Unit 3 Thorax Flashcards
Lumbocostal ligament
TVP of L1 to Rib 12.
Acts like iliolumbar ligament. Acts as anchor.
Intertransverse ligament
Limits how much TVPS can move away from one another, limit flexion but also side bending.
Lateral costotransverse ligament
TVP of vertebrae to rib of same number.
Radiate ligament
Wrapping like circle around the rib head.
Maintains articular relationship of ribs 2-10 with intervertebral space.
Ligamentum Flavum:
Connects adjacent vertebrae in the thoracic and lumbar regions, providing stability and resistance to flexion.
Supraspinous Ligament
Connect spinous processes on superior aspect of SP’s, offering support and limiting excessive flexion.
Interspinous ligament
Connects adjacent spinous processes, offering support and limiting excessive flexion.
Orientation of Superior facets of throacic spine
BUL = Back, upwards slightly and lateral
Orientation of Superior facets of lumbar spine
Back & Medial
Prefered motion of Thoracic spine
Flexion/ extension then side bending
Secondary is rotation
Only long bone of the body that is horizontal
Clavicle
What is the bony articulation between the Upper limb and the trunk
Clavicle
Global motion of the thorax
Increase AP diameter of thoracic cavity
Breathing in motions of the thoracic cage
Angles of ribs descend
Lifts sternum up and out to increase anterior and posterior distance in thoracic cavity to allow us to breathe and lungs expand.
Breathing out motions of the thoracic cage
Angles of ribs ascend when exhaling.
Which ribs dont articulate with a TVP
Ribs 11 & 12 articulate fully with bodies of vertebrae they are named from
Ribs 2-10
Bridge intervertebral space articulating with superior and inferior bodies of vertebrae.
Name for TVP of the vertebrae they articulate with
Ribs 2-7
Articulate costal cartilage that attaches directly to sternum
True ribs
Ribs 8-10
Articulate on costal cartilage of ribs 6 “hijack cartilage of rib 6”
False ribs
TVP’s articulate with
Bodies of vertebrae articulate with
TVP : angle of rib
Body: head of rib
Costal groove
Pathway for intercostal NVAL
Short, shallow depression found along body rib
Lateral to tubercle and travels along the internal surface of the body, adjacent to inferior border and gradually becomes indistinguishable as it travels to ant part of body
What muscle attaches from the sacrum to the head?
Longissimuss
Semispinalis Thoracis
large inferior portion of semispinalis, superficial to suboccipital and multifidus
what is the global motion of the thorax?
increases A-P diameter
Rib 1 articulates with
Directly with body of T1 posteriorly
Manubrium anteriorly
