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19 Cards in this Set
- Front
- Back
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What are the primary gonads in the male reproductive system?
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testes
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What do the testes produce?
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gametes and testosterone
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What has to happen in order for producing and storing sperm?
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an ideal temperature 3 degrees celsius lower than body temperature
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what is the scrotum homologous to in the female?
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labium majora
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What is a skin-covered sac between the thighs of a male?
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scrotum
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How is the scrotum subdivided?
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into 2 compartments separated by the scrotal septum
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what is the scrotal septum?
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separates the 2 compartments of the scrotum
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What helps limit trauma or infection ton one testis?
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Having 2 compartments in the scrotum
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What is located externally on the scrotum (a distinct, ridgelike seam at the midline)?
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raphe
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Where is the raphe?
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It persists in an anterior direction along the inferior surface of the penis and in a posterior direction to the anus
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What is the wall of the scrotum composed of?
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external layer of skin, a thin layer of superficial fascia immediately internal to the skin, and a layer of smooth muscle, the "dartos muscle" immediately internal to the fascia.
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Where is the dartos muscle?
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immediately internal to the fascia which is deep to the skin
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When the testes are exposed to elevated temperatures, what does the dartos muscle do, and what does this action cause?
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relaxes, which unwrinkles the skin of the scrotum and allows the testes to be placed further away from the body
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What muscle contributes to unwrinkling the skin of the scrotum and allows the testes to be placed further away from the body?
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dartos muscle, when relaxed
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When the dartos muscle is relaxed, what happens to the testes that, and why is this important?
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the inferior placement away from the body cools the testes
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As the dartos muscle relaxes, what muscle also relaxes?
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cremaster muscle
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What is a synergist to the dartos muscle?
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cremaster muscle
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What is the cremaster muscle a continuum of?
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the internal oblique muscle of the abdomen
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When the testes are exposed to reduced temperatures, what muscles will be impacted and what is their action, why?
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dartos and cremaster contract, pulling the testes closer to the body in order to conserve heat.
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