Thorax & Abdomen Anatomy Flashcards
what are the borders of the thorax inlet & wall
anterior - sternum
lateral - ribs + costal cartilages + 3 muscle layers
posterior - thoracic vertebrae + IV discs
what are the openings of diaphragms
caval opening = T8
esophageal hiatus = T10
aortic hiatus = T12
what passes through diaphragmatic breathing
esophagus, descending aorta, IVC
mammillary glands extend vertically from
ribs 2 to 6
what surrounds nipples
areola
___ opens into nipple
15 - 20 lactiferous ducts
lymphatic drainage of mammillary gland
75% axillary lymph nodes
rest via parasternal & intercostal nodes
what are the 2 layers of lungs
parietal & visceral / pulmonary
what are the different parietal layers
costal, diaphragmatic, cervical, mediastinal pleura
what do folds of parietal pleura act as
reserve spaces for lungs to expand during deep inspiration
what does visceral pleura closely invest
lung except hilum & lung root attachment
what do lung roots do
anchors medial surface of lungs to mediastinum
what is found in lung roots
pulmonary artery
pulmonary vein
pulmonary ligament
bronchus
where do lung roots lie opposite to
T5-7 vertebrae
what are lung roots
tubular sheath of mediastinal pleura
what do pulmonary artery & vein carry
pulmonary artery = deoxygenated blood
pulmonary vein = oxygenated blood
where is apex of lung
2.5 cm above clavicles
4 cm above 1st ribs
what is below diaphragm
right = liver
left = liver, stomach, spleen
what are the lobes of the lungs
right = upper, middle, lower
left = upper, lower
what are the fissures of the lungs
right = 2 fissures (oblique & horizontal)
left = 1 fissure (oblique)
what do oblique fissures act as
plane of cleavage
what are the recesses of pleura
costodiaphragmatic & costomediastinal recesses
components of right hilum
above downwards
- epartial bronchus
- pulmonary artery
- principle bronchus
- lower pulmonary vein
below backwards
- upper pulmonary vein
- pulmonary artery
- bronchus
components of left hilum
above downwards
- pulmonary artery
- principle bronchus
- lower pulmonary vein
below backwards
- upper pulmonary vein
- pulmonary artery
- bronchus
right vs left lung: size
right = larger, wider, shorter
left = smaller, narrower, longer
right vs left lung: lobes & fissures
right = 2 fissures, 3 lobes
left = 1 fissure, 2 lobes
right vs left lung: lung root contents
right
- 2 bronchi (eparterial & hyparterial)
- 1 pulmonary artery
- 2 pulmonary veins
Left
- 1 bronchi
- 1 pulmonary artery
- 2 pulmonary veins
right vs left lung: cardiac notch
right = no cardiac notch
left = present & below it lies lingula
right vs left lung: bronchial artery
right = 1 bronchial artery
left = 2 bronchial artery
types of pericardium
serous (parietal & visceral) & fibrous
what layers form the heart
visceral pericardium, myocardium, endocardium
what does right side of heart pump
deoxygenated blood from SVC & IVC to lungs