Bones, Joints, And Cartilage Of The Skeleton
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Hiatus
An opening or foramen
Hilus
The point of the organ where nerves and blood vessels enter and exit
Foramen
An opening or hole in a bone or membrane through which pass nerves or blood vessels
The Skeletal System-Functions
Storage-minerals or calcium Connects things together Manufactures of certain materials Body frame
The Skeletal System-Components
Bone-osteology Cartilage-chondrology Joints-arthroscopy Teeth-odontology
Divisions-Appendicular
bones, joints, cartilage associated with limbs
Divisions-Axial
Bones,jones, cartilage, teeth associated with long axis of the animal Example, vertebrae, ribs, sternum, skull
Divisions-Visceral
Bones embedded in soft tissue Example, os cordis, os rostri, os penis (all found in median plane) Support for soft tissue
Haversian Canal
Canal in middle of bone
Lamellae
Thin plate in bone
Osteocyte
Mature blood cells
Canaliculi
Canal in bone
Inorganic Matter
Tricalcium Phosphate- main component of bone
Osteon
Only found in cortex of bone
How are bones classified?
Appearance and function
Long Bone
Femur and radius Extended in one direction Provides support
Short Bones
Do not have meridal cavity Provides cushioning between long bones to absorb shock In wrist and ankle
Flat Bone
Expanded in two directions Provides protection Pelvis,scapula,ribs,skull
Sesamoid Bone
Shaped like a sesameed seed
Pneumatic Bone
Has air filled cavity Associated with sinuses
Irregular Bone
Vertebrae Found in sites for protection
Cartilage Make Up
Not as dense as bone Made up of chondrocytes Not good blood flow
Cartilage function
Gives support Provides coverings on enols of bones
Hyaline
Small nests of chondrocytes surrounded by a matrix of collagen fibers Glossy, bluish in gross appearance Example, rib to sternum