Here's what rhymes with hypothalamus.

Consider these alternatives

hypothalamic / dynamic pituitary / very cortex / vortex secretion / completion cortisol / small ventromedial / medial cingulate / late dopamine / nine oxytocin / chosen secreted / treated stimulates / states activates / states adrenal / renal geniculate / perigeniculate inhibition / position norepinephrine / line secretes / treaties subthalamic / dynamic