Vitamin B12
Yes. Vitamin B 12 usually maintain the sheath that surrounds and protects never fibers.
The endoneurium surrounds and protects the myelin sheath.
The delicate connective tissue that surrounds the skeletal muscle fibers and ties adjacent muscle fibers together is the endomysium.
Endomysium is the delicate connective tissue that surrounds individual muscle fibers (cells) within a muscle. It provides support and protection to the muscle fibers.
The connective tissue layer that holds fascicles together is called the perimysium. It surrounds and protects each bundle of muscle fibers (fascicles) within a muscle.
Vitamin C
The perimysium is the connective tissue that surrounds a fascicle (bundle of muscle fibers), while the epimysium surrounds the entire muscle. The endomysium is a connective tissue sheath that surrounds individual muscle fibers within a fascicle.
Epimysium, perimysium, and endomysium are made of dense irregular connective tissue. Epimysium surrounds the entire muscle, perimysium surrounds bundles of muscle fibers called fascicles, and endomysium surrounds individual muscle fibers.
The perineurium connective tissue covers and encapsulates bundles of nerve fibers called fascicles within a nerve. It is located between the endoneurium (which surrounds individual nerve fibers) and the epineurium (which surrounds the entire nerve).
Collagenous fibers are the tough fibers of connective tissue.
Fascia is up of sheets or bands of connective tissue fibres.
endomysium