Descripteur : Direction of carcass canals tubes zone B (IW)

Type du descripteur : categorical

NB: Convention: Tube begins on intervallum side.

Zone B: Cavity central side.

Canal: Pore modified by skeletal structure thikening or by lintels streching. Canal length is greater than perforation diameter.

Lintel: Skeletal structure separating and bounding adjacent pores/canals.

Carcass: Part of wall on intervallum side.

IW: Inner wall.


Upwardly opening

Upwardly opening: Opening on intervallum side is lower down than the other one.

Horizontal to upwardly opening AND Lateral opening

Some canals tubes have a horizontal opening, others have a upwardly opening and each may be laterrally opened.

Horizontal opening: Opening on intervallum side is as high as the other one.

Upwardly opening: Opening on intervallum side is lower down than the other one.

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Lateral

Horizontal to upwardly opening

Some canals tubes have a horizontal opening, others have a upwardly opening.

Horizontal opening: Opening on intervallum side is as high as the other one.

Upwardly opening: Opening on intervallum side is lower down than the other one.


Hiérarchie

Constitution of carcass canal system (IW)
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 |_ Direction of carcass canals tubes zone B (IW)

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