Rise of Mammals Flashcards Preview

ENVR 202 pt. 2 > Rise of Mammals > Flashcards

Flashcards in Rise of Mammals Deck (11):
1

Mammal

warm blooded, fur/hair, live birth (ish), milk, three middle ear bones

2

Endothermy

ability to control body temperature through internal means (shivering, increasing metabolism)

3

homeothermy

maintaining a stable internal body temperature regardless of external temperatures

4

Tachymetabolism

maintenance of a very high resting metabolism

5

Adaptions that coincide with warm-bloodedness

more efficient metabolism, greater oxygen intake abilities and nutrient uptake, large lungs +diaphragm +improved circulation, more efficient method of removing waste

6

fur/hair

insulation and sensory

7

Monotremes

lay eggs, incubate eggs, only 4 species (platypus etc)

8

marsupials

give birth to underdeveloped live young, continue to develop in protective pouch

9

placental mammals

placenta facilitates exchange of nutrients, gestation entirely within mother

10

Use of mammalian adaptation

possibly nocturnal adaptation to exploit niche

11

Early mammals

small- the ones that survived dinosaur extinction