the skeletal system Flashcards
______ is a rigid, living organ made up of all 4 types of tissues
bone
what are the four types of tissues?
connective, nervous, epithelial, muscle
support, movement, protection, storage, hematopoiesis (blood cell formation), and hormone production are all?
functions of the skeletal system
how are bones classified?
by location and shape
a bone’s _____ indicates its function
shape
what are the four main types of bones?
long, short, flat, and irregular
_______ bones are longer than they are wide
long
where are long bones are mostly located?
in the limbs
what is the function of long bones?
aid in movement
short bones are usually ________ and tend to be as wide as they are long
cube shaped
short bones provide _____________ with little movement
support and stability
sesamoid bones are a special type of which bone?
short bone
this bone type is embedded within tendons
sesamoid bone
flat bones are also ______ with a large surface area
thin
flat bones __________ (do what?)
attach themselves to muscles
these bones are the “everything else” of bones
irregular bones
irregular bones have a ________________ shape and structure
highly specialized
what are examples of irregular bones?
hip bones and vertebrae
bones typically have a dense, smooth layer of __________ bone tissue on the ___________ and ___________, spongy bone tissue on the ___________
compact on the outside; porous on the inside
compact bone is made of _________, which are the basic structural units that act as weight-bearers in the bone
osteons
what is the haversian canal?
a tunnel that runs through the middle of osteons and contains small blood vessels
_______ bone is less organized than compact bone and no osteons
spongy
the external surface of a bone is rarely smooth and has distinct ____________ that correspond to how the bone and attached muscles and ligaments work together
bone markings
what are the 3 types of bone markings?
projections, surfaces, and depressions/openings
