sarcolemma
[Gk. sarx, the flesh + lemma, husk]
The specialized plasma membrane surrounding a muscle cell (muscle fiber); capable of propagating action potentials.
sarcomere ...
sarcolemma for plasma membrane
sarcoplasmic reticulum for endoplasmic reticulum
sarcosome for mitochondrion
sarcoplasm for cytoplasm ...
sarcolemma The thin, noncellular sheath that encloses a striated muscle fiber.
Sarcomastigophora The protozoan phylum where members possess flagella, pseudopodia, or both for locomotion and feeding; single type of nucleus.
Sarcolemma in myocytes
Oolemma in oocytes.
Permeability
The permeability of membranes is the ease of molecules to pass it. This depends mainly on electric charge and, to a slightly lesser extent, on the molecule mass.
The sarcolemma, or tubular sheath of the fiber, is a transparent, elastic, and apparently homogeneous membrane of considerable toughness, so that it sometimes remains entire when the included substance is ruptured.
Sarcoplasm (cytoplasm) filled by parallel myofibrils
Sarcolemma (surface membrane) forms deep tubes (T tubules) into the sarcoplasm along its length
Network of membranes called sarcoplasmic reticulum (ER) ...
 See also: Human, Tissue, Action, Trans, Cells
  
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