Skeletal 2 Flashcards
what does an angle represent on a bone?
a bend
what are the characteristics of the 3 arches of the foot? (3) (DEK)
1) distribute weight
2) elastic
3) keep weight off the medial plantar surface
which ribs are considered false ribs?
8-12
why are ribs 8-12 considered false ribs?
they are not attached directly to the sternum
what type of opening is a foramen?
hole
how is the human skeleton divided?
into 2 part, axial and appendicular
how many bones form the nasal cavity?
8
what does the appendicular skeleton consist of?
the limbs with their girdles that attach them to the axial skeleton
what type of ridge is a crest or crista?
prominent ridge
what type of depression is a fovea?
little pit
what part of the nasal cavity is the ethmoid bone?
the roof, septum, lateral wall
what does the margin or border represent of a bone?
the edge
what parts of the orbit make up the medial wall?
lacrimal, ehmoid and palatine
what 7 bones make up the orbit?
1) frontal
2) ethmoid
3) lacrimal
4) maxillary
5) sphenoid
6) palatine
7) zygomatic
what type of depression is a notch?
depression in the margin of a bone
what does the head represent of a bone?
enlarged, often rounded end
what are ribs 8-10 called?
vertebrochondral
what type of ridge is a line or linea?
low ridge
what is another name for true ribs?
vertebrosternal
what type of projection is a tubercle?
small, rounded bump
how many skull bones have air pockets (sinuses)?
4
what type of depression is a fossa?
general term for depression
what does a facet represent on a bone?
small, flattened articular surface
what function do the sinuses have for the skull bone?
1) lighten the bones
2) affect speech
3) produce mucous for the nasal cavity
how many bones does the posterior portion of the foot consist of?
7 tarsal bones
how many bones does the axial skeleton contain?
80
where does the medial longitudinal arch run on the foot?
anterior-posterior
what 8 bones form the nasal cavity?
1) nasal
2) frontal
3) ethmoid
4) sphenoid
5) palatine
6) maxilla
7) vomer
8) inferior nasal concha
how many bones is the human skeleton composed of?
about 206
what type of opening is a sinus or labyrinth?
a cavity
what does the neck represent of a bone?
constriction between head and body
how are true ribs connected?
they connect to the sternum by separate costal cartilages