Chapter 3 - Thoracic and Ribs Flashcards
Location of spinous processes in thoracics…
T1-3 = at the level T4-6 = 1/2 segment below T7-9 = 1 segment below T10 = 1 segment below T11 = 1/2 segment below T12 = at the level
Spine of scapula - level
T3
Inferior angle of scapula - level
T7 SP (so T8 body)
Sternal notch - level
T2
Sternal angle - level
Attaches to what?
T4
Rib 2
Nipple - dermatome
T4
Umbilicus - dermatome
T10
Main movement of upper/mid thoracics
Main movement of lower thoracics
Rotation
F/E (like lumbars)
Attachments of the diaphragm
Xyphoid process
Ribs 6-12
Bodies and intervertebral discs of L1-L3
Intercostals - actions (2)
Elevate ribs in inhalation
Prevent retractions during inhalation
2 primary muscles of respiration
Diaphragm
Intercostals
Secondary muscles of respiration (5)
Scalenes Pectoralis minor Serratus anterior and posterior Quadratus lumborum Latissimus dorsi
Typical ribs
What makes them typical?
3-10
Head, neck, tubercle, angle, shaft
Articulate w/ corresponding vertebrae and one above
Atypical ribs
Why?
1, 2, 11, 12
1 = articulates w/ T1 only, no angle 2 = large tuberosity on shaft for serratus anterior 11/12 = no tubercles, only articulate w/ their vertebrae
True ribs
Why?
1-7
Attach to sternum directly via costal cartilage