The idea that the hypothalamus is the source of humoral factors that support the functions of anterior pituitary cells came from the fact that grafts of anterior pituitary tissues remained functional when transplanted to the
median eminence, but not when transplanted to other regions of the brain (e.g., temporal lobe of cerebrum) or in the highly vascularized renal capsule.
Ananteris dorae can be readily distinguished from both species since in the former the anterior margin of the carapace is weakly, evenly concave and lacking
median eminence (Fig.
As the
median eminence is in contact with areas of the body outside the blood-brain barrier, researchers think it may be detecting chemicals in the blood, and transferring signals about the condition of the body into the hypothalamus, which can then make decisions about eating.
The other mechanism is the inhibitory effect of orexin on the GnRH-secreting neurons at the
median eminence (ME), as it is suggested that a subset of GnRH neurons responsible for episodic GnRH, and hence LH secretion, is located within the medial basal hypothalamus (MBH) (Boukhliq et al., 1999).
Alternate cadmium exposure differentially affects amino acid metabolism within the hypethalamus,
median eminence, striatum and prefrontal cortex of male rats.