Med Term 3 Flashcards
system that consists of the bones, bone marrow, cartilage, joints, ligaments, synovial membrane, synovial fluid, and bursa.
skeletal system
the tough, fibrous tissue that forms the outermost covering of bone
periosteum
means bone
oste
the dense, hard, and very strong bone that forms the protective outer layer of bones
compact bone
the lighter, and not as strong or compact bone, found in the ends and inner portions of long bones, housing red bone marrow
spongy bone
cavity located in the shaft of a long bone and is surrounded by compact bone.
medullary cavity
pertaining to the inner section
medullary
the tissue that lines the medullary cavity
endosteum
hemopoietic tissue that manufactures red blood cells, hemoglobin, white blood cells, and throbocytes
red bone marrow
means pertaining to the formation of blood cells
hemopoietic
pertaining to formation
-poietic
functions as a fat storage area, composed chiefly of fat cells and located in the medullary cavity
yellow bone marrow
the smooth, rubbery, blue-white connective tissue that acts as a shock absorber between bones.
cartilage
covers the surfaces of bones where they come together to form joints
articular cartilage
the curved fibrous cartilage found in some joints, such as the knee and temporomandibular joint of the jaw
meniscus
the shaft of a long bone
diaphysis
the wide end of the long bone, covered with articular cartilage
epiphysis
the end of the bone located nearest to the midline of the body
proximal epiphysis
end of the bone located farthest away from the midline
distal epiphysis
an opening in a bone through which blood vessels, nerves, and ligaments pass
foramen (foramina, plu.)
a normal projection of the surface of a bone that serves as an attachment for muscles and tendons
process
the bony projection located on temporal bones just behind the ears
mastoid process
the place of union between two or more bones
joints, or articulations
hold the bones tightly together, consisting of inflexible layers of dense connective tissue
fibrous joints, aka sutures
flexible soft spots normally present on the skull of a newborn
fontanelles, aka soft spots
joints that allow only slight movement and consist of bones connected entirely by cartilage
cartilaginous joints
the cartilaginous joint that allows some movement to facilitate childbirth
pubic symphysis
a joint created where two bones articulate to permit a variety of motions, consisting of several components
synovial joint
to come together
articulate
joints, such as the hips and shoulders, allow a wide range of movement in many directions
ball and socket joints
joints such as the knees and elbows that are synovial joints that allow movement primarily in one direction or plane
hinge joints
the outermost layer of strong fibrous tissue that resembles a sleeve as it surrounds the joint
synovial capsule
lines the capsule and secretes synovial fluid
synovial membrane
flows within the synovial cavity and acts as a lubricant to make the smooth movement of the joint possible
synovial fluid
bands of fibrous tissue that form joints by connecting one bone to another, or to cartilage
ligaments
a fibrous sac that acts as a cushion to ease movement in areas that are subject to friction, such as the shoulder, elbo, knee, where a tendon passes over a bone
bursa (plu. bursae)
protects the major organs of the nervous, respiratory, and circulatory systems
axial skeleton
pertaining to an axis
axial
makes body movement possible and also protects the organs of digestion, excretion, and reproduction
appendicular skeleton
referring to an appendage
appendicular
anything that is attached to a major part of the body
appendage
shoulders, arms, forearms, wrists, and hands
upper extremities
hips, thighs, legs, ankles, feet
lower extremities
consists of the eight bones that form the cranium, 14 that form the face, and 6 in the inner ear
skull
made up of 8 flat bones that enclose the brain
cranium
means skull
crani
forms the forehead
frontal bone
two bones that form most of the roof and upper sides of the cranium
parietal bones
forms the posterior floor and walls of the cranium
occipital bone
two bones that form the sides and base of the cranium
temporal bones
forms part of the base of the skull and parts of the floor and sides of the orbit
sphenoid bone
bony socket that surrounds and protects the eyeball
