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science chapter 34

what are 9 characteristics of a mammal -Hair -Teeth -Limbs -Lung -Diaphragm -Heart -Warm blooded -Viviparous -Mammary glands
mammals teeth in both jaws
mammals limbs 2 pairs of limbs
mammals heart 4 chambered
mammals Mammary gland feed there young
filament made of dead cells filled with the protein carrion each hair is anchored in and produced by a bulb shaped structure which is the follicle which lies beneath the surface of the skin hair
what are the 5 functions of hair -Insulation -Camouflage -Conspicuous signal -Sensory -Defensive
keeps us warm Insulation
animals are hiding with there colors camouflage
telling people to stay way from me conspicuous signal
ex) whiskers on a cat sensory
ex) porky pines defensive
insulation underhair
thick cores outer hair which gives color Guard hair
provides nutrient to support the new born growth mammary glands
relatively long period of time receive milk and food protection and shelter parental care
what are 4 types of teeth -Incisors -Canines -Premolars -Molars
front teeth for biting and cutting and they are flat and thin incisors
behind your incisors for stabbing and holding and they are round and pointed canines
grind crush and cut and they are thick and squared Premolars
grind crush and cut and they are thick and squared molars
keep their teeth for life adult mammals
you keep the body temperature high and content by producing large amounts of heat through metabolism endothermic
quite efficient Respiratory and Circulatory systems
sheet of muscle at the bottom of the rib cage and the contraction of the diaphragm helps draw air into the longs for a more efficient respiration Diaphragm
what are 3 groups of mammals -Monotremes -Placental mammals -Marsupials
Oviparous: they layer shelled eggs in which the yolk nourishes the embryo after hatching they feed on the mothers milk Ex: duckbilled platypus monotremes
Viviparous: Placenta: which nutrients to the offspring which the waste goes back to mom Gestation: time between fertilization and birth Placental mammals
Viviparous Very short gestation the new born are incompletely developed they craw into the pouch attaches to a nipple and then continues its growth Ex: opossums, kangaroo, koala Marsupials
they layer shelled eggs in which the yolk nourishes the embryo after hatching they feed on the mothers milk Oviparous
which nutrients to the offspring which the waste goes back to mom placenta
time between fertilization and birth gestation
the rumen stomach
what is the process of the rumen section of the multi rumen stomach bacteria are found here and they produce enzymes which produce cellulose
what is cud They thronging up cud which is parochially digestive food and chew it a 2 time swallow it again so enzymes get mixed in a 2 time call chewing its cud
cows respiration Each has a pair of oblong spongy lungs Diaphragm Larynx
what does a cows diaphragm do separates the lungs from the abdominal organs
what is a cows larynx as the air passes down the throught it goes through the larynx which is the voice box
is much larger than it body mammalian brain
ex: duckbilled platypus Monotremes
ex: pouched mammals marsupials
what order are meat eating mammals in order Carnivora
ex) whales Aquatic mammals
long snout easily trained dolphin
short snout easily trained and among the most intelligent porpoise
what order are gnawing mammals in Order Rodentia
Largest mammalian order Order Rodentia
what would happen if gnawing mammals did not gnaw there teeth would be so long they could not open there mouth
what order are erect mammals in Order Primates
what are 8 characteristics of erect mammals -Freely moving arms and legs -Opposable thumbs and large toes -Finger and toe nails -Forward facing eyes -Poor sense of smell -Time in trees -Less specialized teeth -Mostly vegetarian
largest ape gorilla
proportionate body, most intelligent animal chimpanzee
Toes with enlarged, hardened hooves hooved mammals
what are 2 orders based on hooved types -Odd-toed hoofed -even-toed hoofed
had 1 long hoofed toe or 3 enlarged hoofed toe ex) horses, donkeys odd-toes hoofed
2 or 4 functional hoofed toes ex) cow, deer, camels even-toed hoofed
Even-toed hoofed mammels bovine
Includes most beneficial, domesticated animals bovine
Ex) Cows, goats, sheep bovine
Created by: Lauren Bowers