Please answer all questions. The numbers at the end of each question refer to the textbook page where the question topic is discussed.
 |
1 | |
Which of the following statements is not true regarding sexual reproduction? (698) |
| | A) | It provides for genetic diversity through genetic recombination. |
| | B) | It eliminates changes in the gene pool. |
| | C) | It requires the production of two types of gametes. |
| | D) | It requires two distinct body forms within the species. |
| | E) | It is beneficial to a population. |
|
|
2 | |
The primary sex organs (698) |
| | A) | are those structures that are externally visible |
| | B) | produce the gametes and sex hormones |
| | C) | include the testes and penis |
| | D) | are sexual attractants |
|
|
3 | |
The secondary sex organs (698) |
| | A) | are those organs that differ in males and females |
| | B) | produce the gametes and sex hormones |
| | C) | regulate meiosis |
| | D) | are essential in caring for and transporting gametes |
| | E) | are functional at birth |
|
|
4 | |
Which of the following statements concerning the scrotum is false? (700) |
| | A) | It is located within the perineum. |
| | B) | It is partially subdivided into two compartments by a fibrous septum. |
| | C) | Its external appearance varies depending on environmental conditions. |
| | D) | It supports, protects, and regulates the position of the testes. |
|
|
5 | |
Which of the following contract(s) in response to temperature changes? (700) |
| | A) | perineal raphe |
| | B) | dartos muscle |
| | C) | median septum |
| | D) | cremaster muscle |
| | E) | both b and d |
|
|
6 | |
The temperature of the testes is maintained at about (700) |
| | A) | 35°C |
| | B) | 37°C |
| | C) | 40°C |
| | D) | 42°C |
|
|
7 | |
The seminiferous tubules function to (702) |
| | A) | nourish spermatids |
| | B) | produce spermatozoa |
| | C) | store mature sperm |
| | D) | produce steroids |
| | E) | both a and b |
|
|
8 | |
The interstitial cells (cells of Leydig) (703) |
| | A) | nourish spermatids |
| | B) | produce testosterone |
| | C) | produce spermatozoa |
| | D) | secrete alkaline fluid |
| | E) | both b and d |
|
|
9 | |
Which of the following is the correct sequence regarding production and passage of spermatozoa? (703) |
| | A) | interstitial cells, efferent ductules, ampulla, and epididymis |
| | B) | interstitial cells, rete testis, epididymis, and ampulla |
| | C) | seminiferous tubules, rete testis, efferent ductules, and epididymis |
| | D) | seminiferous tubules, ampulla, efferent ductules, and ductus deferens |
|
|
10 | |
The structure of a spermatozoon includes all of the following except the (704) |
| | A) | cilia |
| | B) | acrosome |
| | C) | mitochondria |
| | D) | flagellum |
| | E) | nucleus |
|
|
11 | |
The life expectancy of healthy spermatozoa ejaculated into the vagina is (705) |
| | A) | 24 to 48 hours |
| | B) | 48 to 72 hours |
| | C) | 3 to 4 days |
| | D) | 5 days |
|
|
12 | |
All of the following are spermatic ducts except the (707) |
| | A) | epididymis |
| | B) | urethra |
| | C) | ductus deferens |
| | D) | ejaculatory duct |
|
|
13 | |
Which of the following is characteristic of the ductus deferens? (707) |
| | A) | It extends from the testis to the prostate. |
| | B) | It secretes glucose to keep the sperm viable. |
| | C) | It conveys sperm from the epididymis to the ejaculatory duct. |
| | D) | It is totally empty except during the brief periods of ejaculation. |
| | E) | All of the above. |
|
|
14 | |
Spermatozoa are stored prior to ejaculation in the (707) |
| | A) | epididymides |
| | B) | seminal vesicles |
| | C) | ductus deferentia |
| | D) | ejaculatory ducts |
| | E) | both a and c |
|
|
15 | |
Which of the following is (are) not part of the spermatic cord? (707) |
| | A) | ductus deferens |
| | B) | ejaculatory duct |
| | C) | testicular artery |
| | D) | testicular venous plexus |
| | E) | cremaster muscle |
|
|
16 | |
The passageway through which the spermatic cord traverses to enter the pelvic cavity is called the (708) |
| | A) | testicular fossa |
| | B) | inguinal canal |
| | C) | femoral ring |
| | D) | pelvic canal |
| | E) | gubernaculum |
|
|
17 | |
Which of the following is the correct sequence of the paired-duct system for passage of spermatozoa during emission? (707) |
| | A) | epididymides, ductus deferentia, and ejaculatory ducts |
| | B) | epididymides, ejaculatory ducts, and ductus deferentia |
| | C) | ductus deferentia, epididymides, and ejaculatory ducts |
| | D) | ductus deferentia, ejaculatory ducts, and epididymides |
|
|
18 | |
Which of the following organs is not an accessory gland of the male reproductive system? (708) |
| | A) | prostate |
| | B) | seminal vesicle |
| | C) | glans penis |
| | D) | bulbourethral gland |
|
|
19 | |
Semen is a mixture of fluids from the (708) |
| | A) | seminal vesicles and the prostate |
| | B) | bulbourethral gland and the prostate |
| | C) | accessory glands and the glans penis |
| | D) | ejaculatory ducts and the prostate |
