Ribs Flashcards
What are true ribs and what do they articulate with?
Upper 7 ribs, articulate with sternum via costal cartilages
What are ribs 8-10 called and what do they articulate with?
False ribs, with costal margin
Ribs articulate with which vertebrae?
Thoracic, head and tubercle
Ribs 11 and 12 are called ?
Floating ribs
Ribs 1 and 2 are _________ ribs.
atypical
What attaches on rib 1, scalene tubercle?
M. scalenus anterior
What are scalenus anterior’s attachment points?
From vertebrae, transverse processes C3-6, to scalene tubercle, rib 1
What does scalene anterior do?
raises rib, flexion and rotation of neck
What attaches to the ridge on rib 2?
M. scalenus posterior
What are scalenus posterior’s attachment points?
from vertebrae, transverse processes C5-7 to ridge of rib 2
What does scalenus posterior do?
raises rib, flexion and rotation of neck
Ribs 11 and 12 are __________ ribs.
atypical
What are the non-metric traits of ribs?
Cervical and lumbar ribs, bifid ribs and fused ribs
When placed on a horizontal surfaces the heads rise to a maximum height above the surface in rib 7/8.
True of false
true
Costal cartilages are flat bars of hyaline cartilage. True or false
True
Costal cartilages restrict the movement of thorax. True or false
False, costal cartilages contribute to considerable mobility and elasticity of the thorax
Upper 6 or 7 pairs of costal cartilages articulate directly with sternum via _____ joints.
synovial
7/8 - 10 colastal cargilages form what?
the costal margin
What is a costochondral junction?
Rib and cartilage merge together with convex tip of cartilage being received by the concave rib end anteriorly, not a joint per se. Periosteum and perichondrium are continuous, no movement across this joint
First costosternal joint between costal cartilage 1 and the manubrium is a primary ________ joint, therefore has potential to _______ with age.
cartilaginous, synostose
If manubriocostal synostosis occurs with the first rib then sclerotic manubriosternal synostosis will NOT occur. True or false?
True
If matrical manubriosternal fusion occurs then manubriocostal fusion will occur. True or false?
False, If matrical manubriosternal fusion occurs then manubriocostal fusion will NOT occur.
Costosternal joints 2-7/8 are _______.
Costosternal joints 9 & 10 are rarely _______ and the joint cavity may be absent
synovial, synovial
The first rib articulates with:
T1 only
