Question

in cockroach the number of ganglia along the ventral nerve cord is

Answer 1

The sub- oesophageal ganglia are a pair of large ganglia present on the ventral side of oesophagus. The ventral nerve cord runs along the ventral wall of thorax and abdomen and possesses nine fused ganglia, out of which three are thoracic and six are abdominal in position.

Answer 2

Answer:

Ganglia are ovoid structures containing cell bodies of neurons and glial cells supported by connective tissue. Ganglia function like relay stations - one nerve enters and an other exits. The structure of ganglia is illustrated by the example of the spinal ganglion.