Neural and Hormonal Activation of Sexual Behavior - Females Flashcards
After ovariectomy or menopause, women sometimes given
Testosterone
b/c increase human female receptivity, even during non-reproductive periods of cycle
Androstenedione
chemically like Testosterone
an Androgen produced by adrenals for sexual motivation
MPOA
responds to Androstenedione > GnRH»_space; stimulates ovaries and adrenals (short term positive feedback)
Ventro-Medial Hypothalamus (VMH)
region most activated during female sexual behavior
VMH connects to…
…Tegmentum (esp Periaqueductal Gray Area) > Basal Ganglia > SBN for rhythmic contractions, as in males
Periaqueductal Gray Area
produces Endorphins, including to suppress Pain
VMH and MPOA release
Dopamine to Nucleus Accumbens for reinforcement
VMH also signals Posterior Pituitary to release ____ at time of orgasm
Oxytocin
Oxytocin
also causes release of milk in lactating females, aids in bonding with offspring
After sex, females do NOT show same _______ release or ________
Prolactin
Refractory Period
VMH also responds to _______ in part by inc its sensitivity to Progesterone
…. to Estradiol
VMH also responds to input from _____ and _____
Medial Amygdala
Cerebral Cortex
Medial Amygdala
Pheromones
Cerebral Cortex
learning etc