The following sketch represents the feedback loops that govern the production of sperm in the testis. Use the word bank provided to complete this sketch by labelling all important hormone-producing structures, target sites, hormones produced, and effects caused. 147 148 a. Inhibin inhibits anterior pituitary. b. Negative feedback inhibits hypethalamus. C. Hypothalamus secrets releasing hormones. d. Anterior pituitary secretes FSH and LH 155 e. Rising levels of testosterone in the blood. 1. Inhibin released by testis. 9 Sperm production h. Testis secretes testosterone. I. Negative feedback 154 149 152 i Male sexual differentiation Puberty Male physique Sex drive 156 153 150 151

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