2. Chapter 30 Mammals Section 1: Mammalian Characteristics
Section 2: Diversity of Mammals

3. Hair and Mammary Glands
Chapter 30
Mammals
30.1 Mammalian Characteristics
Hair and Mammary Glands
Two characteristics that distinguish members of class Mammalia from other vertebrate animals are hair and mammary glands.

4. Functions of Hair Insulation Camouflage Sensory devices Waterproofing
Chapter 30
Mammals
30.1 Mammalian Characteristics
Functions of Hair
Insulation
Camouflage
Sensory devices
Waterproofing
Signaling
Defense

5. Other Characteristics
Chapter 30
Mammals
30.1 Mammalian Characteristics
Other Characteristics
Endothermy
Source of body heat is internal.
Heat is produced by a high metabolic rate.
Body temperature is regulated by internal feedback mechanisms.

6. Chapter 30
Mammals
30.1 Mammalian Characteristics
Feeding and Digestion
Daily intake of food is used to generate heat to maintain a constant body temperature.

7. 30.1 Mammalian Characteristics
Chapter 30
Mammals
30.1 Mammalian Characteristics

8. Trophic Categories Insectivores Herbivores Carnivores Omnivores
Chapter 30
Mammals
30.1 Mammalian Characteristics
Trophic Categories
Insectivores
Herbivores
Carnivores
Omnivores

9. Reveal the life habits of a mammal
Chapter 30
Mammals
30.1 Mammalian Characteristics
Teeth
Reveal the life habits of a mammal
Carnivores use canines to stab and premolars to slice and shear meat.
Incisors of insectivores are long and curved, functioning as pincers in seizing insect prey.

10. Kidneys excrete or retain the proper amount of water in body fluids.
Chapter 30
Mammals
30.1 Mammalian Characteristics
Excretion
Kidneys excrete or retain the proper amount of water in body fluids.
Enables mammals to live in extreme environments
Mammals

11. Mammals are the only animals that have a diaphragm.
Chapter 30
Mammals
30.1 Mammalian Characteristics
Respiration
High levels of oxygen are required to maintain a high level of metabolism.
Mammals are the only animals that have a diaphragm.

12. 30.1 Mammalian Characteristics
Chapter 30
Mammals
30.1 Mammalian Characteristics
Circulation
Mammals require a consistent supply of nutrients and oxygen to maintain homeostasis.
Keeping oxygenated and deoxygenated blood separate makes the delivery of nutrients and oxygen more efficient.

13. 30.1 Mammalian Characteristics
Chapter 30
Mammals
30.1 Mammalian Characteristics
The Brain and Senses
Mammals have highly developed brains.
Cerebral cortex is responsible for coordinating conscious activities, memory, and the ability to learn.
Cerebellum is responsible for balance and coordinating movement.

14. Complex Behavior Senses
Chapter 30
Mammals
30.1 Mammalian Characteristics
Complex Behavior
Senses
The importance of the senses varies from one group of mammals to the next.
Glands
A system of glands secretes a variety of fluids that helps to regulate a mammal’s internal environment.

15. In mammals, the egg is fertilized internally.
Chapter 30
Mammals
30.1 Mammalian Characteristics
Reproduction
In mammals, the egg is fertilized internally.
Development of the embryo takes place in the female uterus.
Movement
Mammals must find food, shelter, and escape from predators.

16. Mammal Classification
Chapter 30
Mammals
30.2 Diversity of Mammals
Mammal Classification
Monotremes
Marsupials
Placental mammals

17. Reproduce by laying eggs
Chapter 30
Mammals
30.2 Diversity of Mammals
Monotremes
Reproduce by laying eggs
Duck-billed platypus

18. Echidna

19. Very short period of development in the uterus
Chapter 30
Mammals
30.2 Diversity of Mammals
Marsupials
Very short period of development in the uterus
Crawl into a pouch made of skin and hair and continue development while being nourished by milk from the mother’s mammary glands
Marsupials
Kangaroo

22. Chapter 30
Mammals
30.2 Diversity of Mammals
Placental Mammals
Give birth to young that do not need further development within a pouch
Humpback whale

30. Oh My!!

31. Chapter 30
Mammals
30.2 Diversity of Mammals