Lordosis is hardwired in the spinal cord and receives modulatory afferents from the forebrain . a ) Median preoptic nucleus; b ) Anterior hypothalamic nucleus; c ) Ventromedial hypothalamic nucleus; d ) Midbrain reticular formation; e ) Vestibulo-spinal tract; f ) Reticulo-spinal tract; g ) Dorsal roots L1, L2, L5, L6 and S1
12.
The part of the brain examined is the anterior hypothalamic nucleus ( AHdc ), a homologue of SDN-POA . Comparison of the AHdc nucleus volumes between Japanese macaque and rhesus macaque ( a closely related sister species of Japanese macaque ) shows that there is no significant difference between the volume of AHdc in more male-typical macaques and that in female-typical macaques.
