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chapter 27
the male reproduction
| Question | Answer |
|---|---|
| Biparental inheritance is achieved when offspring receive genes from which of the following? | both egg and sperm |
| The sex cells, sperm and eggs, are referred to as which of the following? | Gametes |
| The male reproductive structures function to produce ______ cells and introduce them into the vagina. | sperm |
| The primary sex organs of the male are the ______. | testes |
| Within the male reproductive system, a system of ducts, glands, and the penis are considered which of the following? | Secondary sex organs |
| Each individual has genes inherited from which of the following? | Both the male and female parents |
| If an egg is fertilized with a Y-bearing sperm, it produces an XY zygote that is destined to become a ______. | male |
| A single-celled, fertilized egg is called a | zygote |
| Up to a point, a fetus is sexually undifferentiated, as it has both ducts and paramesonephric ducts. | mesonephric |
| Which are functions of the male reproductive system? | To introduce sperm into the female body To produce sperm |
| The term used to describe male and female anatomical structures that derive from the same embryological structures is | homologous |
| Which organs produce gametes? | Primary sex organs |
| True or false: Both male and female gonads initially develop near the kidneys in the fetus. | True |
| In the male, which are considered secondary sex organs? | Penis Glands that contribute to semen Ducts that convey sperm |
| The is a connective tissue cord that extends from the gonad to the floor of the abdominopelvic cavity during development. | gubernaculum |
| If an egg is fertilized with an X-bearing sperm, it produces an XX zygote that is destined to become a ______. | female |
| Which normally pass through the inguinal canals? | Testes |
| The paramesonephric ducts will develop into the ______ reproductive tract. | female |
| The diamond shaped area between the thighs, bordered by the pubic symphysis, ischial tuberosities, and coccyx is the | perineum |
| What does it mean if structures are homologous? | They are derived from the same embryological structure. |
| The pouch of skin, muscle, and fibrous connective tissue that contains the testes is the | scrotum |
| Where do both male and female gonads develop initially? | Near the kidneys |
| The perineal is the external seam where the two halves of the scrotum are fused. | raphe |
| The gubernaculum is a connective tissue cord that extends from the ______ to the ______ of a developing fetus. | gonad, floor of abdomopelvic cavity |
| The ductus deferens, cremaster muscle, pampiniform plexus, and testicular artery are located in the cord. | spermatic |
| Which is true of the inguinal canal? | It is a path through the groin. It contains a fold of peritoneum from the abdominopelvic cavity. The testes pass through it on their way to the scrotum. |
| Maximal sperm production occurs when the testes are at what temperature? | 35 degrees Celsius |
| What is the region between the thighs bordered by the coccyx, pubic symphysis, and ischial tuberosities called? | Perineum |
| Which structure divides the scrotum into right and left compartments? | Median septum |
| In cold temperatures, which muscle contracts and pulls the testes closer to the body to keep them warm? | Cremaster |
| The internal median septum is externally marked by a seam on the scrotum called what? | Perineal raphe |
| A testis is considered an exocrine gland because it produces ______. | sperm |
| The diamond shaped area between the thighs, bordered by the pubic symphysis, ischial tuberosities, and coccyx is the | perineum |
| In the picture of a testis, the arrow is indicating a ----- tubule | seminiferous |
| In warm temperatures, the cremaster muscle ______ and the testes are suspended farther from the body. | relaxes |
| Which structures of some rete cells help to move sperm? | Cilia |
| A testis is considered an exocrine gland because it produces ______. | sperm |
| Blood leaves the testis by way of the ______, which converges to form the testicular vein. | pampiniform plexus |
| What do interstitial cells produce? | Testosterone |
| The ______ are the site of sperm production. | seminiferous tubules |
| Which network within the testes receives sperm directly from the seminiferous tubules? | Rete testis |
| The end of the ductus deferens widens into which of the following before merging with the duct of the seminal vesicle? | Ampulla |
| Blood leaves the testis by way of the pampiniform plexus of veins which converge to form the vein. | testicular |
| What are the three regions of the male urethra? | Spongy Prostatic Membranous |
| What are four functions of sustentacular cells? | To protect germ cells To provide nutrients to germ cells To promote germ cell development To provide growth factors to germ cells |
| The male erectile organ that serves to deposit semen in the vagina is the | penis |
| What is a creamy secretion sometimes found accumulated beneath the prepuce called? | Smegma |
| Which duct carries sperm from the epididymis to the ejaculatory duct? | Ductus deferens |
| What is the erectile column of the penis that passes along the ventral side and encloses the penile urethra? | Corpus spongiosum |
| From proximal to distal, the three regions of the male urethra are the prostatic, , and the spongy urethra. | membranous |
| A tissue that functions by swelling with blood is known as a(n) tissue. | erectile |
| The two ______ lie posterior to the bladder and produce a yellowish secretion that makes up about 60% of the semen. | seminal vesicles |
| What is the time period from the onset of gonadotropin secretion and reproductive development until a person attains full adult height called? | Adolescence |
| The penis serves to deposit in the vagina. | semen |
| The binding of which hormone by androgen-binding proteins leads to the onset of spermatogenesis? | Testosterone |
| The foreskin of the penis is also known as the | prepuce |
| ______ stimulates the interstitial cells of the testes to secrete androgens, mainly testosterone. | Luteinizing hormone (LH) |
| The erectile tissue surrounding the urethra and filling the entire glans is the corpus | spongiosum |
Created by:
ccarterreid1