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physiology chapter 20 The reproductive system

physiology chapter 20 The reproductive system - Chapter 20...

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Chapter 20 The Reproductive System
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Reproductive System Primary reproductive organs ( gonads ) Consist of Pair of ______ in male Pair of ______ in female Functions of mature gonads Produce ________ (gametogenesis) Spermatozoa (sperm) in male Ova (eggs) in female Secreting ________ Testosterone in males Estrogen and progesterone in females
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The male reproductive system
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Female Reproductive Functions and Organs Oviducts (Fallopian tubes) Pick up ova on ovulation/fertilization Uterus ____________ Responds to estrogen and progesterone Myometrium (smooth muscle) Cervix Single, small opening that serves as pathway for sperm Serves as passageway for delivery of baby from uterus Vagina Muscular tube that connects uterus to external environment
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Male Reproductive Physiology Testes Dual function 1. Produce _______ Occurs within _____________ tubules (promoted by Sertoli cells) 2. Secrete _____________ Produced by _______ cells that lie in connective tissue between seminiferous tubules Derived from cholesterol precursor
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Male Reproductive Physiology — Hypothalamic-pituitary-testicular axis Hypothalamus Gonadotropin-releasing hormone activity increases at puberty Anterior pituitary gland 1. Luteinizing hormone (LH) Binds to receptors on _______ cells testosterone 2. Follicle stimulating hormone (FSH) Stimulates Sertoli cells in spermatogenesis Spermatogenesis requires testosterone and FSH Testosterone exhibits ________ feedback on release of LH and FSH
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Sexual Intercourse – Male erection and ejaculation Erection reflex Primarily mediated by _______ nervous system Erectile tissue arterioles the only ones with ______________ receptors Initiated by local stimulation of the glans, psychogenic stimuli Relaxation of smooth muscle tone vasodilation engorgement of erectile tissue with blood Ejaculation Primarily mediated by ________ nervous system
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Sexual intercourse – Female Female erectile tissue Tactile stimulation of clitoris a powerful stimulus Engorgement of labia, erection of clitoris secondary to vasodilation of arterioles (PNS) Orgasm achieved via the SNS Erectile tissue Muscle covering erectile tissue
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Female Reproductive Physiology
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