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
The capital of the eponymous province in southeast...
…The third type of harp is the frame harp, which ...
...Tools made from this sintered material are use...
...The mountain was once named Peak 30, but was l...
…An Italian naturalist and astronomer from the la...
...There are approximately 60 known minerals that...
In addition to these basic pricing policies, ther...
A city in the state of Saxony in eastern Germany. ...
… In Europe, since the Middle Ages, it was though...
Also called a flashing star. A type of variable st...
...The four stages that Indian Brahmins should go...
…The following year, he had his right knee amputa...
A type of radio telescope. A device that combines...
The components of a unit vector in a given direct...
...Generally, a cost is the price that an economi...