2Distinguish between the functions of red marrow and yellow marrow. Sponge: Set up Cornell Notes on pg. 59Topic: 7.1 Functions of boneEssential Question:Distinguish between the functions of red marrow and yellow marrow.7.1 Functions of Bone2.1 Atoms, Ions, and MoleculesDistinguish between the functions of red marrow and yellow marrow.
3On pg. 59 Tree Map of functions of bone Skeletal System:Functions of BoneSupport, Protection, MovementBlood cell formationInorganic Salt Storage
4Skeletal SystemBones may appear to be non-living, but bone contains very active, living tissuesBone tissueCartilageDense connective tissueBloodNervous tissue
5Bone Function Support and protect softer tissues Provide points of attachment for musclesAid in body movementHouse blood-producing cellsStore inorganic salts
6Support, Protection, and Movement Give shape to head, face, thorax, and limbsBones of lower limbs, pelvis, and vertebral column support the body’s weightSkull protects eyes, ears, and brainRibs cage protects heart and lungsPelvic girdle protects reproductive organs
7Blood cell formation Hematopoiesis: process of blood cell formation Happens in bone marrow (soft, connective tissue)Red marrow: forms RBC, WBC, and plateletsYellow marrow: stores fat and is inactive in blood cell productionIn cases of severe blood loss, the body can convert yellow marrow back to red marrow to increase blood cell production.
8Inorganic Salt Storage The salts account for 70% of the extracellular matrix of bone tissue by weightBody requires calcium for blood clot formationOsteoporosis- loss of bone mass and mineral contentBones develop spaces and canalsEnlarge and fill with fatty tissueNo longer able to support body weightEasily fractureAssociated with aging
9Clinical Application 7.2: Osteoporosis Pg. 58Clinical Application 7.2: OsteoporosisPlease read and highlight 7.2 Clinical App as well as answer the following 5 questions.What is osteoporosis?What happens to affected bones?Who is most at risk for a hip fracture due to osteoporosis?Name 5 factors increase the risk of osteoporosis?What are 3 ways to prevent osteoporosis?