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.
When people talk about spina bifida, most often they are referring to myelomeningocele. Myelomeningocele is the most serious type of spina bifida. With this condition, a sac of fluid comes through an opening in the babyâs back. Part of the spinal cord and nerves are in this sac and are damaged.
Myelomeningocele, a type of âopen spina bifida,â is the most serious form of the disease. In myelomeningocele, a portion of the babyâs spinal cord and surrounding nerves protrude through an opening in the spine into an exposed, flat disc or sac that is visible on the back. This exposes the babyâs spinal cord to the amniotic fluid in the motherâs womb and can be harmful to the babyâs fetal development.