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Mammals PT
vocabulary
| Question | Answer |
|---|---|
| endothermy | in animals,the characteristic of maintaining a high, constant body temperature through regualtion of metabolism and heat loss |
| mammary gland | gland that is located in the chest of a female mammal and that secretes milk |
| synapsid | a line age of aminoted that gave rise to mammals characterized by skulls that have a single opening in a bone behind the eye socket |
| therapsid | a lineage of synapids that were abundant during the late permian period and gave rise to mammals; characterized by limbs positioned directly beneath the body some may have been endothermic |
| monotreme | a mammal that lays eggs |
| oviparous | describes organisms that produce eggs that develop and hatch outside the body of the mother |
| marsupial | mammal that lacks a true plancenta and gives birht to relatively endeveloped young and then carries and nourishes the young in a pouch |
| viviparous | ann organism whose offspring develop within the mothers body and are born alive |
| placental mammal | a mammal that nourishes its unborn offspring through a placenta inside its uterus |
| placenta | the sructure that attaches a developing fetus to the uterus and that enables the exchange of nutrients,waste,and gases between the mother and the fetus |
| pinniped | an aquantic, fin footed, carnivores animal, such as sea lion or walrus |
| prehensile appendage | an appendage that can gasp objects as in a primates hand,foots,or tail |
| anthropoid primate | one of a subgroup of primates that include monkeys, apes, and human |
| opossite thumbs | primates, a thumb that can touch and move in opposition to the other fingers of the hand |
| great ape | an ape whose face has little hair and whose hands have nails and complex fingerprints, such as in orangutum, gorilla, or chimpanzee |
| bipedalism | in hominids, the condition of being adapted to walk primarly upright on two legs |
| hominid | a member of the family hominade of the order primate, characterized by bipedalism, relatively long lower limbs and lack of a tail, examples include humans and thier ancestors |
| australopithecine | one of a subfamily of early hominids that lived in between 4.2 million and 1 million years ago, includes the genus australopitheus and possibly the genus parathropes |
| human | a member of the genus homo of the family homindae; includes modern humans and closely related extinct species |
| ungulate | a hoofed mammal |
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