Ch. 30 L. 1 Mammalian Characteristics

They provide milk to nourish newly born mammal young.

They provide milk to nourish the developing mammal fetus.

They secrete fluids to stimulate milk production in mammal mothers.

They secrete fluids to stimulate the desire for milk in young mammals.

developed brain and mammary glands

mammary glands and hair

similar teeth and metabolism

specialized teeth and digestive system

insulation – camouflage – sensory devices

insulation – defense– signaling

defense – camouflage – signaling

insulation - signaling - sensory devices

sensory device

movement

waterproofing

insulation

incisors

canines

molars

pre-molars

incisors

canines

molars

pre-molars

when body temperature increases

when body temperature decreases

when there is too little oxygen in the blood

when blood vessels contract

canines, incisors, grinding molars, cutting molars

canines, incisors, molars, premolars

fangs, canines, molars, premolars

fangs, incisors, grinding molars, cutting molars

More active mammals such as rabbits require a longer digestive system.

Plant materials eaten by herbivores take longer to digest than insects.

Rabbits have a higher metabolic rate, requiring more energy from foods.

The omnivorous diet of a hedgehog is easier to digest than plants.

defense behaviors of specific mammal species

habitats occupied by different mammal groups

possible diets of different groups of mammals

similarities between mammals and other vertebrates

first and second chamber of a four-chambered stomach.

first chamber of a three-chambered stomach.

third and fourth chamber of a four-chambered stomach.

third chamber of a three-chambered stomach.

carnivore

herbivore

insectivore

omnivore

omnivores

insectivores

carnivores

herbivores

Chest cavity enlarges, Air flows into the lungs.

Chest cavity become smaller, Air flows into the lungs.

Chest cavity enlarges, Air flows out of the lungs.

Chest cavity become smaller, Air flows out of the lungs.

exhalation caused by the diaphragm

inhalation caused by the diaphragm

intake of carbon dioxide

removing of carbon dioxide

A

B

C

D

mother fox teaching young survival skills

squirrels' balance and coordination

mother tiger teaching young to hunt

mice remembering layout of habitat

temporal lobe

parietal lobe

occipital lobe

frontal lobe

sweat glands

sebacious glands

mammary glands

scent glands

uterus

placenta

diaphragm

mammary glands

gestation

placenta

diaphragm

uterus