1. Mammals
Class Mammalia

2. Characteristics Integumentary
hair, 2 pair of appendages, 5 digits, larynx with vocal cords, have a highly developed immune system to recognize and destroy pathogens

3. Characteristics Skeletal/Muscular
7 cervical vertebrae; Variety of limb adaptions  Can run, walk, climb, burrow, fly, swim, leap

4. Characteristics Circulatory Reproductive
4 chambered heart, 2 separate loops, complete separation of oxygen rich/oxygen poor blood
Reproductive
Dioecious – different sexes, internal fertilization, viviparous – live births, placenta, mammary glands

5. P2 = slate
What are at least two distinguishing features of mammals?

6. Characteristics Nervous Respiratory
Highly developed cerebrum/cerebellum, & senses to detect and respond to stimuli. Endocrine system to regulate body activities by hormones
Respiratory
Diaphragm, lungs with alveoli instead of air sacs, lungs are controlled by two sets of muscles for inhalation and exhalation

7. Characteristics Digestive Excretory
Complex teeth, herbivores (many have specialized digestive organs to break down plant matter), carnivores, omnivores
Excretory
Highly developed kidneys extract urea and help excrete or retain water as needed

8. Characteristics Body Temperature Habitat
Endothermic, may also have sweat glands
Habitat
Land and water

9. P2 = Turn to your partner
Describe how to distinguish between a herbivore and a carnivore by looking at an animals teeth.

10. Groups of Mammals Monotremes – egg laying, have cloaca (platypus)
Marsupials – immature young develop in external pouch (kangaroo, koala)
Placentals – embryo develop longer inside mother (human, dog, elephant)