Question | |
Central living portion of the tooth, in communication with the blood system. Lifeline of growing teeth. | |
Bony material, replaces the enamel at root. | |
Raising legs on same side while support on opposite side. | |
Peg-like teeth with no enamel coverings (Edentata) | |
group of similar organisms limited geographically and do not breed among unlike groups | |
ways it is possible for 82 to live without water | |
A period of summer inactivity | |
Beaver submerged | |
leap forward by hind feet & land on forefeet, hindfeet brought near forefeet (horse, cheetah, rabbits, hares) | |
What percentage of air do whales renew? Humans? | |
Teeth are modfied to specialize a function. | |
Cuspids fused into tranverse ridges intervening shallow valleys | |
2 types of tubercular | |
4 types of teeth | |
Raises diagonal, opposite paired feet moved forward & support by other pair. Ungulates (hooved) have true | |
Whats is an Embryonic feature unique to chordates. Later modified into brain and spinal cord. | |
Jumping, front legs very shortened, hind legs & tail elongated,( kangaroos, wallabees, jumping mouse) | |
Carry great weight-5 digits in circle around foot, weight bore by digits & pads. | |
White, hard, covers the exposed part of the tooth. Hardest part in the mammal body. | |
whales submerged | |
Flexible rod-shaped in embryos of chordates. Some have throughout life, most it is replaced by vertebral column. | |
1st modified from plantigrade, hooves, short fore limbs, tibia/fibula, radius/ulna fused, | |
means of walking fast | |
Upper from maxilla bone. For holding, piercing, puncturing, Crown shape, single cusp, On each side above & below | |
Thin membrane surrounding the embryos of mammals, birds, & reptiles. | |
in wild can live without drinking free water | |
Attached to ribs, how many? | |
adaptations for high evolutions (4) | |
Crescent shaped ridge or ridges. Several rows, wear down & become flat. | |
Wisdom teeth in humans, No milk teeth predecesors, functional for most mammals. | |
Tricuspid primitive crown, early placental mammals like the horse, few mammals today (shrews) | |
2 types of bunodont | |
| Question | |
For nipping, grow from upper premaxillary bones & lower dentary, unspecialized compared to other teeth. | |
manatees submerged | |
Fetal membrane involved in nutrition and excretion. Collects liquid waste from the embryo. SPECIALIZED TO MAMMALS! | |
6 different internal characteristics to mammals | |
seals submerged | |
Crushing, omnivorous animals. Humans, bears, pig. | |
A group of closely related species | |
4 Osteological features | |
species that want to lose heat to keep cool | |
Ear Ossicles | |
Walking-primitive mammals; plantigrade, 5 digits, (humans, racoons, bears) | |
For shearing, cutting, grinding, slicing, usually multi-cusp, evolved for advanced plant eaters. | |
geographic varieties or races in a species | |
transmits the sound vibrations from the incus to the membrane of the inner ear. **These are also found in all 4-Legged vertebrates. | |
walking on hind legs, Only humans, but other primates can for short periods. | |
4 types of land locomotion | |
offspring between subspecies | |
Transmits sounds from malleus to stapes, evolved from quadrate | |
Tranmits sounds from ear drum to incus, evolved from articular bone | |
Offspring between two different species | |
3 Post cranial skeletal elements | |
Spine down to back legs, how many? | |
Bones of tail, no spinal column | |
Fused tail bone found in humans and chimps | |
What is hair? | |
Homosapiens submerged | |
Function of hair? | |
For shearing/cutting (Felidae) | |
Part beneath the skin in the dermis. Has stem cells for regrowth. | |
Hard filamentous part that extends above skin surface? | |
5 types of speed variations | |
Outermost part of hair shaft, thin, no pigment, scale like appearance? | |
| Question | |
Specialized fliter feeding organ in non-vertebrate chordates living in aquatic environments. | |
Makes up most of hair; can contain pigments. | |
Made of shrunken cells, a lot of variation. Can be chambered air spaces which makes warmest type of fur for cold regions. I.e. Polar Bear. | |
Small muscles attached to hair; when contracted hair stands on end. | |
Glands attached to the hair to lubricate hair and keep from getting brittle. | |
Extension of dermis into epidermis. Nourishes hair follicle for hair growth. | |
Examples of smallest mammals? | |
Largest Terrestrial mammal? | |
Largest living mammal? | |
skin and/or hair depending on amount and distribution while hair is still in follicle. | |
Surrounds and protects inner ear. Rose from the angular bone from reptilian species. | |
2 types of pigment | |
Color variations | |
Total amount of hair/ fur that covers an animal at one given time. | |
Types of pelage | |
3 Specialized features of Chordata | |
specified folicles containing tissues that make them very stiff. Most are sensory whiskers. Tactile hairs (sinus) | |
Folicles w/ no eretilce tissue. In general hairs are defensive, insulated, good nerve supply | |
2 types of body hair | |
Stiffened hairs, over hair, top hair, cover hair, outermost hair, Longest. | |
3 types of guard hair | |
Usually pigmented, scattered over body | |
Firm at tip but weak at base so come off easily | |
Underneath guard hair, uniformly soft. | |
3 types of underhair | |
At birth young are helpless, blind, naked. | |
Opened eyes at birth, covered in fur | |
Symbolism | |
3 unique mammalian characteristics | |
4 substances of the teeth | |
Makes up most of the bulk of the tooth. | |
Neck region of vertebrae, how many in humans? | |
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