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science chapter 34
| Question | Answer |
|---|---|
| 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
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