is large and expanded at the chalazal end of the seed, a hypostase is present, endosperm is apparently free nuclear (Biradar and Mahabale, 1976), and the cotyledons of the embryo are straight.
cyst of the penis: a report of two cases with immunohistochemical investigation.
Differential diagnosis for a cystic lesion in the perineum includes a tail gut cyst (a developmental lesion lined with gastrointestinal epithelium which would be retro-rectal (7), perineal median raphe
cysts (8) or urethral and seminal vesicle cysts which would be connected to the urological system.
Langdon, chief financial officer at Emtelle, said: "We've been looking for opportunities in this key emerging market for some time and this acquisition allows us to share technological insight and widen Parixit Industries Limited's product ranges.
The team examined the nerve cells present in the region of the brain called dorsal raphe
Certain neuronal pathways regulate arousal and the sleep-wake cycle, including the cholinergic basal forebrain nuclei, the serotoninergic dorsal and median raphe
nuclei, and the noradrenergic locus coeruleus (Saper, Chou, & Scammell, 2001; Vitiello & Borson, 2001).
Specialized cells in a part of the brain called the raphe
nuclei produce serotonin.
Hypocretinergic neurons also send projections into brainstem areas that control various aspects of wake and rapid eye movement (REM) sleep (the locus ceruleus, raphe
nuclei and reticular formation).
The contemporary theory for the mechanism of NREM sleep thus suggests a reciprocal interaction between two antagonistic neurons in the VLPO of the anterior hypothalamus and wake-promoting neurons in the tuberomammillary nuclei of the posterior hypothalamus, as well as locus coeruleus, dorsal raphe
, basal forebrain and mesopontine tagmentum (6,20).
Input to this system comes from the prefrontal cortex, and output flows through the noradrenergic fibers of the locus coeruleus, and serotonergic fibers from the median raphe
neurons with thin, unmyelinated, corticopedal fibers projecting from cell bodies in the brain stem, including the acetylcholine neurons of the nucleus basalis of Meynert (detail learning), the norepinephrine neurons of the locus coeruleus (reward-related learning/Skinnerian conditioning), and the serotonin neurons of the dorsal raphe
nucleus (classical/ Pavlovian conditioning).
The hilum has rounded outline, and the micropylar region and raphe
may be observed.