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Unit 5 Chapter 27

Quiz 100

QuestionAnswer
Why would an enlarged prostate interfere with urination? It compresses the urethra.
Sperm cells reach maturity in the __________blank. epididymis
A sperm count any lower than __________blank million sperm per mL of semen is usually associated with infertility (sterility). 20 to 25
True or False: Nurse cells secrete inhibin, which regulates the rate of sperm production. True
Men have only one __________blank. prostate
Which of the following is generally accepted as a secondary sex characteristic? The enlargement of the breasts
Which of the following are not found in or around the seminiferous tubules? Interstitial cells Germ cells Nurse cells Spermatids Corpus cavernosum cells Corpus cavernosum cells
Which of the following is not a change in the male body that results from puberty? Deepening of the voice Gain in muscle mass Growth of the scrotum and penis Acne These are all changes associated with male puberty. These are all changes associated with male puberty.
True or False: Sperm travels to the ampulla of the ductus deferens before reaching the spermatic cord. False
The countercurrent heat exchanger that prevents arterial blood from overheating the testes is the __________blank. pampiniform plexus of veins
True or False: The scrotum contains the testes and spermatic cords. True
__________blank have 46 chromosomes, whereas __________blank have 23. Primary spermatocytes; spermatids
True or False: At early puberty, follicle stimulating hormone (FSH) and luteinizing hormone (LH) stimulate enlargement of the testes. True
Male infertility (sterility) refers to __________blank. the inability to fertilize an egg
The gene that codes for the testis-determining factor (TDF) is found in or on the __________blank. Y chromosome
Which of the following is not a function of the nurse cells? They secrete inhibin. They secrete androgen-binding protein. They secrete testosterone. They protect and support the germ cells. Their tight junctions form the blood-testis barrier. They secrete testosterone.
True or False: The mechanism that keeps the testes cooler than the body's core temperature is called descent of the testes. False
Which of the following is inhibited by testosterone? Libido Development of secondary sex organs Development of secondary sex characteristics Gonadotropin-releasing hormone (GnRH) secretion Sperm production Gonadotropin-releasing hormone (GnRH) secretion
When do the testes start secreting testosterone? In the first trimester of fetal development
True or False: Spermiogenesis is the last stage of meiosis. False
The __________blank is the gonad and the __________blank is the gamete. testis; sperm The ovary; egg
Which of the following are primary sex organs? Ova Uterine tubes Breasts Ovaries Scent glands Ovaries
Whether an organism will be genetically male or female is determined by __________blank. the sperm
The penis is homologous to the __________blank. clitoris
The haploid (n) result of meiosis I is called a __________blank. secondary spermatocyte
Created by: Gluis5974
 

 



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