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14 Cards in this Set
- Front
- Back
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What is the name of the group(s) that have zero, one or two temporal holes? |
Zero - anapsida One - synapsida, eurapsida Two - diapsida |
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Describe each of these early synapsids: pelycosaurs, therapsids, cynoghanthus and tritylodon. |
Pelycosaurs: fin may have regulated temp Therapsids - cynoghanthus: see teeth beginning to differentiate into canines and incisors, potentially hair Tritylodon: shift towards evolution in inner ear bones where jaw becomes malleus and quadrate (skull) becomes incus |
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What are tribosphenic teeth? |
Grind/cut, for increased metabolism of mammals |
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What are dilamdodont? |
W shaped molars found in terrestrial insectivores, and some aerial insectivores ex. microchiropterans |
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Sanguinivorous - define. |
Blood eater, ex. vampire bat |
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What are lophodont, selenodont teeth? |
1) Ridges teeth, perpendicular to toothrow ex. perrisodactyls, rodents 2) ridged teeth, parallel to toothrow ex. articodactyls |
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What are the compartments of a multichambered stomach? |
Rumen, reticulum, omasum, abomasum |
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Types of hair. |
Angora: every growing ex. horse Definitive: grows then stops ex. cats Vibrassae: whiskers, highly innervated |
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Function of hairs |
Guard/body: can be A) spines for protection ex. hedgehog b) bristle (ex. lion mane) C) awn, which can be fur *most common, wool or velli (down) Camouflage: A) countershading (blend colors) B) cryptic (blend in) ex. deer fawn) C) disruptive (adaptive defense) ex. zebra |
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Types of glands |
Sweat: ecccrine (lead to skin) and apocrine (associated with hair follicle) -modified into teats Sebaceous |
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What is unguis, subunguis, |
nail, under nail |
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Types of reproductive tracts/ |
Duplex: 2 uteri, enters to vagina ex. legomorphs Bipartite: 2 uteri, enter small chamber before vagina ex. whales, carnivores Bicorunate: central uterus, two uterine horns, cervix, vagina ex. bats, primates, elephants Simple: fallopian tubes, oviducts, vagina, cervix |
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Types of chorioallantoic placentals |
Diffuse - spotty (ex. Discoid - highly interdigitated (ex. humans) Cotyledonary - bean shaped interdigitations ex. artidacts) zonary - bank around fetus ex. carnivores |
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Nondeciduous and deciduous. What is it and what types are each? |
Deciduous - leaves a scar, zonary, discoidal Non - no scar, diffuse and cotyledonary |
