thoracic wall Flashcards
bones of the thorax: demonstrate the main anatomical features and surface landmarks of the thoracic vertebrae, ribs and sternum; describe the anatomy of the joints between the ribs, vertebrae, costal cartilages and sternum; explain their contribution to the movements of ventilation
surface landmarks of thoracic vertebra, ribs, sternum
Netter’s anatomy cards
how many thoracic vertebrae are there
12
how many pairs of ribs and costal cartilages are there
12 attached to respective thoracic vertebrae
define sternum
breastbone in centre of chest that connects to the ribs via cartilage
what are the true ribs and what do they reach
1-7; reach sternum
what are the false ribs and what do they reach
8-10; reach costal carilage above
what are the floating ribs and why are they called this
11-12; lack anterior attachment
what are articulations
joints
where are articulations located
with vertebral column via head and tubercle (sticks out of bony structure to provide attachment; facets are where bones join to other bones), and with costal cartilages
what is the costal margin
attachment of ribs to diaphragm
what is the name of the space between each rib
intercostal space
what are the 3 parts of the sternum
manubrium, body, xiphoid
where do the 1st costal cartilages attach to on the sternum
manubrium
where do the 2nd costal cartilages attach to on the sternum
sternal angle (manubriosternal joint)
where do the 3rd-7th costal cartilages attach to on the sternum
body
where do the 8th-10th costal cartilages attach to on the sternum
cartilage above (joins to xiphoid)
where do the 11th-12th costal cartilages attach to on the sternum
nothing - they are floating
what is the thoracic inlet (superior thoracic aperture) formed of
1st thoracic vertebra (T1), 1st ribs, manubrium
what are the contents of the thoracic inlet
great vessels heading for neck and upper limb, oesophagus, trachea, nerves and lymphatics
movement of ribs to increase chest volume
ribs move out and up to increase thoracic volume anteroposteriorly and mediolaterally, assisting in changing pressure
diagram of the parts of the vertebra
diagram from slide 11 of living anatomy
