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science chapter 34

QuestionAnswer
What are the 9 characteristics of a mammal •Hair •Teeth in both jaws •two pairs of Limbs •Lung •Diaphragm •4 chamber Heart •Warm blooded •Viviparous •Mammary glands
filament composed mainly of dead cells filled with the protein keratin, each hair is anchored in and produced by a bulb shaped structure which is the hair follicle which lies beneath the surface of the skin hair
protein that fills the hair Keratin
bulb shaped structure just beneath the skin that the hair grows out of Hair follicle
What are the 5 functions of a hair •Insulation •Camouflage •Conspicuous signal •Sensory •Defensive
keeps us warm Insulation
hiding from predators, or to help catch prey Camouflage
warning away very obvious Conspicuous signal
ex) the whiskers on a cat Sensory
the quills on a porcupine Defensive
What are the 2 types of hair •Underhair •Guard hair
insulates them Underhair
thick course outer hair which gives color Guards hair
Created by: Lauren Bowers
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