|
|
20 | |
Which of the following relationships between structure and location is incorrect? (708) |
| | A) | The seminal vesicle is posterior to and at the base of the urinary bladder. |
| | B) | The ejaculatory duct is located at the base (crus) of the penis. |
| | C) | The prostate is below the urinary bladder and surrounds the beginning portion of the urethra. |
| | D) | The bulbourethral gland is inferior to the prostate. |
| | E) | None of the above |
|
|
21 | |
Which of the following is a function of the urethral glands? (709) |
| | A) | secretion of mucus |
| | B) | secretion of fructose |
| | C) | secretion of hormones |
| | D) | regulation of spermatogenesis |
| | E) | regulation of the pH of semen |
|
|
22 | |
The bulb and crus of the penis are located within the (710) |
| | A) | glans |
| | B) | corona glandis |
| | C) | body |
| | D) | prepuce |
| | E) | root |
|
|
23 | |
Which of the following statements concerning the penis is false? (710) |
| | A) | It is attached proximally to the pubic arch. |
| | B) | It contains two columns of erectile tissue. |
| | C) | Its skin is loosely attached and retractable over the glans penis. |
| | D) | Its root contains the bulbospongiosus muscle. |
| | E) | It is positioned in the urogenital triangle of the perineum. |
|
|
24 | |
Which of the following relationships between structure and location is incorrect? (711) |
| | A) | The prepuce is a retractable sheath of skin covering the glans penis. |
| | B) | The external urinary meatus is at the tip of the glans penis. |
| | C) | The septum penis separates the two columns of corpora spongiosum. |
| | D) | The crus and bulb of the penis are located proximally within the root. |
|
|
25 | |
Erection of the penis (712) |
| | A) | occurs only when a man is sexually aroused |
| | B) | is under hormonal control |
| | C) | is necessary for ejaculation to occur |
| | D) | is a parasympathetic response |
| | E) | both c and d |
|
|
26 | |
Erection is neurologically controlled by the (712) |
| | A) | hypothalamus and sacral portion of the spinal cord |
| | B) | cerebrum and hypothalamus |
| | C) | genital sensory receptors and cerebrum |
| | D) | vagus and sacral nerves |
|
|
27 | |
A normal ejaculate contains (714) |
| | A) | 10 million spermatozoa per milliliter |
| | B) | 60-150 million spermatozoa per milliliter |
| | C) | 250-400 million spermatozoa per milliliter |
| | D) | 500 million spermatozoa per milliliter |
|
|
28 | |
The sexual identity of a fetus is determined at (716) |
| | A) | birth |
| | B) | 10 weeks |
| | C) | the second trimester |
| | D) | conception |
| | E) | 8 weeks |
|
|
29 | |
Male external genitalia develop due to the presence of (716) |
| | A) | gametes |
| | B) | androgens |
| | C) | a prostate |
| | D) | the phallus |
| | E) | seminal vesicles |
|
|
30 | |
The first sign of gonadal development is the appearance of a (716) |
| | A) | Y chromosome |
| | B) | primary sex cord |
| | C) | gonadal ridge |
| | D) | genital tubercle |
| | E) | gubernaculum |
|
|
31 | |
All of the following arise from the embryonic mesonephric duct except the (716) |
| | A) | epididymis |
| | B) | ductus deferens |
| | C) | seminal vesicle |
| | D) | prostate |
|
|
32 | |
Sexual distinction of the external genitalia becomes apparent by the end of the (716) |
| | A) | embryonic period |
| | B) | sixth week |
| | C) | seventh week |
| | D) | ninth week |
| | E) | twelfth week |
|
|
33 | |
The scrotum forms from the (716) |
| | A) | primary sex cords |
| | B) | genital tubercle |
| | C) | gubernaculum |
| | D) | labioscrotal swellings |
| | E) | urogenital sinus |
|
|
34 | |
A person who has a 46 XY chromosome constitution and male gonads but intersexual and undifferentiated genitalia has the condition of (714) |
| | A) | pseudohermaphroditism |
| | B) | cryptorchidism |
| | C) | Klinefelter's syndrome |
| | D) | varicocele |
| | E) | Turner' s syndrome |
|
|
35 | |
A person with Klinefelter's syndrome has (715) |
| | A) | genotype XO |
| | B) | 45 chromosomes |
| | C) | an extra Y chromosome |
| | D) | an XXY chromosome constitution |
| | E) | none of the above |
|
|
36 | |
The incomplete descent of a testis is known as (720) |
| | A) | impotence |
| | B) | sterility |
| | C) | orchitis |
| | D) | varicocele |
| | E) | cryptorchidism |
|
|
37 | |
In which of the following conditions would the male produce viable spermatozoa? (715) |
| | A) | true hermaphroditism |
| | B) | pseudohermaphroditism |
| | C) | cryptorchidism |
| | D) | Turner's syndrome |
| | E) | Klinefelter's syndrome |
|
|
38 | |
Which of the following is not a cause of infertility? (715) |
| | A) | vasectomy |
| | B) | varicocele |
| | C) | alcoholism |
| | D) | impotence |
| | E) | excessive heat |
|
|
39 | |
Ligation (tying) of the ductus deferentia interferes directly with (720) |
| | A) | ejaculation |
| | B) | testosterone secretion |
| | C) | fertility |
| | D) | erection capability |
| | E) | all of the above |
|
2002 McGraw-Hill Higher Education