Flashcards in Sternum Deck (10):
1
What is the name given to the segments of the sternum?
sternabrae (for sternal bodies)
2
How many primary centers of ossification appear in the manubrium?
1-3 centers
3
How many primary centers of ossification appear in the corpus sterni?
typically 6
4
What are the locations of the primary centers of ossification in the corpus sterni?
one in each of the first two sternabrae and bilateral centers in the last two sternabrae
5
Primary centers of ossification for the sternum first appear at what age?
fifth fetal month
6
In what part of the sternum will a secondary center of ossification appear?
the xiphoid process
7
When does the xiphoid process first demonstrate a center of ossification?
sometime during or after 3 years old
8
When will the synchondroses between sternabrae begin to ossify?
during puberty
9
Synchondroses of the corpus sterni will fuse together beginning with which sternabrae?
- the lower sternabrae fuse first
- they ossify in a caudal to cranial direction
10