ANAT 214 Lecture Notes - Lecture 6: Brachiocephalic Artery, Subclavian Artery, Abdominal Cavity
25 Jan 2018
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Document Summary
It is the only site of entry or exit of structures associated with the lungs: the two sacs allow frictionless movement for expansion and contraction, the heart is in the middle mediastinal. If the diaphragm movement is not okay during development, the fetus can have under developed lungs. If there was a hole in the diaphragm, the organs would float up into the abdominal cavity. Smoking mothers affect the contraction of the diaphragm which causes lung problems in the fetus. The heart: under the visceral pericardium there are vessels, fat and muscles, there are two pumps in the heart that run in parallel, every pump, blood goes to the lungs and to the body. Lung relationship with the heart: right lung, has three lobes separated by a horizontal fissure and an oblique fissure, each lobe can be divided into bronchopulmonary segments that each have their own artery, vein and lymphatics.
