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25 Cards in this Set
- Front
- Back
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testis function is to produce ____ at ____
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sperm - puberty
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epididymus function
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stores sperm
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4 structures of testis
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seminiferous tubules - rete testis - tunic albuginea - spermatic cord
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location of sperm production (spermatogenesis)
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seminiferous tubules
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sections of the seminiferous tubules are called
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lobules
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tunica albuginea is a white ____ ____ covering of the testis
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protective tissue
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the vas deferens is located in the ____, which also contain ____, ____ & the ____ muscle
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spermatic cord - veins - arteries - cremaster
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the cremaster muscle contracts to pull ____ ____ if too ____
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testes up - cold
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spermatogenesis takes __ days & is ____ throughout life
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72 - continuous
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sperm is formed from ____ cells called ____ in the ____ tubules
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stem - spermatogonia - seminiferous tubules
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spermatogonia develop to ____
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spermatocytes
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in spermatogenesis, spermatogonia form ____ ____ which are ____ & have 46 ____-____ chromosomes
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primary spermatocytes - diploid - double-stranded
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in spermatogenesis, primary spermatocytes undergo ____ to form ____ ____ which are ____ & 23 ____-____ chromosomes
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meiosis 1 - secondary spermatocytes - haploid - double-stranded
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in spermatogenesis, secondary spermatocytes undergo ____ to form ____, each with __ ____-____ chromosomes
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meiosis 2 - spermatids - 23 single-stranded
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spermatids are found close to lumen of ____ ____
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seminiferous tubules
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in spermiogenesis, spermatids form ____, ____ & ____
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acrosome - midpiece - tail
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in spermiogenesis, spermatid cytoplasm is ____
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lost
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in spermiogenesis, spermatids become ____, but still unable to ____
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spermatozoan - swim
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sustentacular cells are ____ cells
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supporting
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2 types of sustentacular cells
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sertoli cells - leydig cells
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sertoli cells are located between developing ____
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spermatocyte
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3 function of sertoli cells
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nourish - support - protect
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____ is a substance secreted by sertoli cells to inhibit ____
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inhibin - FSH
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leydig (interstitial) cells are located between ____ ____ & produce ____
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seminiferous tubules - androgens
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the scrotum contains the ____ muscle for protection
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dartos
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