Ch.3-Skeletal System Flashcards
What does the skeletal system consist of?
bones, bone marrow, cartilage, joints, ligaments, synovial membrane, synovial fluid, and bursa
What are 5 functions of the skeletal system?
- framework for the body
- support and protect internal organs
- allow for body movement
- store calcium
- store red bone marrow
The tough fibrous tissue that forms the outmost covering of bone.
Periosteum
The dense, hard, and very strong bone layer that forms the protective out layer.
Compact bone
Lighter, and less strong type of bone that is commonly found in the ends and inner portions of long bones.
Spongy bone
Cavity located in the shaft of a long bone and is surrounded by compact bone
Medullary cavity
Tissue that lines the medullary cavity.
Endosteum
Located within the spongy bone and manufactures red blood cells, hemoglobin, white blood cells, and thrombocytes.
Red bone marrow
Located within the medullary cavity and functions as a fat storage area.
Yellow bone marrow
Smooth, rubbery, blue-white connective tissue that acts as a shock absorber between bones, and makes up the flexible parts of the skeleton.
cartilage
Covers the surfaces of bones where they come together to form joints.
articular cartilage
Curved fibrous cartilage found in some joints, such as the knee, and jaw.
meniscus
The shaft of a long bone
diaphysis
Wide end of the long bone, covered in articular cartilage.
epiphysis
Opening in a bone through which blood vessels, nerves, and ligaments pass.
foramen
Normal projection on the surface of a bone that serves as an attachment for muscles and tendons.
process
The place of union between two or more bones
Joints or articulations
Inflexible layers of dense connective tissues which holds the bones tightly together, such as in the skull.
fibrous joints or sutures
Flexible soft spots present on the skull of newborns.
fontanelles
Type of joint that allows slight movement and consist of bones connected entirely by cartilage such as where the ribs connect to the sternum.
cartilaginous joints
Cartilaginous joint that allows some movement to facilitate childbirth
pubic symphysis
Joint where two bones articulate to permit a variety of motions such as ball and socket joints or hinge joints.
synovial joint
The outmost layer of a synovial joint consisting of fibrous tissue that resembles a sleeve as it surrounds the joint.
synovial capsule
Lines the synovial capsule and secretes synovial fluid
synovial membrane