a person who is skilled in relating stories and anecdotes interestingly. Origin of raconteur. 1820-1830. 1820-30; < French, equivalent to racont(er) to tell (Old French r(e)- re- + aconter to tell, account) + -eur -eur.
1 An abnormal curve of the lumbar spine is lordosis, also called sway back. 2  An abnormal curve of the thoracic spine is kyphosis, also called hunchback.  An abnormal curve from side-to-side is called scoliosis.
The T-tubules are part of the triad that interconnect the sarcoplasmic reticulum (SR). They make contact with the terminal cisternae of the SR. Their function is to conduct the action potential throughout the muscle fiber, deeper into the muscle for contraction.