Mechanics of Ventilation Flashcards
Functions of thorax
Move with ventilation
Protect organs
What happens to the thorax as you age?
It widens and looses compliance (stiffer)
Loose AP diameter, ribs become more horizontal
Which ribs only articulate with 1 vertebral body?
1, 10, 11, 12
Is the thorax open chain or closed chain?
Closed chain, excluding ribs 11 and 12 (open chain)
What do ribs articulate with?
Bodies, transverse processes and disc;
1, 10, 11, 12 with facets of body only
What is the axis of motion through in the Ribs?
Through the CV and the CT joints
What plane is the axis of rotation for the upper ribs?
close to the frontal plane
What plane is the movement for the upper ribs in?
sagittal plane
What plane is the axis of rotation for the lower ribs?
close to the sagittal plane
What plane is the movement for the lower ribs in?
frontal plane
What can the upper and lower ribs be compared to?
Upper ribs = pump handle
lower ribs = bucket handle
Ribs 1-10 articulate posteriorly with vertebral bodies by what joint(s)?
2 synovial joints: CV and CT
Describe the osteokinematic motion of the ribs:
ribs moving on the vertebral spine
Describe the expansion of the ribs:
doesn’t incorporate movement of the bones
Central tendon of diaphragm is
non-contractile