HPP LEC CHAP 6 Flashcards
Bone, cartilage, tendons, and ligaments of the
skeletal system are
connective tissues
a tough, ropelike protein
Collagen
e large molecules consisting of
many polysaccharides attaching to and encircling
core proteins
Proteoglycans
The matrix always contains collagen, ground
substance, and other organic molecules, as well
as water and minerals
none
form large aggregates and
attract water
proteoglycans
The extracellular matrix of tendons and ligaments
contains large amounts of collagen fibers, making
these structures very tough, like ropes or cables
none
extracellular matrix of cartilage contains
collagen and proteoglycans
makes cartilage tough
Collagen
make it smooth and
resilient
water-filled proteoglycans
is relatively rigid, but it
springs back to its original shape after being
bent or slightly compressed
cartilage
extracellular matrix of bone contains collagen
and minerals, including calcium and phosphate
none
lend flexible strength
to the bone
ropelike collagen fibers
gives bone compression
(weight-bearing) strength.
mineral
form of
calcium phosphate crystals
hydroxyapatite
four bone shapes
long, short, flat, irregular
are longer than they are wide
long bones
are approximately as wide as they
are long
short bones
have a relatively thin, flattened shape
flat bones
shapes that do not fit readily
into the other three categories
irregular bones
compact bone
tissue
shaft
ends spongy bone tissue
Epiphysis
covers epiphyses
reduces friction
Articular cartilage
site of growth
between
diaphysis and
epiphysis
Epiphyseal plate
center of
diaphysis red or
yellow marrow
Medullary cavity
membrane around
bone’s outer
surface
Periosteum
membrane that
lines medullary
cavity
Endosteum
is the location of blood forming
cells
red marrow
mostly fat
yellow marrow
structural unit of
compact bone
includes lamella,
lacunae, canaliculus,
central canal, osteocytes
Osteon
rings of bone matrix
Lamella
spaces between lamella
Lacunae
tiny canals
transport nutrients
and remove
waste
Canaliculus
center of osteon
contains blood vessels
Central canal:
It is located at the epiphyses of long bones
and center of other bones
Spongy bone
are interconnecting
rods, and spaces that contain marrow
trabeculae
responsible for the formation of
bone and the repair and remodeling of bone
Osteoblasts
cells that maintain bone matrix and
form from osteoblast after bone matrix has
surrounded it
Osteocytes
contribute to bone repair and
remodeling by removing existing bone, called
bone reabsorption
Osteoclasts
Bone formation that occurs within connective
tissue membranes
intramembranous
ossification
Bone formation that occurs inside hyaline
cartilage
endochondral ossification
the formation of bone by osteoblasts.
Ossification
occurs by the deposition of new
bone lamellae onto existing bone or other
connective tissue
Bone growth
As osteoblasts deposit new bone matrix on the
surface of bones between the periosteum and
the existing bone matrix, the bone increases in
width, or diameter
appositional growth
Broken bone causes
bleeding and a blood clot
forms
forms which is a fibrous network
between 2 fragments
Callus
hole
foramen