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Chapter 11
Chapter 11 Key Terms & Concepts
15
Criminology
12th Grade
06/30/2011

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Term
Anagen Phase
Definition
The initial growth phase during which the hair follicle actively produces hair.
Term
Catagen Phase
Definition
A transition stage between the anagen and telogen phases of hair growth.
Term
Cortex
Definition
The main body of the hair shaft.
Term
Cuticle
Definition
The scal structure covering the exterior of the hair.
Term
Follicular Tag
Definition
A translucent piece of tissue surrounding the hair's shaft near the root that contains the richest source of DNA associated with hair.
Term
Macromolecule
Definition
A molecule with a high molecular mass.
Term
Manufactured Fibers
Definition
Fibers derived from either natural or synthetic polymers
Term
Medulla
Definition
A cellular column running through the center of the hair.
Term
Mitochondrial DNA
Definition
DNA present in small structures (mitochondria) outside the nucleus of a cell. Mitochondria supply energy to the cell. This form of DNA is inherited maternally (from the mother).
Term
Molecule
Definition
Two or more atoms held together by chemical bonds.
Term
Monomer
Definition
The basic unit of structure from which a polymer is constructed.
Term
Natural Fibers
Definition
Fibers derived entirely from animal or plant sources.
Term
Nuclear DNA
Definition
DNA that is present in the nucleus of a cell and is inherited from both parents.
Term
Polymer
Definition
A substance composed of a large number of atoms that are usually arranged in repeating units.
Term
Telogen Phase
Definition
The final growth phase in which hair naturally falls out of the skin.
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