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20 terms

Mammalian Features

STUDY
PLAY
Hair
turns into keratin
Vibrissae
whiskers
Horn (not true)
hair-like filaments cemented together
True Horn
Bone core surrounded by hair filaments
Antler
Solid bone
Milk
Nourish young
Ear bones
malleus, incus, stapes. Derived from jaw
Endothermic
Maintain body temp. different from environment
Types of Glands
Eccrine, Apocrine, Sebaceous, Mammary Glands.
Eccrine Gland
Evaporative Cooling
Apocrine Gland
Scent producing. Many functions.
Sebaceous Gland
Sebum. pliable, glossy hair
Mammary Glands
nourishment (water, carbs, fat, protein, minerals, antibodies).
Plantigrade
Whole foot
Digitigrade
Digits
Ungulatigrade
Tips of toes
Difference between Placental and Marsupial Mammals
Development of Young, Epipubic bones, egnostrated palate, marsupial shelf.
homeodont teeth
No diversity.
Heterodont
Diversity in tooth form and function
Diastema
Gap between incisors and premolars. Herbivore.