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Intro to Mammals, 32-1

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Katelynn Dorn

on 1 May 2014

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Transcript of Intro to Mammals, 32-1

Intro to Mammals, 32-1
Respiration, Circulation, & Excretion
lungs, chest muscles lift rib cage up and outward, diaphragm pulls downward
excrete nitrogenous wastes in the form of urea
filter urea from blood, excrete or retain water when needed
retain salts and sugars
Response, Hormones, and Immunity
dogs, bats, and dolphins can detect sounds at high frequencies
elephants & humans detect lower frequencies
bats & dolphins- echolocation
diurnal and nocturnal animals
eyes have rods and cones (photoreceptors)
endocrine glands release hormones
immune system includes skin, special cells, and chemicals to destroy pathogens
Movement & Reproduction
flexing backbone
different limbs depending on lifestyle
internal fertilization
mother's milk and maternal care
Body Temperature Control and Feeding
smaller mammals have a higher rate of metabolism
subcutaneous fat,
sweat glands, panting
-process by which organisms can maintain a stable environment in their bodies
because of metabolic rate, mammals eat ten times as much as reptiles
herbivores have longer digestive system
- stores plant material, bacteria digest it
What makes a mammal a mammal?
5 reasons!
Evolutionists believe mammals evolved from reptiles during the Carboniferous period?
What would a Christian say?
Full transcript