The front of it encloses a cavity, as in the third ventricle, and at dorsal portion of the mesencephalon is the tectum
, at the tegmentum is ventrally.
These species includes Spotted Pond turtle (Geoclemys hamiltonii), Crowned river turtle (Hardella thurjii), Brown roofed turtle (Pangshura smithii), Indian roofed turtle (Pangshura tectum
), Indian narrow-headed soft-shell turtle (Chitra indica), Indian soft-shell turtle (Nilssonia gangeticus), Indian peacock soft-shell turtle (Nilssonia hurum) and Indian flapshell turtle (Lissemys punctata).
(2000a) showed that the tectum
is underlain by fine granules; this was questioned by Hesse and Zetter (2007), but granules are clearly visible in fig.
The telencephalon and optic tectum
were removed and immediately placed into 50 [micro]L or 100 [micro]L, respectively, of homogenization buffer in a 1.5 mL microcentrifuge tube.
TOKYO, Japan, March 6, 2018 -- Researchers here have shed light on the regenerative processes by neural stem cells using a stab injury model in the optic tectum
, a less studied area of the brain, of the adult zebrafish.
Both CRMP2 and CRMP4 were highly expressed in the retinal ganglion cell layer when retinal axons were crossing the chiasm and approaching the tectum
According to Saenz de Rivas (1976), exine is composed by endexine, which is an internal reticulated layer, and by an external gemmate layer called ectexine that shows a striate without tectum
. Bahadur et al., (2013) mentioned that J.
Agababian (1972) described pollen grains with a fine granular exine and perforated tectum
. Similarly, Praglowski (1974) considered that most pollen grains in this family have a perforated or slightly rugulate tectum
, and occasionally a microreticulate exine.
In a subsequent regenerative process, the damaged RGCs regrow their axons and reinnervate the target areas in the brain, of which the optic tectum
is by far the most important [105-107].
Midbrain comprises of tectum
and tegmentum while the hindbrain composed of cerebellum, pons and medulla.Cerebrum performs thinking and problem solving actions.Cerebellum establishescoordination between the body parts (for example, the coordination of legs while walking).
7-8), clearly dentate before apex, lateral border weakly carinate; tectum
large, uniformly convex, with 2 basal rounded prominences; aedeagus much longer, sclerotized support curved downward and widely bifurcate apically (Figs.
Common causes of hydrocephalus in pediatric age found in present study: Aqueductal stenosis: The growth of the tectum
and tegmentum makes the lumen of the neural tube narrow in the region of mesencephalon, leading to narrowing of aqueduct of Sylvius.