Observe transverse, tangential, and radial sections of a Pinus stem on demonstration. Identify the xylary rays in each section. Why is lateral conduction necessary?

Human Anatomy & Physiology (11th Edition)
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ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Observe transverse, tangential, and radial sections of a Pinus stem on demonstration. Identify the xylary rays in each section. Why is lateral conduction necessary?

Pith
Resin
canal
Resin
canal
Uniseriate
medullary ray
Resin
canal
Primary
xylem
Resin
canal
Phloem
Phloem
Biseriate
medullary.ray
Bordered pit
Secondary Secretory
xylem
cells
Medullar
ray
Walls of
fibre-tracheids
Medullary
Vascular
cambium
Parenchymatous
\cortex
Xylem
Fibre-tracheids
transverse section of pinus stem
tangential section of pinus stem
radial section of pinus stem
Transcribed Image Text:Pith Resin canal Resin canal Uniseriate medullary ray Resin canal Primary xylem Resin canal Phloem Phloem Biseriate medullary.ray Bordered pit Secondary Secretory xylem cells Medullar ray Walls of fibre-tracheids Medullary Vascular cambium Parenchymatous \cortex Xylem Fibre-tracheids transverse section of pinus stem tangential section of pinus stem radial section of pinus stem
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