The first instar is sac-like and lacks both trophi and tracheae but at the caudal end it bears a pair of finger-like processes.
12.
Initially, the gut tube from the caudal end of the foregut to the end of the hindgut is suspended from the dorsal body wall by dorsal mesentery.
13.
At the pyramids'most caudal end, the corticospinal axons decussate ( or cross over ) the midline and continue down the spinal cord on the contralateral side.
14.
From the posterior end of the heart there a broad elevated but rounded ridge passes down the median line of the back to the caudal end of the body.
15.
Embryologically, the trigone of the bladder is derived from the caudal end of mesonephric ducts, which is of mesodermal origin ( the rest of the bladder is endodermal ).
16.
The microfilariae have a length of 200 ?m, and a width of 4.5 W . bancrofti " and the caudal end is blunt with a terminal nucleus.
17.
It is distinguished from its cogenerates by the gubernaculum structure in males, as well as the shape and structure of the females'cephalic and caudal ends, and their oesophagus.
18.
This species is characterized mainly by : length of spicules and length and structure of its gubernaculum; structure of male caudal end; body size; location in host and types of hosts.
19.
The abducens nucleus along with the internal genu of the facial nerve make up the facial colliculus, a hump at the caudal end of the medial eminence on the dorsal aspect of the pons.
20.
The tongue is protruded by contracting circular muscles that change the shape of the tongue and force it forwards and contracting two genioglossal muscles attached to the caudal end of the tongue and to the mandible.
