Welcome, connected, there is many other synonyms.
http://www.thesaurus.com/browse/connection
The movement of water across a membrane.
Answer is: C
Hopefully this helps you, have a nice day! :)
in addition to that; (it's pairs of 4 types of (c))
Rather, each myelin sheath insulates the axon over a single long section and, in general, each axon comprises multiple long myelinated sections separated from each other by short myelin sheath-gaps called nodes of Ranvier. ... In the CNS, axons carry electrical signals from one nerve cell body to another.