1 Sodium (Na+) : Sodium is a vital electrolyte for muscle function, neuron function, blood pressure regulation, and blood volume regulation. 2  Over 99% of the sodium ions passing through the kidneys are reabsorbed into the blood from tubular filtrate.
splice (plural splices) (nautical) A junction or joining of ropes made by splicing them together. (electrical) The electrical and mechanical connection between two pieces of wire or cable. (cricket) That part of a bat where the handle joins the blade. Bonding or joining of overlapping materials.
Simple illustration of exons and introns in pre-mRNA and the formation of mature mRNA by splicing. In molecular biology and genetics, splicing is a modification of the nascent pre-messenger RNA (pre-mRNA) transcript in which introns are removed and exons are joined. For nuclear-encoded genes, splicing takes place within the nucleus after or concurrently with transcription.