

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Triglycerides are the back bone

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of stored energy

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compact bone is arranged in units called

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called osteons

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Osteons contain blood vessels, lymphatic vessels, nerves, and

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osteocytes alon with the calcified matrix

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Bone is living and can

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manipulate as your body changes

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Haversian system (osteon) units of

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compact bone

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osteocyte

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mature bone cell

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haversian canal is the central

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canal of bone

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lacuna are spaces in bone which houses

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osteocytes

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lamellae are rings of hard

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calcified matrix

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volkmanns canal are vessels traveled from periostium to central

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canal

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canliculi connect lacunae with one anotehr allowing

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fluid transfer

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Periosteum is

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dense irregular that surrounds bone surface (wraps around the entire bone)

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endosteum is the

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lining of medullary cavity

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medullary cavity is the

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marrow cavity space in diaphysis which contains yellow marrow

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volkmanns canal are vessels traveled from periostium to central

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canal

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canliculi connect lacunae with one anotehr allowing

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fluid transfer

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Periosteum is

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dense irregular that surrounds bone surface (wraps around the entire bone)

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endosteum is the

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lining of medullary cavity

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medullary cavity is the

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marrow cavity space in diaphysis which contains yellow marrow

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What is itramemranous ossification

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embryo odel, bones formed, and major steps involved in the ossification process

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Intramembrous ossification is the formation bone directly from or within

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fibrous connective tissue membranes

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Endochondrial ossification is the formation of bone from

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hyaline cartilage models

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Intramembranous ossification forms tha flat vones of the

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skull and mandible

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What are fontanelles

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they allow the shifting of the brain in infants

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an ossification forms from mesenchymal cells as they convert to osteoblasts and lay down

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osteod matrix

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the calcifying matrix centers join to form bridges of trabeculae that constitute spongy bones

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wiht red marrow in between

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the periosteum first forms a collar of spongy bones that is then replaced by

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compact bone

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The major fontanelles are the

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anterior, posterior, anterolaterals, and posterlaterals

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Fontanelles have two major functions

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they enable the fetal skull to modify its size and shape as it passes through the birth canal

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Fontanelles also permit rapid growth of the

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brain during infancy