Progressing to higher levels, usually used in reference to the nervous system.
a. colon dilation — dilation of the spiral or coiled colon in cattle, usually a part of torsion of the mesentery of the colon; characterized by acute abdominal pain and distended loops of intestine in the right flank.
a. hemorrhagic myelomalacia — see progressive hemorrhagic myelomalacia.
a. hematomyelia — see progressive hemorrhagic myelomalacia.
a. reticular activating system — see reticular activating system.