Mammals Flashcards
Mammary glands
in a female mammal, a gland that secretes milk
diaphragm
a dome shaped muscle that is attached to the lower ribs and that functions as the main muscle in respiration
endothermic
(of a reaction or process) accompanied by or requiring the absorption of heat.
2.
hair
any of the fine threadlike strands growing from the skin of humans, mammals, and some other animals
incisors
a narrow-edged tooth at the front of the mouth, adapted for cutting. In humans there are four incisors in each jaw.
canines
a pointed tooth between the incisors and premolars of a mammal, often greatly enlarged in carnivores.
molars
a grinding tooth at the back of a mammal’s mouth.
placenta
a flattened circular organ in the uterus of pregnant eutherian mammals, nourishing and maintaining the fetus through the umbilical cord.
gestation period
in mammlas the length of time between fertilization and birth
anteaters
unique backbones , called toothless mammals, eat insects
insectivores
eat insects, small with long pointed noses that help them smell their food, simple teeth and small brains.
rodents
live on every continent besides antartica, sensitive wiskers, one set of incisors in the upper jaw, they wear down but grow back.
rabbits
sharp gnawing teeth, two sets of incisors, tails are shorter than rodents.
flying mammals
Bats are only ones that fly, eat insects or other small animals or fruits some drink blood, use echolocation.
carnivores
Large canine teeth and special molar for slicing meat, some eat plants.
Trunk nosed mammals
Elephants are the only trunked animals, the trunk is a combo of the upper lip and a nose, uses trunk same way we use our hands.
hoofed mammals
Hoof is similar to a toenail or claw, large flat molars that help them grind the plants they eat, two orders odd toed and even toed.
cetaceans
all live in water, unlike fish have lungs and nurse younge, most largest whales are toothless, others have teeth.
manatees and dugongs
smallest group that lives in water, eat mostly seaweed and water plants, lift noses from water to breath air.
primates
Five fingers and five toes, larger brains, opposable thumbs many live in trees, eat leaves and fruits some hunt animals.
monotremes
Lays eggs, have hair and mammary glands.
marsupials
has a carries and nourishes its young in a pouch, give birth to live young.