system
Context: Wool is the textile fiber obtained from sheep and other animals, including cashmere and mohair from goats, qiviut from muskoxen, angora from rabbits, and other types of wool from camelids. Wool mainly consists of protein together with a few percent lipids. In this regard it is chemically quite distinct from the more dominant textile, cotton, which is mainly cellulose. 

Wool is produced by follicles which are small cells located in the skin. These follicles are located in the upper layer of the skin called the epidermis and push down into the second skin layer called the dermis as the wool fibers grow. Follicles can be classed as either primary or secondary follicles. Primary follicles produce three types of fiber: kemp, medullated fibers and true wool fibers. Secondary follicles only produce true wool fibers. Medullated fibers share nearly identical characteristics to hair and are long but lack crimp and elasticity. Kemp fibers are very coarse and shed out. Wool's scaling and crimp make it easier to spin the fleece by helping the individual fibers attach to each other, so they stay together. Because of the crimp, wool fabrics have greater bulk than other textiles, and they hold air, which causes the fabric to retain heat. Wool has a high specific heat coefficient, so it impedes heat transfer in general. This effect has benefited desert peoples, as Bedouins and Tuaregs use wool clothes for insulation.
human
where are follicles located?
gpt
In the skin.
human
what layer?
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The upper layer.
human
do follicles produce wool?
gpt
Yes.
human
does wool impede heat transfer?
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Yes.
human
what desert people use wool?
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Bedouins.
human
who else?
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Tuaregs.
human
what is wool?
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The textile fiber obtained from sheep and other animals
human
what is wool from goats called?
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Mohair.
human
is wool chemically similar to cotton?
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No.
human
what is cotton mainly made of?
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Cellulose.
human
can you get wool from rabbits?
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Yes.
human
what kind?
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Angora.
human
how many types of fiber do primary follicles produce
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Three.
human
what are they?
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Kemp, medullated fibers and true wool fibers.
human
do secondary follicles produce three types as well?
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No.
human
how many do they produce?
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One.
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which type?
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True wool fibers.
human
is wool bulkier than other textiles?
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Yes.
human
is it bad at retaining heat?
gpt
No.
human
what do the fibers hold?
gpt
Air.