The insect brain (supraesophageal ganglion) consists of two hemispheres, divided into anterior, middle, and posterior cerebrum. The dorsal anterior part of the protocerebrum is called the intercerebral pars intermedius. The ophthalmic nerves emerge from here, and a large number of neurosecretory cells are distributed there. Those close to the midline are called medial neurosecretory cells, and those close to the anterior edge of the protocerebrum are called lateral neurosecretory cells (NC). In the cecropia pupa, there are 6 types of cells, 4 types in the center and 2 types on the sides, for a total of 36 cells, and in Orthoptera, the number reaches several hundred. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
昆虫の脳(食道上神経節)は左右両半球から成り,前・中・後大脳にわけられる。このうち前大脳の背側前方部を脳間部という。ここからは単眼神経が出るとともに,神経分泌細胞が数多く分布している。正中線に近いものを中央神経分泌細胞medial neurosecretory cell,前大脳前縁に近いものを側神経分泌細胞lateral n.c.という。セクロピアサンのさなぎでは,中央部に4タイプ,側方に2タイプの計6タイプ36細胞があり,直翅(ちよくし)類ではその数は数百にのぼる。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
<<: Brainstem reticular formation - noukanmouyoutai
…It refers to covering a roof with wooden planks....
The air resistance of an aircraft that flies using...
...For example, cats have 13 pairs of thoracic ne...
A former town in Kitasaku District, eastern Nagano...
He was the son of an old physician from Meinohama...
It is also written as roji and pronounced as roji....
...After this election, Napoleon III was forced t...
...This is because when small producers expand pr...
…It evolved into beach seine nets in the early mo...
... More than 40 species of Tropaeolum are distri...
⇒Urashima Shrine Source: About Shogakukan Digital ...
One of the basic diplomatic policies of the Unite...
〘Noun〙 (It is said to be a word derived from the n...
This manor was located in Kaito and Nakajima count...
〘noun〙① During the Heian period, it was the succes...