Skeletal muscle is made up of individual muscle cells or myocytes, known as muscle fibers. They are formed from the fusion of developmental myoblasts (a type of embryonic progenitor cell that gives rise to a muscle cell) in a process known as myogenesis.Muscle fibres are cylindrical, and multinucleated.keletal muscle is a form of striated muscle tissue which is under the voluntary control of the somatic nervous system. It is one of three major muscle types, the others being cardiac muscle and smooth muscle.
Parakeets lay their eggs over a 9-16 day period depending how many eggs they produce as they can only lay one eggs every 2-3 days. It takes parakeets 18-21 days for the eggs to hatch.
Confidence votes 20. They usually will start laying eggs at about 20 weeks.depending on whether they are feee roaming or in a coop. If they are fee roaming they can start laying as late as 23 weeks. It's true that they do not need a rooster to lay eggs, but they do need a rooster for the eggs to hatch. Silkies start laying (usually) between 7-9 months, which is later than most chickens, I have an 8 month old that hasn't started laying yet, but a plus to that is, the la â¦ ter in life your silkies lay, the more eggs you will get, and the more consistent with laying she will be.