Axial Skeleton Flashcards
How many types of bones are there?
There are 5 different
kinds of bones:
-Long bones
-Flat bones
-Short bones
-Irregular bones
-Sesamoid bone (only
one)
Ephiseal Plate
when the bone is still growing
Epiphyseal line
when the bone is mature
Why is Sinus important?
*Sinuses are important in voice resonance
How does Sinuses help with the skull?
*Sinuses lighten the weight of the skull
What does the cervical have?
C1-C7 have transverse
foramina
What makes C2-C6 special?
C2-C6 have bifid process
What is the atlas?
articulates
with the skull, with the
occipital condyles and does
not have a body, nor a
spinous process
C2 Axis
notice the dens
makes a pivot point on
which skull pivots. It
articulates with C1 to allow
the ‘no movement
Herniated Disc
when the softer nucleus
pulposus protrudes through the harder outer annulus fibrosis (fibrocartilage) because of (constant) excessive pressure
Ribs
Three kinds of ribs:
*Vertebral sternal - True Ribs (1-7)
*Vertebrochondral - False ribs (8-10)
Attach to each other and to rib 7 by cartilage
*Vertebral - Floating (11,12)
Long bones
longer than they are wide, with a thick compact bone exterior
Short bones
equal in length and width and contain a thick interior of spongy bone covered by a thin veneer of compact bone.
Flat bones
relatively flat, but may be curved, and contain a thin, spongy bone inte- rior covered by a thin veneer of compact bone.
Irregular bones
do not easily fit into any of these categories.