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21 Cards in this Set
- Front
- Back
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Endoskeleton
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Internal skeleton made up of hardened components such as bones.
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Axial Skeleton
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Of vertebrates, bones of the head, trunk, and tail.
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appendicular skeleton
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Of vertebrates, limb or fin bones and bones of the pelvic and pectoral girdles.
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Vertical Column
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The backbone of vertebre
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Vertebre
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Bones of the backbone, or vertebral column.
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Intervertebral disc
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Cartilage disk between two vertebrae
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Osteoblast
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Bone-forming cell; it secretes a collagen-rich matrix that gets mineralized.
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Osteocyte
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A mature bone cell; former osteoblast that has become surrounded by its own secretions.
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Osteoclast
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Bone-digesting cell; it secretes enzymes that digest bone's matrix.
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Yellow marrow
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Bone marrow that is mostly fat; fills cavity in most long bones.
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Red marrow
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Bone marrow that makes blood cells.
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Joint
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Region where bones meet
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Ligament
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Strap of dense connective tissue that connects bone to bone (at joints)
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Bursa
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Fluid-filled sac that functions as a cushion between components of some joints.
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Tendon
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Strap of dense connective tissue that connects skeletal muscle to bone
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Muscle
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Groups of tissues that consists of three different types in the body: smooth, cardiac, and skeletal
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Muscle fiber
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Contractile cell that runs the length of a muscle.
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Myofibril
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Of a muscle, threadlike protein structures consisting of contractile units (sarcomeres) arranged end to end.
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Sarcomere
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Contractile unit of muscle.
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Motor Unit
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One motor neuron and the muscle fibers it controls.
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Myoglobin
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Muscle protein that reversibly binds and stores oxygen
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