### configurations | junction:

Gap junction
* act as mechanical links, holding muscles together as they contract.
* affect that voltage.
* allow exchange through pores between cells
  - potassium to flow from hair cells to neighboring cells
  - the direct transmission of ions and sugars between connected mammalian cells
* appear early between cells
  - to allow greater passage of molecules dorsally than ventrally
* are clusters of transmembrane channels that connect the cytoplasms of adjacent cells
  - everywhere, occurring in all multicellular organisms from sponges on up
  - open pathways between the cytoplasm of two adjacent cells
  - present in essentially all tissues of all animal species
  - transmembrane channels that link the cytoplasms of adjacent cells
  - ubiquitous
  - very important for allowing cells to communicate with one another
* can contribute to the production of seizure like events.
* connect cells or fibers
  - the cells electrically so that they contract together as labor begins
* keep cells from tearing apart.
* mediate electrical and chemical coupling between cells.
* permit the cytoplasm of adjacent cells to communicate.
* serve as direct connection between cytoplasm of adjacent cells
  - to coordinate tissue behaviors
* take on a variety of structures.

Interchange
* are configurations
  - interaction
  - junctions
  - part of highways
  - paved roads
* revolutionizes communication by breaking down the barriers of conventional messaging.

### configurations | junction | interchange:

Foreign exchange
* are exchanges
  - monetary transactions
* can also have a direct impact on a country's interest rates.
* is an interchange
  - based on a market determined exchange rate
  - freely convertible both into and out of the country
  - readily convertible at all major banks
* rates Historical and current exchange rates for the world's currencies.
* spent on cars and on caviar is foreign exchange lost.

### configurations | junction | interchange:

Reciprocity
* acts as a form of online transaction.
* allows most radar and communications systems to operate with only one antenna.
* also applies to concessions that people make to one another
  - works in diffusion and potential problems
* characterizes the relationship between bird and human.
* comes from a sense of obligation.
* constitutes an important exchange system in every society.
* exists with most states.
* given within the culture as people support each other.
* has a long and proud tradition within socialist thought.
* involves dialogue and communication among two persons or groups.
* is about giving and receiving.
* is also part of a relationship, and each relationship is in various ways unique
  - an interchange
  - based on the fields of testing, methods and analytes
  - both the operative principle and the wellspring of trust
  - critical helping people take the time to engage and participate in an exchange
  - difficult for dependent elders in nursing homes to manage
  - facilitated by individual recognition and long-term memory
  - intrinsic to the human condition
  - necessary in a relationship if it is to grow and mature
  - one method in the job search process
  - part of a healthy relationship
* is the foundation of the idea of a scheme
  - mother of retention
  - third dimension and is of great importance in every relationship
* loss of film speed for long exposures.
* means that both networks charge the same for interconnection
  - the sharing of meaning
* mutual exchange of privileges.
* operates in many social relationships, especially with visits and dinners.
* privilege extended to visiting students and graduates.
* widely observed phenomenon for which evolutionary foundations are posited.