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24 terms

chapter 5 Skeletal system _Hystology

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Part of the skeletal system
Bones, Joints, cartilages and ligaments.
What are the two subdivision of the skeletal system?
Axial skeletal and appendicular skeletal.
List the functions of the skeletals system?
support the body, protect soft organs, allow mouvement dut to attached skeletal muscles, store minerals and fats, and blood cell formation.
What is the total number of bones in the human body?
the adult skeletal has 206 bones.
List two basic type of blood tissue
Compact and spongy bone.
What are the characteristics of a compact bones?
A compact bone is dense and looks smooth and homogenous.
What are the characteristics of a spongy bone?
Small needle-like piece of bone and lots of open space.
How are bones classified?
Classified by long bones, short bones, flat bones irregular bones.
Describe long bones
Long bones are typically longer than they are wide, have a shaft with heads at both ends and contains mostly compact bones
Example of long bones
Femur and humerus.
Describe short bones
Generally cube- shape, contains mostly spongy bone
Example of short bone
Carpals and tarsals
Describe flat bones
Thin, flattened and usually curved, two thin layers of compact compact bones and one middle layer of spongy bone
Example of flat bones
Skull, ribs, sternum
Describe irregular bones
Irregular shape. it cannot be classified into the other categories
Example of irregular bones
Vertebrae, and hip bones
Diaphysis
Body of the long bone composed of mostly compact bone.
Epiphysis
Ends of long bones composed of mostly spongy bone.
Periosteum
outside covering of the diaphysis. (Fibrous connective tissue)
Sharpey's fibers
Secure periosteum to underlying bone
Aticular Cartilage
Covers the epyshysis
epiphyseal plate
Hyaline cartilage seen in the young later transform to epiphyseal plate.
Epiphyseal line
Dry Hyaline cartilage seen in an adult. Pre-transformed of epiphyseal line,
Medullary Cavity
Cavity inside the long bone shaft that contains yellow blood marrow in adlults and in infants it contains red blood cell formation,