Unlike in mastodonsaurids, there are no ridges for attachment of jaw musculature.
From there, efferent impulses are carried by the vagus and phrenic nerves to the stomach and abdominal musculature, resulting in vomiting.
M shows the position of the peripheral musculature.
Finally, the body musculature was removed and examined in the same way.
The conduction axis (orange) passes in the musculature between the perimembranous defect and the muscular inlet defect.
Cynodonts had a more mammal-like jaw musculature, but the ear ossicles were still attached to the lower jaw, as they are in reptiles.
Moreover, the basic body musculature of a mammalian young embryo is more reptilian-like than mammalian and should require a more primitive cortical control.
They involve regular contraction of perivaginal musculature and cause muscular hypertrophy and possibly inhibition of detrusor contraction by a local inhibitory neural reflex.
