ANTH143_2

ANTH143_2 - ANTH 143 Lecture Notes 2/13/08 I. Limits to...

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Unformatted text preview: ANTH 143 Lecture Notes 2/13/08 I. Limits to Growth Hayflick Limit o Disproved idea of potential endless cell replication upper limit for cell division Hayflick limit o loss of replicative capacity Programmed Senescence o Some master gene/genes switched on to lead to senescence o Selection acts directly on senescence Redundancy, wear + tear o Intrinsic fall backs Sub-units provide reserve capacity Once reserve capacity exhausted, stressers have a larger impact Particularly affect ability to maintain homeostasis o Either lose reserve capacity or lose intrinsic viability in redundant units II. Bone Growth 2 ways of ossification bone remodeling through growth in adulthood o Types of bone : Woven/Primary Bone Disorganized/rapid growth (as opposed to geometrically organized) Primary bones Lamellar/secondary Bone...
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This note was uploaded on 05/06/2008 for the course ANTH 143 taught by Professor Bernstein during the Spring '08 term at GWU.

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ANTH143_2 - ANTH 143 Lecture Notes 2/13/08 I. Limits to...

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