orbit
forms part of the posterior portion of the nose, the orbit, and the floor of the cranium
ethmoid bone
the six tiny bones of the middle ear
auditory ossicles
the opening of the external auditory canal of the outer ear, located in the temporal bone on each side of the skull
external auditory meatus
external opening of a canal
meatus
two bones that form the upper part of the bridge of the nose
nasal bones
two bones that articulate with the frontal bone, also known as the cheekbones
zygomatic bones
two bones that form most of the upper jaw
maxillary bones, aka maxillae (sin. maxilla)
two bones that form part of the hard palate of the mouth and the floor of the nose
palatine bones
two bones that make up part of the orbit at the inner angle of the eye
lacrimal bones
two bones that are the thin, scroll-like bones that form part of the interior of the nose
inferior conchae (sin. concha)
bone that forms the base for the nasal septum
vomer bone
the cartilage wall that divides the two nasal cavities
nasal septum
the only movable bone of the skull, attached at the TMJ
mandible, aka jawbone
joint where that mandible meets the rest of the skull
temporo-mandibular joint
the bony structure that protects the heart and lungs
thoracic cavity, aka rib cage
12 pair of bones that attach posteriorly to the thoracic vertebrae
ribs, aka costals
first seven pairs of ribs, attached anteriorly to the sternum
true ribs
three pair of ribs attached anteriorly to cartilage that joins with the sternum
false ribs
last two pairs of ribs which are only attached posteriorly
floating ribs
forms the middle of the front of the rib cage and is divided into three parts
sternum, aka breastbone
the bony structure that forms the upper portion of the sternum
manubrium
the bony structure that forms the middle portion of the sternum
body of the sternum
the structure made of cartilage that forms the lower portion of the sternum
xiphoid process
the shoulders, supporting the arms and hands
pectoral girdle, aka shoulder girdle
means structure that encircles the body
girdle
a slender bone that connects the manubrium of the sternum to the scapula
clavicle, aka collar bone
the shoulder blade
scapula (plu. scapulae)
an extension of the scapula that forms the high point of the shoulder
acromion
the bone of the upper arm
humerus (plu. humeri)
the smaller and shorter bone in the forearm, running up the thumb side of the forearm
radius
the larger and longer bone of the forearm, proximal end articulating with the distal end of the humerus to form the elbow joint
ulna
a large projection on the upper end of the ulna, forming the point of the elbow and exposes a nerve that tingles when struck
olecranon process, aka funny bone
eight bones that form the wrist
carpals
the five bones that form the palms of the hand
metacarpals
the 14 bones of the fingers, distal, middle, and proximal
phalanges (sin. phalanx)
supports the head and body, and protects the spinal cord
spinal column, aka vertebral column
a single segment of the spinal column
vertebrae
pertaining to the vertebrae
vertebral
the solid anterior portion of the vertebrae
body of the vertebra
the posterior portion of a vertebra
lamina (plu. laminae)
the opening in the middle of the vertebra in which the spinal cord passes through
vertebral foramen
the first set of seven vertebrae that form the neck
cervical vertebrae, aka C1-C7
pertaining to the neck
cervical
the second set of 12 vertebrae, forming the outward curve of the spine
thoracic vertebrae, aka T1-T12
pertaining to the thoracic cavity
thoracic
the third set of five vertebrae and form the inward curve of the lower spine
lumbar vertebrae
means relating to the part of the back and sides between the ribs and pelvis
lumbar
the slightly curved, triangular-shaped bone near the base of the spine that forms the lower portion of the back
sacrum
forms the end of the spine and is actually made up of four small vertebrae that are fused together
coccyx
these separate and cushion the vertebrae from each other, made of cartilage
intervertebral disks
this protects the internal organs and supports the lower extremities
pelvic girdle, aka pelvis or hips
broad blade-shaped bone that forms the back and sides of the pubic bone
ilium
the slightly movable articulation between the sacrum and posterior portion of the ilium
sacroiliac
means sacrum
sacr/o