Transverse tubules. - tubules formed by invaginations of the sarcolemma and flanked by the sarcoplasmic reticulum, they carry action potentials deep into the muscle fiber. T tubules and SR provide tightly linked signals for muscle contraction. T tubules at each A band/I band junction-continuous with the sarcolemma.
Standard Sizes of Sofas. Sofas vary in size, from 6 to 8 feet long and 32 to 40 inches deep for a standard size sofa, to 4 to 6 feet long and 28 to 30 inches deep for a loveseat.The actual depth of the seating area is reduced by the depth of the sofa's arms and back of the sofa.ofas vary in size, from 6 to 8 feet long and 32 to 40 inches deep for a standard size sofa, to 4 to 6 feet long and 28 to 30 inches deep for a loveseat.
Answers. Best Answer: Couches I believe tend to be 82-90 inches long. Love seats I think can be anywhere from 62-72 inches long. I am not aware of a standard size. I think a lot depends of the style of the couch or loveseat.E: What&#39;s the average size of a couch and love seat? I&#39;m moving into a new apartment and I was wondering if there is a relatively standard size for couches and love seats.