Lecture 3 Flashcards
Thoracic cage contents
ribs, sternum, thoracic vertebrae
Thoracic cage function
encloses the organs of the thoracic cavity & facilitates ventilation
Suprasternal Notch location
vertebral level T2-T3
Sternal Angle
T4-T5
Xiphisternal joint location
T9
Sternum parts n info
- manubrium
- body
- xiphoid process
- articulates with ribs 1-7
1st Sternocostal Joint type
synarthrosis and a synchondrosis
Sternocostal Joints 2-7
synovial joints
Manubriosternal joint type
symphysis
Xiphisternal joint type
symphysis
Intervetrebal foramen function
spinal nerves travels through horizontally
Vertebral foramen function
allows the spinal cord to travel inferiorly
Thoracic cage joints
- sternocostal: body of sternum
- costochondral: head of true ribs
- interchondral: connection of false ribs
Ribs 1-6 articulations
mostly rotation producing ekevation and depression of sternum in sagittal plane
Ribs 7-10 articulations
gliding that produces elevation and depression of lateral ribs in the transverse plane
Intervertebral disc function
- absorb shock & cushioning
- slight movement
Herniated disc commonly at?
L4/L5 or L5/TS1
- Annulus fibrosis (AF) failure leads to leaking of nucleus fibrosis (NF)
Spinal nerve info
all spinal nerves exit just below the vertrebral body, except for C1 which leaves above, there for there are 8 cervicle nerve exits
Lamina
connection between superior facet and spinous process
Pedicle
connection between veretebral body and transverse process
rib articulation with vertebrae
7th rib articulates with T6/T7 but with the transverse process of T7
Scalene Tubercle
only found on Rib1, provides the groove for the subclavien vein/artery
Tuberosity for Serratus Anterior
only found on the second rib
