28_ActiveLecturePRS

28_ActiveLecturePRS - Which structures move with the testes...

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Which structures move with the testes during their descent from the abdomen? 1. Testicular artery, spermatic cord, and seminal vesicles 2. Ductus deferens, testicular artery, lymph vessels, and nerves 3. Lymph vessels, gubernaculum testis, and a pocket of peritoneal cavity 4. Testicular artery, spermatozoa, and semen
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On a warm day, why will the cremaster muscle be relaxed? 1. Normal sperm development depends on the testes being 1.1oC warmer than body temperature. 2. Healthy levels of testosterone are maintained by fluctuations of the cremaster muscle. 3. Normal sperm development depends on the testes being 1.1oC cooler than body temperature. 4. 1 and 2 are correct.
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When stem cells called spermatogonia divide, one differentiates into a primary spermatocyte. What happens to the second daughter cell? 1. It undergoes atresia. 2. It secretes testosterone. 3. It continues through the layers of the seminiferous tubule without differentiating. 4. It remains in the outer layer of the seminiferous tubule.
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Which of the following occurs during the process of spermiogenesis? 1. Spermatids differentiate into mature sperm. 2. Primary spermatocytes begin meiosis. 3. Primary spermatocytes give rise to secondary spermatocytes. 4. All of the above are correct.
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Which of the following is not a function of sustenacular cells? 1. Maintain the blood-testis barrier 2. Promote division of spermatogonia 3. Produce androgens, particularly testosterone 4. Regulate FSH and GnRH secretion Answer:
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How is the generation of four sperm possible from one spermatogonium? 1.
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28_ActiveLecturePRS - Which structures move with the testes...

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