Chp.27-Male Reproductive System Homework

Which of the following is an androgen?

Correctly label the following parts of the male reproductive system.

The countercurrent heat exchanger that prevents arterial blood from overheating the testes is the __________.

Changes called male climacteric are a consequence of a(n) __________.

Which of the following are not found in or around the seminiferous tubules?

Place the cell images into the correct order on the picture to outline the sequence of events associated with spermatogenesis.

Correctly label the following parts of the testis.

Which of the following hormones directly stimulates the development of male secondary sex characteristics?

Male infertility (sterility) refers to _________.

Which of the following is not a change in the male body that results from puberty?

The __________ is the site of sperm maturation and storage.

Nurse cells secrete inhibin, which regulates the rate of sperm production.

Which of the following is generally accepted as a secondary sex characteristic?

__________ have 46 chromosomes, whereas __________ have 23.

By volume, most of the semen is produced in the __________.

In meiosis, each parent cell produces __________.

Whether an organism will be genetically male or female is determined by __________.

Correctly label the structures of the scrotum.

The __________ has/have no androgen receptors and do/does not respond to it.

Heart rate, blood pressure, and respiratory rate peak during the __________.

At the end of meiosis I there are __________, whereas at the end of meiosis II there is/are __________.

A sperm count any lower than __________ million sperm per mL of semen is usually associated with infertility (sterility).

Correctly label the following parts of a mature sperm.

Which of the following is the correct pathway of sperm cells from their formation to ejaculation?

The haploid (n) result of meiosis I is called a __________.

Correctly label the structures of the spermatic cord.

Correctly label the following structures of the penis.

When do the testes start secreting testosterone?

The orgasm-emission phase of the male sexual response is stimulated by __________.

Correctly label the following parts of the male reproductive system.

Which of the following does not play a role in thermoregulation of the testes?

Sildenafil (Viagra) prolongs erection by __________.

In the process of spermiogenesis, __________ become __________.

Which of the following is the most important role of meiosis in sexual reproduction?

Which of the following is inhibited by testosterone?

Which of the following explains the neural mechanism of an erection?

Spermiogenesis is the last stage of meiosis.

At what stage does a developing sperm cell begin to grow a tail?

Click and drag each label to identify whether it describes meiosis, mitosis, or both.

__________ stimulates the interstitial cells of the testes to secrete __________.

Which hormone suppresses spermatogenesis without affecting testosterone secretion?

When it is cold, the __________ contracts and draws the testes closer to the body to keep them warm.

Only germ cells undergo meiosis, which produces four haploid (n) cells with 23 chromosomes each.

Which of the following is a secondary sex organ?

Dilation of the __________ causes the lacunae to fill with blood and the penis to become erect.

Which of the following is not a function of the nurse cells?

The penis is homologous to the __________.

Why would an enlarged prostate interfere with urination?

Which of the following is true regarding the blood-testis barrier?

The scrotum contains the testes and spermatic cords.

The presence of the Y chromosome guarantees the development of male secondary sex organs.

Genetic males are XY and genetic females are XX.

Erectile dysfunction prevents ejaculation in most cases.

The penis is innervated by the __________ nerve.

Correctly label the following structures of the penis.

The acrosome contains enzymes used to __________.

The penile urethra is enclosed by the __________.

The first haploid (n) stage of spermatogenesis is prophase II.

Correctly label the following parts of the male reproductive system.

Correctly label the following external genitalia of the developing male and female embryo.

The deep region of the penis, surrounding the urethra, that engorges with blood during an erection is known as the ___________.

Males produce sperm and females produce eggs.

Sperm cells get energy to power their movement from __________, which is contributed by the __________.

Sexual reproduction entails the union of two gonads to form a zygote.

The __________ is the small, bilateral organ found lateral to the membranous urethra.

Correctly label the following external genitalia of the developing male and female embryo.

Men have only one __________.

The process of spermatogenesis and spermiogenesis begins with a __________ and ends with four __________.

Descent of the testes is stimulated by the __________.