What components comprise the skeletal system? BIOL 2010 Human Anatomy & Physiology I What components comprise the skeletal system? _______ __________ __________ _________ Are bones dead?
Skeletal System Functions: _________ _________ _________ Ask not what you can do for your skeleton… ask what your skeleton can do for you! Functions: _________ _________ _________ What types of animals DON’T have skeletons? List some examples of organs protected… Do all movements rely on skeletal system? What types of elements are most likely stored in bone? What does the skeletal system have to do with blood cells?
How does cartilage relate to the skeletal system?!? _________, _______ and _______ depend on hyaline cartilage! Chondroblasts Chondrocytes Lacunae Perichondrium Fibroblasts Blood vessels
Discuss with your neighbor and predict an answer. Take 5!!! Explain why damaged cartilage takes a long time to heal. Why doesn’t articular cartilage have a perichondrium, blood vessels, or nerves? Discuss with your neighbor and predict an answer.
Mary, Mary quite contrary how does your cartilage grow?!? ____________ growth Cartilage growth occurs in 2 regions… 1) __________ via _____________ cell division and matrix deposition ____________ growth 2) __________ via __________ division and matrix deposition
How are the variety of bone shapes categorized?!? _____ _________ Longer than wide As long as wide Relatively thin (can be curved) Any shape left over
What are the anatomical structures of long bones? Consist of 2 primary regions __________ The ends of longs bones, primarily cancellous bone The shaft of long bones, primarily compact bone
What are the anatomical structures of long bones? Cartilage (hyaline) plate between 2 regions plays special role!!! ___________ _____ The cartilage grows and becomes _________ tissue. Why wouldn’t you want growth here as an adult?
What are the anatomical structures of long bones? What is a good term for the membrane “around” the “bone” ? __________ 2 layers, contains blood vessels & nerves __________ Single layer of cells lining medullary cavity and cancellous spaces
What are the anatomical structures of long bones? Marrow Types: ______ ______ Distribution: __________ __________ Site of blood cell formation Mostly lipids, energy storage Location of red marrow Location of yellow marrow
What are the anatomical structures of flat, short and irregular bones? ______ “Cancellous sandwich” no “dia” or “epi” physes ______ Would you expect diaphysis? ___________ No diaphysis, small epiphyses possible
What are the histological features of bone? Looking at this tissue… it is mostly ________ Mostly (65%) inorganic _______________ ~ Ca10(PO4)6(OH)2 Organics are ________ and _______________ (35%)
? ? What are the histological features of bone? Normal long bone Of the 2 components: fibers vs. crystals which type are missing from these bones? ? No _______ No _______ ?