ch 10 Flashcards
Main function of bony thorax
expand & deflate during respiration, protect organs of respiratory system
Thin, narrow, flat compact bone
sternum
What is the bone in the middle of sternum like
spongy and is a site for red bone marrow
3 parts of sternum
manubrium, body, xiphoid process
Upper portion closest to chin
manubrium
how big is manubrium
2” in length
longest part of sternum
body
How big is body
4”
What age does the 4 segments of body fuse
25
most inferior portion of the sternum
xiphoid process
What age does the cartilage in xiphoid process ossify
40
Jugular notch is also known as
suprasternal notch, manubrial notch
What level is jugular notch
T2-T3
Where manubrium and the superior portion of body meet
sternal angle
What level is sternal angle
T4-T5
What level is xiphoid tip
T9-T10
Only bony connection between each shoulder girdle and bony thorax are (where clavicles meet manubrium)
sternoclavicular joints
Sternal rib articulations that connect to the sternum
clavicles, 7 pairs of ribs
A short piece of cartilage that articulates with the facets of the sternum
costocartilage
What ribs connect to #7 costocartilage
8,9,10
Floating ribs with no costocartilage
11,12
True ribs
1-7
False ribs
8-12
Vertebral end attaches to ___
thoracic vertebrae
Sternal end attaches to ___
sternum
body of rib, angles downward and forward which is termed the “angle of the rib”
shaft
Consists of a head which attaches to 1 or 2 tspine
vertebral end
on vertebral end, the neck is ___
flattened