Chapter 27 Anatomy Male Reproductive

Which of the following is the site where sperm are stored until they are ejaculated? tail of the epididymis body of the epididymis rete testis seminiferous tubule

If a male undergoes a vasectomy, which of the following can no longer take place? -passage of sperm cells from the rete testes to the epididymis duct -passage of sperm cells from the seminiferous tubules to the rete testes -passage of sperm cells from the epididymis to the penis -passage of sperm cells from the epididymis duct to the epididymis tail

Which of the following is/are contained within the spermatic cord? testicular arteries and veins epididymis seminiferous tubules rete testis

Viable sperm production is optimal below the body's core temperature. True False

Sperm is produced in the __________. ductus deferens epididymis seminiferous tubules ejaculatory duct

Why are the male testes located in the scrotum, outside the body? -The testes develop better outside the body. -Spermatogenesis is temperature sensitive. -Their external location is necessary for penile development. -It helps the male secondary sexual characteristics develop.

Which portion of the penis is removed during circumcision? glans penis prepuce (foreskin) bulb of the penis crus of the penis

Which of these male accessory ducts transports both sperm cells and urine? ejaculatory duct ductus (vas) deferens epididymis urethra

Which of these does NOT empty materials into the area of the prostatic urethra? prostate ductus (vas) deferens bulbo-urethral gland seminal gland

Which male reproductive structure is NOT correctly matched with its function? seminal vesicles: produce semen bulbourethral gland: neutralize urethra before ejaculation epididymis: produce sperm ductus deferens: carry sperm toward ejaculation

What is the function of meiosis? -to produce cells with double the chromosome number of the original cell -to produce genetically identical cells through the two nuclear divisions -to produce cells with half the chromosome number of the original spermatogonium or oogonium -to produce four cells, each with identical chromosomes

Which of these cells would contain 23 unpaired chromosomes? spermatogonia secondary spermatocytes primary spermatocytes early spermatids

Which of the following cells remains at the basal lamina to continue the pool of dividing germ cells? type A daughter cells type B daughter cells primary spermatocytes secondary spermatocytes

The number of chromosomes in a human gamete is __________; this is referred to as a __________ chromosome number. 23; haploid 23; diploid 46; haploid 46; diploid

Which portion of the sperm contains the enzymes needed to penetrate the oocyte? midpiece acrosome tail head

What is the product of spermatogenesis? capacitation of sperm formation of semen formation of haploid sperm activation of spermatids

What is the function of the blood-testis barrier? -to provide only select nutrients to the developing sperm -to ensure that semen contains only sperm and seminal fluid -to filter out male sex hormones -to prevent activation of the immune system of the male against the developing sperm

What is the testicular target for follicle-stimulating hormone (FSH)? interstitial endocrine cells (Leydig cells) spermatogonia spermatozoa sustentocytes (Sertoli cells)

Which hormone promotes the formation of secondary sex characteristics such as the appearance of pubic, axillary, and facial hair; enhanced hair growth on the chest; and a deepening voice? -testosterone -follicle-stimulating hormone (FSH) -gonadotropin-releasing hormone (GnRH) -luteinizing hormone (LH)

The release of __________ encourages sustentocytes to release __________. -luteinizing hormone; testosterone -inhibin; testosterone -luteinizing hormone; androgen-binding protein -follicle-stimulating hormone; androgen-binding protein

In males, which of the following includes the correct target and result of LH stimulation? -interstitial cells: androgen secretions -sustentacular cells: increase testosterone -sustentacular cells: increase spermatogenesis -interstitial cells: ABP secretions