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Unformatted text preview: APoten(alEssayQues(onforYour FirstExam:
Whyisbipedalismsoimportantinthe evolu(onaryhistoryofourspecies?Describe theanatomicalchangesassociatedwiththe evolu(onofbipedalisminhominids.Discuss thecorrela(onbetweentheprogressive increaseinbrainsizeandculturalcomplexity aEertheadventofbipedalismforthehominid taxadiscussedinlecture.Besuretoincludeat leastageneralchronologyforthehominid taxayoudiscuss. SyllabusCorrec(on -Labor Day is Monday Sept. 7 (No Class) -We will have class on Monday August 31 Whatisculture?AssignmentDueFriSept.1 Inthisassignmentyouaretoprovideadefini(on ofculture,andthenapplythatdefini(ontoa culturalphenomenonthatyouarefamiliarwith. Notelinktodefsofcultureonpage11ofsyllabus andevalua(oncriteriahandout. Humankind'sextrasoma(cmeansofadapta(on, thevalues,beliefsandidealsofasociety,learned behavior. TheGameofTheCentury! ThanksgivingDay1971 Remember--TheStudyGuideisyourBestFriend inGenEd110! Lets take a look at a study guide from last semester! TheDawnofHumanity ClassMammalia OrderPrimate
Primate Order Suborder
Catyrrhinni Cercopithecoidea Prosimii Lemur Loris Tarsier Anthropoidea Platyrhinni Ceboidea Infraorder Superfamily
Hominidae Pan Homo Hominoidea Great Apes Pongidae Gorilla Family Genus Hylobatidae Pongo Hominids-Modern Humans and their fossil ancestors Primate Phylogeny Hominidae/Hominids/Homininca.6mya: includesallhumansandourex(nct ancestorsaEersplitwithcommon ancestorsofchimps. The fundamental shift was bipedalism, before large brains. Sahelanthropustchadensis Ageca.6.5mya Chad,Africa Cranialcapacityof340cc Posi(onofforamenmagnum suggestbipedalism? Possiblehumanapeancestor No tools Age6mya Kenya Angleoffemurhead suggestsbipedalism mayormaynotbe hominid Notools Orrorintugenensis ("MilleniumMan") SkeletalChangesAssociated withBipedalism
Skull on top of the spinal column and foramen magnum under skull to balance head on spine. "S" shaped curve in spine center of gravity to be over hips and absorb shock. Bowl-shaped Pelvis ilium (hip bones) short and broad supports internal organs femur attachment forward larger patella allows us to lock our knees and easily stand upright
- "Knock-kneed" legs angle inward from hip to knee centers gravity Large heel strike with heels large to take weight Arches absorbs stresses from walking, and allows transfer of weight from back of foot to front Big toe in line can use it to push off as we step Arms short compared to the legs Not weight bearing Theories on the Evolution of Bipedalism adaptive advantage on savannah efficiently move between scattered forests and grasslands Freeing hands carrying food to different places, use of tools and weapons see prey and predators above the grass Theories on the Evolution of Bipedalism More efficient regulating body temperature top of the head is exposed =less surface area Radiator circulatory system: cool brain Canyouthinkof anydisadvantages tobipedalism? Apoten(alEssayQues(onforyour FirstExam:
Whyisbipedalismsoimportantinthe evolu(onaryhistoryofourspecies?Describe theanatomicalchangesassociatedwiththe evolu(onofbipedalisminhominids.Discuss thecorrela(onbetweentheprogressive increaseinbrainsizeandculturalcomplexity aEertheadventofbipedalismforthehominid taxadiscussedinlecture.Besuretoincludeat leastageneralchronologyforthehominid taxayoudiscuss. ...
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This note was uploaded on 09/14/2009 for the course GENED 110 taught by Professor Chan during the Spring '06 term at Washington State University .
- Spring '06