Sex Differences and Organizational Effects of Androgen in Spinal Cord Motor Nuclei

William Grisham, Heidi B Jones, Sun Hee Park

Abstract


This article describes a laboratory module taught at UCLA and offers digitized microscope images that will allow instructors to recreate this module at their home institutions with only a computer required. This module allows for 1) an exploration of the effects of hormones on neural development, 2) the demonstration of sex differences in the nervous system, 3) the production of robust and statistically significant data by novice undergraduates, 4) the discussion of sophisticated statistical analyses (ANOVAs with significant main effects and an interaction), and 5) the understanding of at least some of the neuroanatomy of the spinal cord. Specifically, this module both replicates and extends a previously published experiment on sexually dimorphic neurons in the spinal cord of rats (Grisham et al., 1992), which examined the effect of antiandrogen exposure (Flutamide) in utero on sexually dimorphic spinal motoneurons in male and female rats.

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