Can you name the Mammology?

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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
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?
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
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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