Chapter 3- The Skeletal System Flashcards
ankyl/o
Crooked, bent, stiff
burs/o
Bursa
Chondr/i, chondr/o
Cartilage
cost/o
Rib
crani/o
Skull
-desis
To bind, tie together
kyph/o
Bent, hump
lord/o
Curve, swayback, bent
-lysis
Loosening or setting free
myel/o
Spinal cord, bone marrow
oss/e, oss/i, ost/o, oste/o
Bone
scoli/o
Curved, bent
spondyl/o
Vertebrae, vertebral column, backbone
synovi/o, synov/o
Synovial membrane, synovial fluid
Periosteum
Tough, fibrous tissue that forms the outer most covering of the bone.
Compact bone
Cortical bone/ The dense, hard, and very strong bone that forms the protective outer layer of bones.
Spongey bone
Is porous, which makes it lighter and weaker than compact bone.
Medullary cavity
The central cavity located in the shaft of long bones, where is surrounded by compact bone.
Endosteum
The tissue that lines the medullary cavity.
Hemopoietic
Pertaining to the formation of blood cells.
Cartilage
The smooth, robbery, blue-white connective tissue that acts as a shock absorber between bones.
Articular cartilage
Covers the surfaces of bones where they come together to form joints.
Meniscus
Curved, fibrous cartilage found in some joints, such as the knee and the temporomandibular joint of the jaw.
Diaphysis
The shaft of a long bone.
Epiphyses
The wider ends of long bones such as the femurs of the legs.
Foramen
Opening in a bone through which blood vessels, nerves, and ligaments pass.
Process
A normal projection on the surface of a bone that most commonly serves as an attachment for a muscle or tendon.
Fibrous joints
Consisting of inflexible layers of dense connective tissue, hold the bones tightly together.
Fontanelles
Soft spots/ normally present on the school of a newborn.
Cartilaginous joints
Only allow slight movement and consist of bones connected entirely by cartilage.
Pubic symphysis
Allow some movement to facilitate childbirth.
Synovial joint
Is created where two bones articulate to permit of variety of motions.
Synovial capsule
Outer most layer of strong fibrous tissue that resembles a sleeve as it surrounds the joint.
Synovial membrane
It’s the capsule and secretes synovial fluid.
Synovial fluid
Falls within the synovial cavity, acts as a lubricant to make this move movement of the joint possible.
Ligaments
Band of fibrous tissue that form joints by connecting one bone to another bone or by joining a bone to cartilage.
Bursa
A fibrous sac that acts as a cushion to ease movement in areas that are subject to friction.
Ex: The shoulder, elbow, and knee where a tendon passes over a bone.
Axial skeleton
- Protects the major organs of the nervous, respiratory, and circulatory systems.
- Consists of 80 bones.
Appendicular Skeleton
- Makes body movement possible and also protects organs of digestion, excretion, and reproduction.
- Consists of 126 bones.
Skull
Consist of the 8 bones that form the cranium, 14 bones that form the face, and 6 bones in the middle ear.
Cranium
The portion of the school that encloses and protects the brain.
Frontal bone
The anterior portion of the cranium that forms the forehead.
Parietal bones
Are two of the largest bones of the school. Together they form most of the roof and upper sides of the cranium.
Occipital bone
Forms the back part of the skull and base of the cranium.
Temporal bones
Form the sides and base of the cranium.
External auditory meatus
The opening of the external auditory canal of the outer ear.
Sphenoid bone
- And irregular, wedge shaped bone at the base of the skull.
- makes contact with all of the other cranial bones and helps form the base of the cranium, the sides of the skull, and the floors and sides of the eye sockets.
Ethmoid bone
Light, spongy bone located at the roof and sides of the nose.
Auditory ossicles
- The three tiny bones located in each middle ear.
- Malleus, incus, and stapes.
Nasal bones
The upper part of the bridge of the nose.
Zygomatic bones
Cheekbone/articulate with the frontal bone that makes up the forehead.
Maxillary bones
Form most of the upper jaw.
Palatine bones
Form the anterior part of the hard palate of the mouth and floor of the nose.
Lacrimal bones
Make up part of the orbit (socket of eye) at the inner angle.
Inferior conchae
The thin, scroll like bones that form part of the interior of the nose.
Vomer bone
Forms the basis for the nasal septum.
Mandible
Jawbone/ The only movable bone of the skull. The mandible is attached to the skull at the temporomandibular joint (TMJ).
Thoracic cavity
Rib cage/ The bony structure that protects the heart and lungs.
True ribs
- Attach anteriorly to the sternum.
- The first 7 ribs
False ribs
- Attach anteriorly to cartilage that connects them to the sternum.
- Next 3 ribs
Floating ribs
- Only attached posteriorly to the vertebrae.
- The last 2 pairs
Sternum
Breast bone/ a flat, dagger-shaped bone located in the middle of the chest.
Manubrium
The bony structure that forms the upper portion of the sternum.
Body of the sternum
The bony structure that forms the middle portion of the sternum.
Xiphoid process
The structure made of cartilage that forms the lower portion of the sternum.
Pectoral girdle
Supports the arms and hands.
Clavicle
Collar bone/ slender bone that connects the manubrium of the sternum to the scapula.
Scapula
Shoulder blade
Acromion
And extension of the scapula that forms the high point of the shoulder.
Humorous
The bone of the upper arm.