A narrow pathology of lung artery dissects _'s general knowledge
The lung artery one is narrow: Merge dome-shapedly and increase the thick diaphragm in three pieces of leaf juncture, dash for ward it in, a hole takes the form of fish's mouth, can lie in the centre or lean to one side, a hole only 2- 3mm of the small one, generally a hole merges the place in juncture of a leaf, often leaves a spine mark that slightly rises about 5- 12mm, most cases and three leaves merge each other, a few is merged for one pair of leaves, petals of reason increase thick often, have the intersection of wart and little tubercle, can form calcified plague while being even, lung the intersection of artery and petals of ring have the one at various degrees to be narrow generally, because the right ventricle is loose because obstruct in blood flow, can produce and continue the taking place right ventricle and flow out the plump narrow and right room of a muscle to expand and cause the tricuspid valve not to close completely.
The lung artery can be after appearing narrowly the shape of the shuttleless loom is expanded, can often extend to the left lung artery, it is obviously greater than the aorta that the lung artery is always dry.
Funnel part narrow to appear two type, first kind narrow for lack of mutual understanding type, below taper portion, the right ventricle flows out one and forms the fibrous muscle diaphragm among ridge and wall bunch on a room, separate and become two hearts not of uniform size of the right ventricle, thin funnel department that expands of the wall is called the third ventricle above it, it is a plump right ventricle of muscle to play, the two separate by the membrane centre there is a narrow narrow passage, the size is invited among 3-15mm, it is often narrow with the lung artery valve that this kind of diaphragm type is narrow to coexist at the same time, it is narrow to call the phenotype. The second kind is narrow for pipeline type, mainly shown as the right ventricle flows out a wall one storey of filling the air muscles is plump, form a longer narrow heart and one of passways, this type is narrow to often always do development with lung artery a ring and lung artery badly, so expand after being not so narrow as lung artery.
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