Bones/ Musucular
Terms
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- Origin?
- Attached to a bone; that remains stationery during a contraction
- Insertion?
- Attached to bone; Moves during a muscle contraction
- Diaphysis?
- The shaft region of a long bone
- Epiphysis?
- The rounded end region of a long bone
- Epiphyseal Plate?
- A line where the epiphysis becomes fused to the diaphysis
- Haversian Canal
- Bone canal that contains blood vessels and nerves; found in the compact bone
- Osteocyte
- A young, living bone cell that is found within the lucunae ; lays down new rings of bone
- Osteoblast
- Specialized cell that functions in formation of bone tissue
- Lamella
- Layers of bone ; surround Haversion canal; provide bone with strength and rigidty
- Canaliculi
- Hair like channels which connect lucunae to the haversion canal;deliver blood to bone cells
- Ligament
- Connects bone to bone
- Tendon
- Connects muscle to bone
- Periosterm
- Tough membrane outside of bone that contains blood vessels
- Yellow Marrow
- Fat cells for energy found in Diaphysis
- Red Marrow
- Found at the ends of long bone; makes blood red cells
- Medullary Canal
- Long cylindrical inside space of bone filled with red or yellow bone marrow
- Spongy Bone
- Bone with many airspaces that provides bone with support and makes it very lightweight
- Compact Bone
- very hard dense bone that provides bone with strength
- Flexor
- muscle that moves two bones closer together
- Extensor
- Moves same two bones farther apart
- Antagonistic Muscles
- Opposite of what its contracting
- Sarcomere
- basic contractile unit of muscle
- Actin
- Thin protien molecule
- Myosin
- Thick protien molecule
- Smooth Muscle
- No stripes, involuntary, found in stomach
- Cardiac Muscle
- Stripes; involunatry; intercalated discs; found in heart
- Skeletal Muscle
- Stripes;Voluntary; Attached to bones
- Fast Twitch Fibers
- White muscle specialized for very short powerful bursts of activities
- Slow Twitch Fibers
- Red Muscle contracts slowly capable of long term activity