sentences:  Hormones that influence the behaviour of insects are excreted by neurosecretory cells (NCS) in the corpora cardiaca.Sponges, despite not having a neurosystem, do show signs of behaviour in response to external stimuli, but not much is known about neuro-sensory mechanisms in sponges and whether they possess all four of these drives.In order to explore the influences of the hypothalamus as a drive on the four Fs, researchers lesioned the lateral areas of the hypothalamus of rats.