science chapter 34
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| what are 9 characteristics of a mammal | -Hair
-Teeth
-Limbs
-Lung
-Diaphragm
-Heart
-Warm blooded
-Viviparous
-Mammary glands
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| mammals teeth | in both jaws
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| mammals limbs | 2 pairs of limbs
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| mammals heart | 4 chambered
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| mammals Mammary gland | feed there young
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| 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
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| what are the 5 functions of hair | -Insulation
-Camouflage
-Conspicuous signal
-Sensory
-Defensive
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| keeps us warm | Insulation
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| animals are hiding with there colors | camouflage
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| telling people to stay way from me | conspicuous signal
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| ex) whiskers on a cat | sensory
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| ex) porky pines | defensive
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| insulation | underhair
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| thick cores outer hair which gives color | Guard hair
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| provides nutrient to support the new born growth | mammary glands
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| relatively long period of time receive milk and food protection and shelter | parental care
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| what are 4 types of teeth | -Incisors
-Canines
-Premolars
-Molars
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| front teeth for biting and cutting and they are flat and thin | incisors
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| behind your incisors for stabbing and holding and they are round and pointed | canines
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| grind crush and cut and they are thick and squared | Premolars
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| grind crush and cut and they are thick and squared | molars
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| keep their teeth for life | adult mammals
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| you keep the body temperature high and content by producing large amounts of heat through metabolism | endothermic
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| quite efficient | Respiratory and Circulatory systems
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| 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
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| what are 3 groups of mammals | -Monotremes
-Placental mammals
-Marsupials
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| Oviparous: they layer shelled eggs in which the yolk nourishes the embryo after hatching they feed on the mothers milk Ex: duckbilled platypus | monotremes
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| Viviparous: Placenta: which nutrients to the offspring which the waste goes back to mom Gestation: time between fertilization and birth | Placental mammals
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| 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
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| they layer shelled eggs in which the yolk nourishes the embryo after hatching they feed on the mothers milk | Oviparous
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| which nutrients to the offspring which the waste goes back to mom | placenta
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| time between fertilization and birth | gestation
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| the rumen | stomach
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| what is the process of the rumen | section of the multi rumen stomach bacteria are found here and they produce enzymes which produce cellulose
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| 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
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| cows respiration | Each has a pair of oblong spongy lungs
Diaphragm
Larynx
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| what does a cows diaphragm do | separates the lungs from the abdominal organs
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| what is a cows larynx | as the air passes down the throught it goes through the larynx which is the voice box
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| is much larger than it body | mammalian brain
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| ex: duckbilled platypus | Monotremes
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| ex: pouched mammals | marsupials
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| what order are meat eating mammals in | order Carnivora
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| ex) whales | Aquatic mammals
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| long snout easily trained | dolphin
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| short snout easily trained and among the most intelligent | porpoise
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| what order are gnawing mammals in | Order Rodentia
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| Largest mammalian order | Order Rodentia
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| what would happen if gnawing mammals did not gnaw | there teeth would be so long they could not open there mouth
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| what order are erect mammals in | Order Primates
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| 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
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| largest ape | gorilla
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| proportionate body, most intelligent animal | chimpanzee
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| Toes with enlarged, hardened hooves | hooved mammals
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| what are 2 orders based on hooved types | -Odd-toed hoofed
-even-toed hoofed
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| had 1 long hoofed toe or 3 enlarged hoofed toe ex) horses, donkeys | odd-toes hoofed
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| 2 or 4 functional hoofed toes ex) cow, deer, camels | even-toed hoofed
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| Even-toed hoofed mammels | bovine
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| Includes most beneficial, domesticated animals | bovine
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| Ex) Cows, goats, sheep | bovine
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Created by:
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