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Anatomy/Physiology - Skeletal System
N/A
30
Biology
12th Grade
03/19/2010

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Term
Function of Skeletal System
Definition
Support, Movement, Protection, Production of blood cells and platelettes, Storage of calcium, phosphorus, lipids
Term
Tendons
Definition
Non-elastic connective tissue, connects muscle to bone
Term
Ligaments
Definition
Slightly elastic, attaches bone to bone
Term
Erythrocites
Definition
Red Blood Cells
Term
Leukocytes
Definition
White blood cells
Term
Yellow Bone Marrow
Definition
Central cavities of long bones. Where lipids are stored
Term
Osteon (haversian systems)
Definition
Bone Cells. Includes: Lamellae Rings, Haversian Canal, Canaliculi, Lacunae
Term
Lamellae Rings (of an Osteon)
Definition
Contains collagen
Term
Haversian Canal (of an Osteon)
Definition
Osteonic channel. Contains blood vessels.
Term
Canaliculi (of an Osteon)
Definition
Cytoplasmic extensions
Term
Lacunae
Definition
Space that osteocyte occupies
Term
Osteocyte
Definition
Mature bone cell. Develops from a precursor called and osteoblast. Deposit calcium phosphate.
Term
Osteoblast
Definition
Bone forming cells. Secretes collagen fibers in rings. Calcium phosphate is laid on top.
Term
Matrix
Definition
Calcium phosphate, collagen, and some proteins
Term
3 Types of Bone Cells
Definition
Osteocytes, Osteoblasts, Osteoclasts
Term
Osteoclasts
Definition
Destroy bone cells
Term
35% inorganic is made of...
Definition
Collagen and bone cells
Term
65% inorganic is made of...
Definition
Calcium salts
Term
Two Types of Bones
Definition
Compact Bone and Spongy Bone
Term
Compact Bone
Definition
Covers entire outer portion and is thicker around diaphysis
Term
Spongy Bone
Definition
Spaces in between matrix and found in epiphysis of long bones and flat bones
Term
Epiphysis
Definition
End of bones
Term
Diaphysis
Definition
Shaft of bones
Term
Articular Cartilage (Hyaline Cartilage)
Definition
Shiny. Protection and prevention of friction.
Term
Epiphyseal Plate
Definition
Growth plate. Active division of bone cells.
Term
Periosteum
Definition
Membrane layer which surrounds the entire bone except for at the epiphysis. Has two layers
Term
Outer Layer of Periosteum
Definition
Nerves and blood vessels
Term
Inner Layer of Periosteum
Definition
Osteoblasts and Osteoclasts
Term
Yellow Marrow
Definition
In diaphysis. Fat storage.
Term
Red Marrow
Definition
In epiphysis. Production of red blood cells.
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