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Wood Parts and Anatomy

Taking a Closer Look at Wood
——————————————————————————————
What Have We Learned So Far?

In the this section, we talked about the following terms:

* Phloem
* Cambium
* Rays
* Xylem
* Fibers
* Vessels

We also talked about the following concepts:

* Phloem is located just inside the bark, and is commonly called inner bark.

* Like bark, phloem is not really wood!

* Phloem carries sugar from the leaves to the rest of the tree.

* Cambium is located just underneath the phloem.

* Cambium makes new phloem on the outside, and new xylem on the inside.

* Rays radiate inward from the cambium to the center of the tree.

* Rays move sap to the center parts of the tree.

* Rays can cause dark or light discolorations in wood.

* Xylem is located just inside the cambium.

* All wood, including heartwood and sapwood, is made up of xylem.

* Xylem is made up of long, skinny, straw-like cells called fibers.

* Vessels are large water-carrying cells that run parallel to xylem fibers.

* Hardwoods have vessels; softwoods do not.

* Sometimes the cells next to vessels grow into the vessels, blocking them off.

* If the vessels are plugged you can't blow bubbles through them. ;^>

Well, that sums up our the second part of our Wood Parts and Anatomy lesson. Now it's time to take the great BIG ....

Wood Parts and Anatomy Quiz!

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