Skeletal Flashcards
Periosteum
tough; fibrous tissue covering the outermost part of the bone
Compact (cortical) none
dense, hard bone that forms a protective outer layer
Spongy (cancellous) bone
lighter, not as strong
- contains red bone marrow
medullary cavity
central cavity of the shaft, contains red and yellow bone marrow
endosteum
tissue that line the medullary cavity
red bone marrow
a hematopoietic tissue that produces red blood cells, hemoglobin, white blood cells and thrombocytes
hemopoietic (hematopoietic)
pertaining to the formation of red blood cells
yellow bone marrow
a fat storage area
cartilage
a smooth, rubbery connective tissue that acts as a shock absorber between bones (makes up the flexible parts of the skeleton like the outer ear and the tip of the nose)
articular cartilage
covers the surface of bones where they form joints
- protects joints from rubbing against each other, allows for smooth movement
meniscus
curved, fibrous cartilage found in some joints (e.g. the knee, jaw)
Diaphysis
the shaft of the long bone
epiphysis
the ends of the long bone
foramen
an opening in the bone that allows blood vessels, nerves, and ligaments to pass
process
a surface of the bone that acts as an attachment for muscles or tendons
joints (articulations)
the union point of two or more bones
fibrous joint
holds bones tightly together with dense layers of connective tissue
- known as sutures in an adult
- newborns have soft fibrous joints
fontanelles
soft spots of a newborn’s skull
cartilaginous joint
allows minimal movement, consist of bones connected completely by cartilage (e.g. where the ribs connect to the sternum, pubic symphysis)
synovial joint
points where two bones articulate to allow a variety of motion
- described based on their type of motion
ball and socket joint
allows a wider range of movement (e.g. shoulders and hips)
hinge joint
allows movement in a single direction/plane (e.g. elbows, knees)
synovial capsule
outermost layer of strong fibrous tissue that surrounds the joint like a sleeve
synovial membrane
lines the synovial capsule, secretes synovial fluid