Anatomy - Thorax: Cadaver

transversus thoracis muscles

-found on the underside of the sternum

-anchors the ribs to the sternum

-fan-like

external intercostal muscles

internal intercostal muscles

innermost intercostal muscles

deepest layers of internal intercostal muscles

anterior intercostal nerve, artery, vein bundle

on rib cage

posterior intercostal nerve, artery, vein bundle

on posterior wall

internal thoracic artery/vein

diaphragm

thoracic vertebrae

azygos vein

-right of esophagus

-dumps into superior vena cava

hemiazygos vein

-left side

-inferior

-huge

-dumps into azygous vein

accessory hemizygous vein

-left side

-superior

-dumps into left subclavian vein

-follow to azygous

trachea

carina

esophagus

flattened

phrenic nerve

innervate diaphragm

vagus nerve

-central

-either side of esophagus and descending aorta

sympathetic chain

-left side

-along vertebral column

central tendon

-insertion of diaphragm

-superior to diaphragm

-continuous with pericardial sack

right lung

3 lobes:

-superior

-middle

-inferior

horizontal fissure of right lung

between superior and middle lobes

oblique fissure of right lung

between superior/middle lobes and inferior lobe

left lung

2 lobes:

-superior

-inferior

oblique fissure of left lung

between superior and inferior lobes

cardiac notch of left lung

lingula of left lung

-tongue-like

-on superior lobe of left lung

-inferior

parietal pleura

lines the thoracic cavity

visceral pleura

the inner layer of pleura that surrounds each lung

bronchus

passageway leading from the trachea to a lung