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Anthro 1AA3- Final exam Review.docx

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Department
Anthropology
Course
ANTHROP 1AA3
Professor
Tracy Prowse
Semester
Winter

Description
Anthropology 1AA3-Winter Final Exam Review Material Required: - Film – „Codes of Gender‟ - Early humans (pp.223-247) - Trends in globalization/development (pp.270-282) - Sex and Gender (pp.40-52) - Gender in the archaeological record (pp.47-81) - Cultural aspects of food (meanings, food taboos) (pp. 97-110, but NOT 102-107) - Subsistence (pp.110-130) - Agriculture and animal domestication (pp.131-150) What is Bioarchaeology? (Text pp. 197 – 210) - The study of the human skeleton in an archaeological context. - It deals with the excavation and analysis of human skeletal remains. o Health o Diet o Habitual Activities o Mobility • Look for patterns within and between populations How do we look at health? - Paleopathology – study of health and disease in past populations - Only those conditions that leave traces on the skeleton - How diseases have evolved overtime, and how diseases processes affect bone growth and development. - Patterns of illness and disease – relate to cultural aspects o Sex o Age o Status o Time o Health – nutritional deficiencies (conditions that individuals have lived with for a period of time) o Rockets-bending and fractures of bones caused by lack of vitamin D o Common in the industrial period, particular in the UK. o Associated with increased activity in factories, children were not getting sufficient amounts of Vitamin D. o Bones are not able to mineralize properly therefore, they become weak. The pressure of walking causes bones to bend. How do we look at diet? - Most common way is to look at the teeth because teeth are usually involved in the first stages of food processing by the body - It follows that they my provide clues to the types of food eaten and the ways in which those foods were prepared for consumption.  They can show infections or heavy tooth wear.  E.g. heavy tooth wear: Tough and fibrous foods, such as uncooked meats and vegetables  Tooth wear is also caused due to poor cleaning or the mechanics food storage or processing.  Severe tooth wear suffered by hunter foraging is due to the consumption of raw or lightly cooked meats, tubers and fruits.  Food doesn‟t cause cavity, but the bacteria that produces acid.  E.g. increase in dental caries overtime is due to the increase consumption sugary beverages and food.  More cavities with settled agriculturists, and more tooth wear with hunter-foragers. How do we look at work? - E.g., activity markers such as Auditory exostoses (ear and the production of some sort of bone) o Often an obstruction in the opening of the ear in which people are often submerged in cold water (surfers for example)  High prevalence of this in Roman populations o Male Romans would take baths (3 temperatures) and end by immersing themselves in cold water. - Squatting facets (ankle region)  5 B.C. Italian Skeleton (young adult female) o Many changes in her skeleton that were characteristic o Arthritic hip, activity on her elbow region changes on her hand bones, knees, and her big toe o Repeated stressors on the parts of the bone could suggest constant habitual squatting due to grinding grain. Trauma: o Try to understand what caused trauma o E.g. Cervical vertebra (neck region)  A cut mark was found on the o E.g. Blunt trauma to a skull (can be associated with not only violence, but regular accidental injuries) o Intentional cultural modifications (may occur before or after death)  Foot binding  Dental modifications for example: Mayan skull with dental inlays of gems (often a display of wealth and status)  Trephination (the surgical removal of a portion of the cranial vault in order to cure headaches, epilepsy or mental illness or magical or spiritual reasons.)  Most examples come from Peru; most of the examples show evidence of healing.  Developed in Medieval times however, still exists today  One of the earliest known medical practices What are Fossils? o Organic material (e.g., bone), is replaced by minerals from surrounding soil. What does a hominid look like? - These different primate species present a range of distinctive features in their teeth, jaws, and brains that represent adaptations to varying environments. - Small front teeth & large molars, reduction of face, jaw, and anterior teeth. - Bipedalism (key characteristic) & associated anatomical adaptations are the characteristics that separate them from other primates and identify them as a distinct family. - They are the closest fossil relatives of modern humans. - Increased manual dexterity Major Features of Bipedalism-it is reflected in skeletal structure 1 - Position of foramen magnum (the opening in the base of the skull through which the spinal cord passes) - In quadrupeds foramen magnum is located at the back of the skull - In bipedal animals foramen magnum is located on the bottom of the skull. 2. Hominid spine has two distinctive curves (S-shaped) 3. Shape and structure of the pelvis– broad and low 4. Shape and structure of the foot/ knee (arch) 5. Longer lower limbs Earliest evidence for bipedalism: The appearance of bipedalism in hominids is evident in the fossil record from sometime between 6 million and 10 million years ago. Ardipithecus ramidus (5.8-5.2 mya): a primitive hominin, known from fossils from Ethiopia. How can we tell if early hominids were bipedal? - Foramen magnum - Shape of vertebral column - Shape/structure of pelvis and lower limb (leg and foot) - Longer lower limbs Why Did Bipedalism Develop? 1. Tool-use: one of the earliest theories suggested it evolved because it freed the hands to make tools. - Early hominids lack sharp teeth, the ability to use tools would have given them access to greater variety of food sources, and thus ensuring increased survival and ultimate reproductive success. - NO – earliest tools date to 2.5 million years ago where as the origin of bipedalism can be traced back at least 6 -10 million years ago. 2. Efficient scavenging: Infants of early hominids were able to cling to the mothers, bipedalism would have allowed infants to be carried, but it would cause the inability move quickly through trees to elude predators. 3. Long distance travel: Crucial advantage may have been the ability to transport food back to a mate by walking upright and using simple implements, such as broad leaves, to maximize the amount if food that could be carried. 4. Predator avoidance: Bipedalism would’ve allowed for infants to be carried - Not beneficial as they would need to elude predators. 5. Sexual division of labor (man the hunter): Provisioning by the male would have allowed the female to devoted more time to infant care. 6. Provisioning – food sharing and carrying: - Food sharing may have produced a reproductive strategy that favored close long- term relations between male and female and more time devotion to infant care. - But there is no evidence of long-term relationships in that time. 7. Enhanced heat loss (re: solar radiation): Less heat is generated in the legs of bipedal and was better for hunting standing leads to less surface area being exposed to the sun. What is an Australopithecine? - Dated from 4.2 m.y.a. to ~ 1.8 mya - Many different species recognized - Found exclusively in Africa Features of Australopithecines - Clearly bipedal - Relatively small brains (i.e., compared to Homo) - All have large teeth (esp. molars), with thick to very thick enamel on the molars *Not all happening at the same rate – mosaic evolution Trends in Hominid Evolution: - ↑ brain size
 - ↓ size of face, teeth, and jaws - Tool use - Problem – not all occurred at the same time (mosaic evolution) Mosaic Evolution: A pattern of evolution in which the rate of evolution in one functional system varies from that in other systems Gracile vs. Robust o Australopithecus afarensis and A. africanus are known as gracile australopithecines, because of their relatively lighter build, especially in the face and teeth o Gracile means slender, and in paleontology is used as an antonym to robust o Despite this, A. afarensis and A. africanus were still more dentally robust than modern human o Australopithecus aethiopicus, A. robustus and A. boisei are known as robust australopithecine
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