For an erection to occur. A) there must be sufficient blood hydrostatic pressure

Question

For an erection to occur. A) there must be sufficient blood hydrostatic pressure B) the sacral spinal cord must be intact. C) nitric oxide must be present. D) All of the answers are correct. E) None of the answers is correct. The organ that delivers semen into the female reproductive tract is the A) urethra. B) ejaculatory duct. C) penis. D) corpus cavernosum. E) corpus spongiosum. The erectile tissue that surrounds the urethra is the A) membranous urethra. B) penile urethra. (C) glans penis. D) corpus spongiosum. E) corpus cavernosum. The primary role of FSH in mates is to A) stimulate the interstitial cells to produce testosterone B. stimulate the nurse cells to produce inhibin. C) initiate sperm production in the testes. D) develop and maintain secondary sex characteristics. E) influence sexual behaviors and sex drive. The pituitary hormone that stimulates the interstitial cells to secrete testoseterone is A) FSH. B) LH. C) ACTH D) ADH. E) GH.

Explanation / Answer

9. D. Erection is a physiological process in which penis become frimer. for this sufficient blood pressure should maintain and it is triggered by releasing of nitric oxide by autonomic nervous system. Erection is controlled by reflex arc.

10.C It is the organ which delivers semen into the female reproductive tract during copulation.

11.D. corpus spongiosum covers the urethra near the bottom surface.

12.C. FSH in males stimulates the production of spermetocytes to undergo first meiosis. this initiates the production of secondary spermatocytes.

13.E. GnRH which is released by hypothalamus initiates the release of FSH and LH which involve in the production of testosteron.

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