BIOLOGY 3XL3 Study Guide - Midterm Guide: Urethral Sphincters, Skeletal Muscle, Troponin
8 Nov 2016
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4. physiological functions obey both chemical and physical laws physiological functions are regulated phenotype is a reflection of genotype phenotypes are a product of evolutionary processes. Adaptation: occurs over generations through evolution via natural selection; increases the frequency of genes that produce phenotypes that raise the likelihood of survival and reproduction (fitness); comparative method. Acclimatization: the physiological, biochemical or anatomical change within the lifetime of an individual due to chronic exposure to naturally occurring environmental conditions; generally reversible. Developmental changes: changes that occur in a programmed way as the animals mature from conception to adulthood and then senescence changes controlled by periodic biological clocks: changes that occur in repeating patterns. Structure of skeletal muscle: muscles made up of bundles (fascicles) of muscle fibers (multinucleated - large fibres need many nuclei to service amount of cytoplasm) myofibrils sarcomeres myofilaments (thick and thin filaments)
