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A&P quiz 2+3
gottta studddy hard !
31
Anatomy
11th Grade
11/15/2009

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Term
skeleton has
Definition
206 bones that are very much alive
Term
two minerals that the bones store..
Definition
calcium and phosphorus
Term
the femur is how long?
Definition
24-inches long
Term
long bones
Definition
longer than they are wide, found in arms and legs
Term
short bones
Definition
shaped like cubes, found in wrists and ankles
Term
flat bones
Definition
thick, flat, and curved; found in ribs, breastbone, and skull
Term
irregular bones
Definition
differently shaped and are not classified as long, short, or flat. hip bones, vertebrae, and various bones of the skull
Term
bone is also called
Definition
osseous tissue
Term
osteocytes
Definition
bone cells that secrete an intercellular substance called matrix
Term
matrix contains
Definition
calcium and other minerals; these minerals are deposited around protein fibers
Term
minerals make bone tissue
Definition
hard and strong
Term
protein fibers provide
Definition
elasticity
Term
compact bone
Definition
refers to dense, hard bone tissue found primarily in the shafts of long bones and on the outer surfaces of other bones
Term
spongy (cancellous) bone
Definition
less dense bone tissue, located primarily at the ends of long bones and in the center of other bones
Term
the microscopic unit of compact bone is the ______, or ________________.
Definition
osteon, haversian system
Term
in spongy bone, the tissue is arranged in plates called __________.
Definition
trabeculae
Term
spongy bone has what kind of appearance?
Definition
swiss cheese like
Term
2 reasons for spaces in spongy bone:
Definition
1. decrease the weight of the bone; 2. contain red bone marrow where blood cells are produced
Term
diaphysis
Definition
the long shaft of the bone, composed primarily of compact bone that provides considerable strength
Term
epiphysis
Definition
the enlarged ends of the long bone; meets with a second bone at a joint
Term
epiphyses are covered by
Definition
cartilage
Term
epiphyseal disc (growth plate)
Definition
a growing bone contains a band of hyaline cartilage located at the ends of long bones
Term
medullary cavity
Definition
hollow center of the diaphysis
Term
in infancy, the cavity is filled with
Definition
red bone marrow
Term
in the adult, the cavity is filled with
Definition
yellow bone marrow
Term
periosteum
Definition
a tough fibrous connective tissue membrane that covers the outside of the diaphysis; protects the bone; serves as a point of attachment for muscle
Term
articular cartilage
Definition
found on the outer surface of the epiphysis; forms a smooth, shiny surface that decreases friction with a joint
Term
babies contain over how many bones?
Definition
300. (350)
Term
bones grow _______ and determine the _______ of an indivdual.
Definition
longitudenally; height
Term
longitudinal bone growth occurs at the..
Definition
epiphyseal disc (growth plate)
Term
osteoblasts are? osteoclasts?
Definition
boneforming cells; bone destroying cells
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