It is giving value intrinsic and extrinsic properties. 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. Satisfaction is based upon motivation, which can be intrinsic or extrinsic. From this perspective, the concept of distinguishing between intrinsic and extrinsic forces is irrelevant. Alternatively, utility value has both intrinsic and extrinsic components. A photoelectric device can be either intrinsic or extrinsic. Motivation stems from two different sources, intrinsic and extrinsic motivation. Energy bands in silicon, intrinsic and extrinsic silicon. "N"-linked glycans have intrinsic and extrinsic functions. There are two types of stacking faults caused by Frank partial dislocations&colon; intrinsic and extrinsic. Generally, motivation is conceptualized as either "intrinsic" or "extrinsic". The eight muscles of the human tongue are classified as either "intrinsic" or "extrinsic". The muscles of the larynx are divided into "intrinsic" and "extrinsic" muscles. Defects due to both external and intrinsic factors may appear.