Chest Flashcards
what is the skeleton of the thorax
an osseo-cartilaginous cage
what does the osseo-cartilaginous cage do
contains and protects principal organs of respiration and circulation
what is the posterior surface of the boney thorax formed by
12 thoracic vertebrae and posterior parts of ribs
what is the anterior surface of boney thorax formed by
sternum and costal cartilages
what is the thoracic cavity framed by
12 pairs of ribs
where do the ribs connect at
posterior thorax to thoracic vertebral bodies
in anterior thorax, how many pairs are attached to the sternum
first 7 pairs
what are the ribs attached by in order to attach to the sternum
costal carilage
which ribs are attached to each other
8, 9, and 10
what are ribs 8, 9, and 10 attached by
costal cartilage that attaches to sternum
which ribs are known as floating ribs
11 and 12
why are they known as floating ribs
not attached in any way to sternum
which ribs are considered “true ribs”
first 7 pairs
what are the remaining 5 pair of ribs called
‘false ribs’
what is an elongated, flattened bone
sternum
what forms the middle portion of the anterior thoracic wall
sternum
what does the upper end of sternum support
clavicles
what does the lateral margins of sternum articulate with
the cartilages of first 7 pair of ribs
how many parts of the sternum is there
3
what are the 3 parts of sternum
manubrium, body, and xiphoid process
what are other boney features usually visualized when imaging thorax
clavicles and scapulae
what is a short bone that connects the arm to the body
clavicle
where does the clavicle connect the arm to the body at
just above first rib
what does the clavicle articulate with medially
manubrium at SC joint