Dark and white meat. Chickens have fast and slow twitch muscle, too. Dark meat, like in chicken legs, is mainly made up of slow twitch fibres. White meat, like in chicken wings and breasts, is largely made up of fast twitch muscle fibres.Chickens use their legs for walking and standing, which they do most of the time.ark and white meat. Chickens have fast and slow twitch muscle, too. Dark meat, like in chicken legs, is mainly made up of slow twitch fibres. White meat, like in chicken wings and breasts, is largely made up of fast twitch muscle fibres.
Overview of Encephalocele/Meningocele. A portion of brain has herniated through the temporal bone and dura into the middle ear. An encephalocele is a region of herniated brain through bone. The term meningocele refers to herniated dura, which is the covering of the brain. A combination of herniated brain and dura is called a meningoencephalocele.
A myelomeningocele (pronounced my-elo-men-IN-go-seal) is a defect of the backbone (spine) and spinal cord. Before birth, the babyâs spine, the spinal cord and the spinal canal do not form or close normally. A myelomeningocele is the most serious form of spina bifida. In babies with myelomeningocele: 1  The bones of the spine (vertebrae) do not form the normal way. 2  A small sac extends through an opening in the spine. 3  The sac holds cerebrospinal fluid (CSF) and tissues that protect the spinal cord (meninges). 4  The sac may also contain parts of the spinal cord and nerves.