Excessive ROS can induce apoptosis through both the extrinsic and intrinsic pathways. Evidence for crosstalk between the extrinsic and intrinsic pathways exists in the Fas signal cascade. Motivation factors in crowdsourcing are often a mix of intrinsic and extrinsic factors. Foroozen divides the causes of chiasmal syndromes into intrinsic and extrinsic causes. Evidence suggests that this may take place through extrinsic and intrinsic caspase pathways. It can distinguish an intrinsic from an extrinsic neoplasm. Motivation stems from two different sources, intrinsic and extrinsic motivation. Semiconductor doping is the process that changes an intrinsic semiconductor to an extrinsic semiconductor. It is giving value intrinsic and extrinsic properties. Dental erosion is tooth surface loss caused by extrinsic or intrinsic forms of acid. Satisfaction is based upon motivation, which can be intrinsic or extrinsic. "N"-linked glycans have intrinsic and extrinsic functions. Whereas, cellular cementum is quite thick and contains both extrinsic and intrinsic collagen fibres. From this perspective, the concept of distinguishing between intrinsic and extrinsic forces is irrelevant. Muscles of the fingers can be subdivided into extrinsic and intrinsic muscles.