Anatomy of the lung Flashcards
what is the thorax
just the rib cage
between neck and abdomen
what is the chest
rib cage and pectoral girdle ( clavicle, upper humerus and scapula)
what is the superior thoracic aperture/ anatomical thoracic inlet/ thoracic outlet
opening at the top of the thoracic cavity allowing connections of structures between the thorax and the neck
inferior thoracic aperture- anatomical thoracic outlet
formed by 12 the thoracic veterbra - bottom hole
what passes through the superior thoracic aperture
right and left subclavian arteries and veins
function of mediastinum
conduit for structures transversing the thorax on their way to the abdomen
what are the compartments of the mediastinum
Superior mediastinum
Inferior mediastinum - anterior , middle and posterior mediastinum
divisions of thoracic cavity counting heart thymus gland and portions of the oesophagus and trachea
where does the superior mediastinum run between
line of sternal angle and terminates at the superior thoracic aperture ( T1-T4
at what vertebral level can you find your your sternal angle
T4-T5
what is the manubrium
superior portion of the sternum
what is the jugular notch
the suprasternal notch is a dip in the neck between the clavicles
borders of the superior mediastinum
superior - thoracic inlet
infer - continues with the infer mediastinum at level of the sternal angle
posterior - vertebral bodies of T1-T4
lateral - pleura of the lungs
What things can be found in the superior mediastinum
arch of the aorta superior vena cava vagus nerve phrenic nerve thymus oesaphagus thoracic duct
the middle mediastinum as anterior and posterior borders to the pericardium, lateral to mediastinal pleura of the lungs and superiorly to sternal angle line and inferior to the diaphragm
true or false
true
Which major lymph nodes are found in the medial mediastinum and are associated with the trachea and bronchi of the respiratory system
tracheobronchial lymph nodes
which mediastinum contains no major structures and accommodates loose connective tissue and in infants the thymus extends inferably into it
anterior mediastinum
what is contained in the posterior mediastinum
thoracic duct
oesophagus
thoracic aorta
sympathetic trunk
at what vertebral level does the mediastinum end
T12
xiphoid process level
T10(T9)
at what level does counting of the ribs start?
2nd as first should normally be covered by clavicle
what is the infrasternal angle
cartilages of 10-7 ribs
Thoracic levels refer to someone lying in a supine position
Gravity takes its toll on viscera when you stand
Four type be clear thoracic vertebral levels thoracic rib levels thoracic costal cartilages levels thoracic dermatome levels e.g. thoracic vertebral level - T10 thoracic rib levels 0 none thoracic costal cartilages levels is T7 throaci dermatome level is T5
In patients with COPD why are there clavicles visible
barrel chest - lungs are chronically overinflated with air so the rib cage stays partially expanded all the time