Transcript Class Mammalia Those hairy buggers!

Class Mammalia
Those hairy buggers!
“The Mammals”
General
Characteristics
 Endothermic
 Most have sweat glands
 Body covered with hair
 Nourishes young with milk
 Mammary glands
Characteristics
Continued
 Four chambered heart
 To be discussed later
 Specialized teeth
 Highest developed brains
Body Systems
 Circulatory & Respiratory System
 Four-chambered heart
 Double loop system for blood
 Breathe with lungs
 Diaphragm helps move air
Circulatory & Respiratory
Mammal Teeth
 Type, number, and arrangement
indicate animal’s diet
 Canines- sharp and pointed
 Incisors- in front for biting
 Molars- flattened for grinding
Picture of Teeth
Tomorrow
The three orders of mammals
and their characteristics
Picture Credits
 Circulatory System
[http://www.teachnet.ie/farmnet/images/Circul2.gif]
 Tooth Types
[http://biology.dbs.umt.edu/dbs/mammal.htg/mammal.htg/Teeth.jpg]