Skeletal System Flashcards
rounded process usually articulates with other bone
condyle
narrow, ridgelike projection
crest
opening in a bone
foramen
Relatively deep pit or depression
Fossa
Enlargement at end of bone
Head
tubelike passageway within bone
meatus
process of blood cell formation
hematopoiesis
prominent projections on bone
process
space in the middle of long bone that includes marrow
medullary cavity
cavity within bone
sinus
thornlike projection
spine
interlocking or union between bones
suture
relatively large process
trochanter
small, knoblike process
tubercle
knoblike process usually larger than tubercle
tuberosity
these are four types of bone processes
- condyles (at end, usually articulates)
- trochanter
- tubercle
- tuberosity
two sections of skeleton
axial and appendicular
4 types of structures in skeletal system
- bones
- cartilage
- ligaments
- tendons
adults have ____ bones
206
there are ______ ribs in the thoracic cage
12
when multiple bones form a joint, they _____
articulate
there are ______ true ribs, which attach to the sternum
7
there are _____ false ribs, which don’t attach to the sternum
5
there are ____ floating ribs
2
end of a long bone that articulate with another bone
Epiphysis
Long bone shaft called
diaphysis
which head bone is most posterior and inferior
occipital
which bone makes up the forehead
frontal
which bones incase the skull on the top sides?
parietal
base of nasal septum, divides into right and left
vomer
near nasal bone, a little posterior
lacrimal
dense connective tissue covering bone (also helps repair)
Periosteum
cell that deposits bony matrix, resulting in bone growth
osteoblast
this part of the bone is made of inorganic salts and collagen that form an ECM
Periosteum
where blood vessels and nerves go in bones
central canal
these connect the central canals perpendicular
Perforating canals (volkmann’s canals)
osteo____ build up bone and osteo____ break it down
blasts, clasts
the process of osteoblasts taking calcium from blood and depositing on bone
calcium deposition
process of osteoclasts taking calcium from the bone and depositing back to blood
calcium resorption
condition where rate of bone resorption exceeds formation
Osteoporosis
hormone that prompts osteoclasts to begin resorption
Parathyroid hormone (PTH)
hormone that prompts osteoblasts to start calcium deposition
calcitonin
bone resorption and deposition is usually balanced until ____, when ____ levels begin to fall
midlife; estrogen
part of skull that encloses brain
cranium
suture that borders the frontal bone
coronal
suture that borders the parietal bones
sagittal
the parietal bones meet the occipital bone along this suture
lambdoid suture
name along where bone growth occurs; is in between epiphysis and diaphysis
metaphysis or growth plate
bone on the side of the skull that external auditory meatus
temporal bone
the bone that inside the cranium makes a bat shape
sphenoid bone
this bone starts in nose, projects up into skull
Ethmoid bone
this small bone is between the eyes
nasal bone
outer part of cheekbones
Zygomatic bones
upper lip and end of cheekbones
maxilla
posterior to maxilla in mouth
Palatine bone
lower jaw
Mandible